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Karthick P.K on SQL Server

How to Analyze Deadlocked Schedulers Dumps?

Posted by Karthick P.K on June 15, 2010

How to Analyze "Deadlocked Schedulers" Dumps?

Do you see "Deadlocked Schedulers" errors similar to one below and stuck?

From SQL Server Errorlog

**Dump thread – spid = 0, PSS = 0x0000000000000000, EC = 0x0000000000000000

***Stack Dump being sent to C:\Program Files\Microsoft SQL Server\MSSQL.1\MSSQL\LOG\SQLDump0001.txt

* BEGIN STACK DUMP:

* Deadlocked Schedulers

* Short Stack Dump

Stack Signature for the dump is 0x00000000000003D0

New queries assigned to process on Node 0 have not been picked  up by a worker thread in the last 60 seconds. Blocking or long-running queries can contribute to this condition, and may degrade client response time.  Use the "max worker threads" configuration option to increase number  of allowable threads, or optimize current running queries.  SQL Process Utilization: 0%. System Idle: 69%.

New queries assigned to process on Node 3 have not been picked up by a worker thread in the last 300 seconds. Blocking or long-running queries can contribute to this condition, and may degrade client response time. Use the "max worker threads" configuration option to increase number of allowable threads, or optimize current running queries. SQL Process Utilization: 6%. System Idle: 90%.

Cause

We get Deadlocked Schedulers error (New queries assigned to process on Node n have not been picked up by a worker thread in the last 300 seconds) and dump when Scheduler Monitor detects threads(workers) are not Progressing on schedulers of one (or) all nodes for 60 seconds (300 seconds in Denali) and there are new work request (tasks) but there is no idle threads to pick up the the work request and SQL Server could not spawn new thread to process the new work request (Max worker threads reached).

Some of common causes are most of the tasks are waiting on a single resource because of resource bottleneck, excessive blocking, excessive parallelism, very long running Queries executed by all workers, all threads waiting on trace write waits etc..

SQL Server will not accept new connections or cannot process new requests  when there is deadlocked scheduler condition (Exception: deadlocked condition on single node). 

Note: In systems with multiple nodes (NUMA)  If all the threads which belong to schedulers of single node is exhausted (or) Schedulers not progressing on single node can cause deadlocked scheduler condition.

Detailed explanation about dead lock schedulers can be found in This blog from my mentor J.P

Steps to analyze "Deadlocked Schedulers" Dumps.

To analyze the dump download and Install Windows Debugger from This  link

Step 1:

Open Windbg .  Choose File menu –> select Open crash dump –>Select the Dump file (SQLDump000#.mdmp)

Step 2:

on command window type
.sympath srv*c:\Websymbols*http://msdl.microsoft.com/download/symbols;

Step 3:

Type .reload /f and hit enter. This will force debugger to immediately load all the symbols.

Step 4:

Verify if symbols are loaded for  SQL Server by using the debugger command lmvm

0:002> lmvm sqlservr
start             end                 module name
00000000`01000000 00000000`03679000   sqlservr T (pdb symbols)          c:\websymbols\sqlservr.pdb\21E4AC6E96294A529C9D99826B5A7C032\sqlservr.pdb
    Loaded symbol image file: sqlservr.exe
    Image path: C:\Program Files\Microsoft SQL Server\MSSQL.1\MSSQL\Binn\sqlservr.exe
    Image name: sqlservr.exe
    Timestamp:        Wed Oct 07 21:15:52 2009 (4ACD6778)
    CheckSum:         025FEB5E
    ImageSize:        02679000
    File version:     2005.90.4266.0
    Product version:  9.0.4266.0
    File flags:       0 (Mask 3F)
    File OS:          40000 NT Base
    File type:        1.0 App
    File date:        00000000.00000000
    Translations:     0000.04b0 0000.04e4 0409.04b0 0409.04e4

Step 5:

Type  ~*kL 20   and look at the stack of all the threads  to find what majority of threads are doing.

Note: If you find most of your threads are waiting on stack which is not listed below please paste the stack in comments session of this blog (or) In MSSQLWIKI  face book group we will try to answer you. If you don’t get prompt reply from the community, you may need to open a support ticket with Microsoft.

1. If it is blocking issue and If most of the threads are  waiting to acquire a lock you will find the most of the stack similar to one below. (We try to acquire lock and go to wait, since someone is holding a lock)

ntdll!ZwSignalAndWaitForSingleObject

kernel32!SignalObjectAndWait

sqlservr!SOS_Scheduler::SwitchContext

sqlservr!SOS_Scheduler::Suspend

sqlservr!SOS_Event::Wait

sqlservr!LockOwner::Sleep

sqlservr!lck_lockInternal

sqlservr!GetLock

2. If most of threads are stuck while trying to write profiler events to the destination you might find stack similar to one below

ntdll!ZwSignalAndWaitForSingleObject

kernel32!SignalObjectAndWait

sqlservr!SOS_Scheduler::SwitchContext

sqlservr!SOS_Task::Sleep

sqlservr!CTraceRowsetIoProvider::GetFreeBuffers

sqlservr!CTraceWriteRequest::InitForRowsetTrace

sqlservr!CTraceRowsetIoProvider::InitializeWriteRequest

sqlservr!CTrace::WriteRecord

sqlservr!CTraceController::ProduceRecord

sqlservr!CTraceData::TracePreBatchEvent

sqlservr!CSQLSource::Execute

sqlservr!process_request

sqlservr!process_commands

sqlservr!SOS_Task::Param::Execute

sqlservr!SOS_Scheduler::RunTask

sqlservr!SOS_Scheduler::ProcessTasks

3. If your stack’s  are like one below refer http://support.microsoft.com/default.aspx?scid=kb;EN-US;974205

sqlservr!SpinlockBase::Sleep
sqlservr!SpinlockBase::SpinToAcquire
sqlservr!TSyncHashTable_EntryAccessorsqlservr!CQSIndexStatsMgr::AddNewMissingIndex
sqlservr!CIdxSuggestion::Register
sqlservr!COptExpr::PqteConvert
sqlservr!CPhyOp_Top::PqteConvert
sqlservr!COptExpr::PqteConvert
sqlservr!COptExpr::PqteConvertTree
sqlservr!COptContext::PcxteOptimizeQuery
sqlservr!CQuery::Optimize
sqlservr!CQuery::PqoBuild
sqlservr!CStmtQuery::InitQuery
sqlservr!CStmtSelect::Init

4. If you see many stacks like the one below it could be BPOOL memory pressure (or) Lazy writer  waiting on I/O

sqlservr!BPool::Steal

sqlservr!SQLSinglePageAllocator::AllocatePages

sqlservr!MemoryNode::AllocatePagesInternal

sqlservr!MemoryClerkInternal::AllocatePages

sqlservr!IMemObj::PbGetNewPages

sqlservr!CSlotPageMgr::PbAllocate

5. If you see many stacks like the one below it should be because of excessive parallelism

sqlservr!CQScanXProducerNew::Open

sqlservr!FnProducerOpen

sqlservr!FnProducerThread

sqlservr!SubprocEntrypoint

6. If you see many stacks like the one below (Many threads waiting to flush log) it should be because of disk bottleneck’s. Check if you see "I/O requests taking longer than 15 seconds" messages in Errorlog before Deadlocked Schedulers Dumps. Refer Troubleshooting sql server I/O for troubleshooting I/O issues.

sqlservr!SOS_Event::Wait

sqlservr!SQLServerLogMgr::WaitLCFlush

sqlservr!SQLServerLogMgr::LogFlush

sqlservr!SQLServerLogMgr::WaitLogFlush

sqlservr!XdesRMFull::Commit

 

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Thank you,

Karthick P.K |My Facebook Page |My Site| Blog space| Twitter

Disclaimer

The views expressed on this website/blog are mine alone and do not reflect the views of my company. All postings on this blog are provided “AS IS” with no warranties, and confers no rights.

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65 Responses to “How to Analyze Deadlocked Schedulers Dumps?”

  1. [...] Here are some examples of stacks that you will observe if you were to examine a memory dump (details on how to do so using public symbols can be found here) [...]

  2. [...] Newer version of this post is available in http://mssqlwiki.com/2010/06/15/how-to-analyze-deadlocked-schedulers-dumps/ [...]

  3. Xanax said

    Hello, just wanted to tell you, I liked this post.
    It was funny. Keep on posting!

  4. [...] How to Analyze "Deadlocked Schedulers" Dumps [...]

  5. Nathan said

    So general question on this thread. I wanted to review a dump file from a server issue last night. So I download WinDBG to my local PC, install it, copy the file from my production server, and then start following the steps listed above. Following along exactly as above, I get the following:

    Loading Dump File [C:\Users\nathan.heaivilin\Desktop\DB9 Issue\SQLDump0074.mdmp]
    User Mini Dump File: Only registers, stack and portions of memory are available

    Comment: ‘Stack Trace’
    Comment: ‘Deadlocked Schedulers’
    Symbol search path is: *** Invalid ***
    ****************************************************************************
    * Symbol loading may be unreliable without a symbol search path. *
    * Use .symfix to have the debugger choose a symbol path. *
    * After setting your symbol path, use .reload to refresh symbol locations. *
    ****************************************************************************
    Executable search path is:
    Windows Server 2003 Version 3790 (Service Pack 2) MP (8 procs) Free x64
    Product: Server, suite: Enterprise TerminalServer SingleUserTS
    Machine Name:
    Debug session time: Thu Apr 4 04:50:50.000 2013 (UTC – 4:00)
    System Uptime: not available
    Process Uptime: 150 days 21:23:41.000
    ……………………………………………………….
    ……………………………………………
    Loading unloaded module list
    …………….
    This dump file has an exception of interest stored in it.
    The stored exception information can be accessed via .ecxr.
    (23fc.2358): Unknown exception – code 00000000 (first/second chance not available)
    Unable to load image C:\WINDOWS\system32\ntdll.dll, Win32 error 0n2
    *** WARNING: Unable to verify timestamp for ntdll.dll
    *** ERROR: Module load completed but symbols could not be loaded for ntdll.dll
    ntdll+0x302ea:
    00000000`77ef02ea c3 ret
    0:004> .sympath srv*c:\Websymbols*http://msdl.microsoft.com/download/symbols;
    Symbol search path is: srv*c:\Websymbols*http://msdl.microsoft.com/download/symbols
    Expanded Symbol search path is: srv*c:\websymbols*http://msdl.microsoft.com/download/symbols
    0:004> .reload /f
    .Unable to load image C:\Program Files\Microsoft SQL Server\MSSQL.1\MSSQL\Binn\sqlservr.exe, Win32 error 0n2
    *** WARNING: Unable to verify timestamp for sqlservr.exe
    ………..

    Press ctrl-c (cdb, kd, ntsd) or ctrl-break (windbg) to abort symbol loads that take too long.
    Run !sym noisy before .reload to track down problems loading symbols.

    …….Unable to load image C:\Program Files\Microsoft SQL Server\90\Shared\instapi.dll, Win32 error 0n2
    *** WARNING: Unable to verify timestamp for instapi.dll
    *** ERROR: Module load completed but symbols could not be loaded for instapi.dll
    .*** ERROR: Module load completed but symbols could not be loaded for sqlevn70.rll
    ………Unable to load image C:\WINDOWS\system32\iphlpapi.dll, Win32 error 0n2
    *** WARNING: Unable to verify timestamp for iphlpapi.dll
    *** ERROR: Module load completed but symbols could not be loaded for iphlpapi.dll
    ..Unable to load image C:\WINDOWS\system32\msasn1.dll, Win32 error 0n2
    *** WARNING: Unable to verify timestamp for msasn1.dll
    ……………….Unable to load image C:\Program Files\Microsoft SQL Server\MSSQL.1\MSSQL\Binn\msfte.dll, Win32 error 0n2
    *** WARNING: Unable to verify timestamp for msfte.dll
    *** ERROR: Module load completed but symbols could not be loaded for msfte.dll
    .Unable to load image C:\Program Files\Microsoft SQL Server\90\Shared\dbghelp.dll, Win32 error 0n2
    *** WARNING: Unable to verify timestamp for dbghelp.dll
    .Unable to load image C:\WINDOWS\system32\wintrust.dll, Win32 error 0n2
    *** WARNING: Unable to verify timestamp for wintrust.dll
    ……..Unable to load image C:\WINDOWS\system32\xpsp2res.dll, Win32 error 0n2
    *** WARNING: Unable to verify timestamp for xpsp2res.dll
    ….
    .Unable to load image C:\WINDOWS\system32\shlwapi.dll, Win32 error 0n2
    *** WARNING: Unable to verify timestamp for shlwapi.dll
    …*** ERROR: Module load completed but symbols could not be loaded for sqlnclir.rll
    .Unable to load image C:\Program Files\Microsoft SQL Server\MSSQL.1\MSSQL\Binn\msftepxy.dll, Win32 error 0n2
    *** WARNING: Unable to verify timestamp for msftepxy.dll
    *** ERROR: Module load completed but symbols could not be loaded for msftepxy.dll
    ……Unable to load image C:\WINDOWS\WinSxS\amd64_Microsoft.VC80.ATL_1fc8b3b9a1e18e3b_8.0.50727.42_x-ww_A08A3E21\ATL80.dll, Win32 error 0n2
    *** WARNING: Unable to verify timestamp for ATL80.dll
    .Unable to load image C:\WINDOWS\system32\odbcint.dll, Win32 error 0n2
    *** WARNING: Unable to verify timestamp for odbcint.dll
    *** ERROR: Module load completed but symbols could not be loaded for odbcint.dll
    .*** ERROR: Module load completed but symbols could not be loaded for XPStar90.RLL
    ..*** ERROR: Module load completed but symbols could not be loaded for xplog70.rll
    ………Unable to load image C:\WINDOWS\assembly\NativeImages_v2.0.50727_64\mscorlibf50472cb7463465ca2c77c05167f5d8\mscorlib.ni.dll, Win32 error 0n2
    *** WARNING: Unable to verify checksum for mscorlib.ni.dll
    ….Unable to load image C:\Program Files\Microsoft SQL Server\MSSQL.1\MSSQL\Binn\SqlAccess.dll, Win32 error 0n2
    …Unable to load image C:\WINDOWS\assembly\NativeImages_v2.0.50727_64\System\8965cd2ac127761b5ff62be938cbcf0c\System.ni.dll, Win32 error 0n2
    *** WARNING: Unable to verify checksum for System.ni.dll
    ..Unable to load image C:\WINDOWS\assembly\NativeImages_v2.0.50727_64\System.Security\787d03a0028b5d45a70839dd6769a0d5\System.Security.ni.dll, Win32 error 0n2
    *** WARNING: Unable to verify checksum for System.Security.ni.dll
    ..Unable to load image C:\WINDOWS\assembly\GAC_MSIL\System.Security\2.0.0.0__b03f5f7f11d50a3a\System.Security.dll, Win32 error 0n2
    .Unable to load image C:\WINDOWS\assembly\GAC_MSIL\System.Xml\2.0.0.0__b77a5c561934e089\System.Xml.dll, Win32 error 0n2
    .Unable to load image C:\Program Files\Microsoft SQL Server\MSSQL.1\MSSQL\Binn\xpSLS.dll, Win32 error 0n2
    *** WARNING: Unable to verify timestamp for xpSLS.dll
    *** ERROR: Module load completed but symbols could not be loaded for xpSLS.dll
    .Unable to load image C:\Program Files\Microsoft SQL Server\80\COM\sqlvdi.dll, Win32 error 0n2
    *** WARNING: Unable to verify timestamp for sqlvdi.dll
    ………….
    Loading unloaded module list
    …………….
    0:004> lmvm sqlserver
    start end module name

    Any thoughts on what I am doing wrong here:
    My local PC is a Windows 7 64 bit install
    Production server is a Windows Server 2003 64 bit install
    SQL Server 2005 SP4 version

    Thanks,

    Nathan

  6. Nathan said

    Karthick, thank you very much for the note. I was able to get that corrected. When redoing everything here is what I get.

    0:004> .reload /f
    .Unable to load image C:\Program Files\Microsoft SQL Server\MSSQL.1\MSSQL\Binn\sqlservr.exe, Win32 error 0n2
    *** WARNING: Unable to verify timestamp for sqlservr.exe
    ………………*** ERROR: Symbol file could not be found. Defaulted to export symbols for instapi.dll –
    .*** ERROR: Module load completed but symbols could not be loaded for sqlevn70.rll
    …….

    Press ctrl-c (cdb, kd, ntsd) or ctrl-break (windbg) to abort symbol loads that take too long.
    Run !sym noisy before .reload to track down problems loading symbols.

    ..*** ERROR: Symbol file could not be found. Defaulted to export symbols for iphlpapi.dll –
    …………………*** ERROR: Symbol file could not be found. Defaulted to export symbols for msfte.dll –
    …………..
    ….*** ERROR: Module load completed but symbols could not be loaded for sqlnclir.rll
    .*** ERROR: Symbol file could not be found. Defaulted to export symbols for msftepxy.dll –
    …….*** ERROR: Module load completed but symbols could not be loaded for odbcint.dll
    .*** ERROR: Module load completed but symbols could not be loaded for XPStar90.RLL
    ..*** ERROR: Module load completed but symbols could not be loaded for xplog70.rll
    ………Unable to load image C:\WINDOWS\assembly\NativeImages_v2.0.50727_64\mscorlibf50472cb7463465ca2c77c05167f5d8\mscorlib.ni.dll, Win32 error 0n2
    *** WARNING: Unable to verify checksum for mscorlib.ni.dll
    ….Unable to load image C:\Program Files\Microsoft SQL Server\MSSQL.1\MSSQL\Binn\SqlAccess.dll, Win32 error 0n2
    …Unable to load image C:\WINDOWS\assembly\NativeImages_v2.0.50727_64\System\8965cd2ac127761b5ff62be938cbcf0c\System.ni.dll, Win32 error 0n2
    *** WARNING: Unable to verify checksum for System.ni.dll
    ..Unable to load image C:\WINDOWS\assembly\NativeImages_v2.0.50727_64\System.Security\787d03a0028b5d45a70839dd6769a0d5\System.Security.ni.dll, Win32 error 0n2
    *** WARNING: Unable to verify checksum for System.Security.ni.dll
    ….Unable to load image C:\Program Files\Microsoft SQL Server\MSSQL.1\MSSQL\Binn\xpSLS.dll, Win32 error 0n2
    *** WARNING: Unable to verify timestamp for xpSLS.dll
    *** ERROR: Module load completed but symbols could not be loaded for xpSLS.dll
    …………..
    Loading unloaded module list
    …………….
    0:004> lmvm sqlservr
    start end module name
    00000000`01000000 00000000`0365d000 sqlservr T (pdb symbols) c:\websymbols\sqlservr.pdb\782EB41025744E27AB6DF074E02955B22\sqlservr.pdb
    Loaded symbol image file: sqlservr.exe
    Image path: C:\Program Files\Microsoft SQL Server\MSSQL.1\MSSQL\Binn\sqlservr.exe
    Image name: sqlservr.exe
    Timestamp: Fri Mar 25 20:49:34 2011 (4D8D381E)
    CheckSum: 025DF77F
    ImageSize: 0265D000
    File version: 2005.90.5057.0
    Product version: 9.0.5057.0
    File flags: 0 (Mask 3F)
    File OS: 40000 NT Base
    File type: 1.0 App
    File date: 00000000.00000000
    Translations: 0000.04b0 0000.04e4 0409.04b0 0409.04e4

    So to me, everything is working as expected. However, when I run your ~*lK 20 command above, I get a ton of data, nothing of which had any of the items in red above.

    Also, when running an !analze -v, I get the following.

    0:004> !analyze -v
    *******************************************************************************
    * *
    * Exception Analysis *
    * *
    *******************************************************************************

    FAULTING_IP:
    sqlservr!stackTrace+101
    00000000`01f75c61 50 push rax

    EXCEPTION_RECORD: ffffffffffffffff — (.exr 0xffffffffffffffff)
    ExceptionAddress: 0000000001f75c61 (sqlservr!stackTrace+0x0000000000000101)
    ExceptionCode: 00000000
    ExceptionFlags: 00000000
    NumberParameters: 0

    DEFAULT_BUCKET_ID: WRONG_SYMBOLS

    PROCESS_NAME: sqlservr.exe

    MOD_LIST:

    NTGLOBALFLAG: 0

    MANAGED_STACK: !dumpstack -EE
    OS Thread Id: 0x2358 (4)
    Child-SP RetAddr Call Site

    LAST_CONTROL_TRANSFER: from 0000000077d704ff to 0000000077ef02ea

    FAULTING_THREAD: ffffffffffffffff

    PRIMARY_PROBLEM_CLASS: WRONG_SYMBOLS

    BUGCHECK_STR: APPLICATION_FAULT_WRONG_SYMBOLS

    STACK_TEXT:
    00000000`05ebdea8 00000000`77d704ff : 00000000`05ebe3e0 00000000`032e3ab0 00000000`0327fd28 00000000`05ebe2e0 : ntdll!ZwWaitForSingleObject+0xa
    00000000`05ebdeb0 00000000`018cadd3 : 00000000`00000f98 00000000`00000000 00000000`00000000 00000000`00000000 : kernel32!WaitForSingleObjectEx+0x130
    00000000`05ebdf50 00000000`018ca7cb : 00000000`0327fd28 00000000`0327fc40 00000000`00004e20 00000000`00000000 : sqlservr!CDmpDump::DumpInternal+0x4a3
    00000000`05ebe040 00000000`01f72f93 : 00000000`0327fd28 00000000`03277c48 00000000`00010000 00000000`05ebe3e0 : sqlservr!CDmpDump::Dump+0x3b
    00000000`05ebe090 00000000`01f76247 : 00000000`032e3ab0 00000000`00002358 00000000`00000331 00000000`05ebe3e0 : sqlservr!CImageHelper::DoMiniDump+0x413
    00000000`05ebe1f0 00000000`02764ff3 : 00000000`00000000 00000000`01c259d9 00000000`00000000 00000000`000004a0 : sqlservr!stackTrace+0x6e7
    00000000`05ebf720 00000000`01d4f300 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`05aa8080 : sqlservr!SQL_SOSDeadlockSchedulersCallback+0xa3
    00000000`05ebf7a0 00000000`01b01986 : 00000000`00ba8088 00000000`00000001 00000000`00000001 00000000`00000000 : sqlservr!SOS_OS::ExecuteDeadlockSchedulerCallbacks+0x50
    00000000`05ebf800 00000000`016b5cc7 : 00000000`206ab323 00000000`00000001 00000000`00ba9ae0 00000000`00000001 : sqlservr!alloca_probe+0x229d66
    00000000`05ebf9a0 00000000`02b50c29 : 00000000`00ba9ae0 00000000`00000008 00000000`00000102 00000000`00000008 : sqlservr!SchedulerMonitor::Run+0x107
    00000000`05ebfac0 00000000`0161ab6e : 00000000`00000001 00000000`00000000 00000000`8007a1c0 00000000`017ec7eb : sqlservr!SchedulerMonitor::EntryPoint+0x9
    00000000`05ebfaf0 00000000`0161aec9 : 00000000`00000000 00000000`05aa8080 00000000`05aa4478 00000000`05aa8080 : sqlservr!SOS_Task::Param::Execute+0xee
    00000000`05ebfc00 00000000`01611a94 : 00000000`05aa4478 00000000`00000000 ffffffff`fffffffe 00000000`05cb61c0 : sqlservr!SOS_Scheduler::RunTask+0xc9
    00000000`05ebfc90 00000000`0179c057 : 00000000`05cb61c0 00000000`00ba8270 000007ff`fffad498 00000000`05aa8080 : sqlservr!SOS_Scheduler::ProcessTasks+0xb4
    00000000`05ebfd00 00000000`014c6729 : 00000000`05cb61c0 00000000`05aa8080 0000170a`00000001 00000000`05ebfe18 : sqlservr!SchedulerManager::WorkerEntryPoint+0xe7
    00000000`05ebfda0 00000000`017a1dc0 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`05ebfdc0 : sqlservr!SystemThread::RunWorker+0x59
    00000000`05ebfde0 00000000`017ebdd8 : 00000000`00000000 00000000`00000000 00000000`0026f7d0 00000000`00000000 : sqlservr!SystemThreadDispatcher::ProcessWorker+0x130
    00000000`05ebfe80 00000000`781337d7 : 000007ff`fffad498 00000000`005732f0 00000000`005732f0 00000000`005f0120 : sqlservr!SchedulerManager::ThreadEntryPoint+0x128
    00000000`05ebff20 00000000`78133894 : 00000000`781e95c0 00000000`005732f0 00000000`00000000 00000000`00000000 : msvcr80!endthreadex+0x47
    00000000`05ebff50 00000000`77d6b71a : 00000000`77d6b6e0 00000000`00000000 00000000`00000000 00000000`05ebffa8 : msvcr80!endthreadex+0x104
    00000000`05ebff80 00000000`00000000 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : kernel32!BaseThreadStart+0x3a

    STACK_COMMAND: kb

    FOLLOWUP_IP:
    sqlservr!stackTrace+101
    00000000`01f75c61 50 push rax

    SYMBOL_STACK_INDEX: 0

    SYMBOL_NAME: sqlservr!stackTrace+101

    FOLLOWUP_NAME: MachineOwner

    MODULE_NAME: sqlservr

    IMAGE_NAME: sqlservr.exe

    DEBUG_FLR_IMAGE_TIMESTAMP: 4d8d381e

    FAILURE_BUCKET_ID: WRONG_SYMBOLS_0_sqlservr.exe!stackTrace

    BUCKET_ID: X64_APPLICATION_FAULT_WRONG_SYMBOLS_sqlservr!stackTrace+101

    WATSON_STAGEONE_URL: http://watson.microsoft.com/StageOne/sqlservr_exe/2005_90_5057_0/4d8d381e/sqlservr_exe/2005_90_5057_0/4d8d381e/0/00f75c61.htm?Retriage=1

    Followup: MachineOwner
    ———

    Why is it still showing that I have the wrong sysmbols?

    Thanks,

    Nathan

    • Nathan,
      I got the output of ~*kL 20.
      In most of the threads odbc32.dll is trying to acquire critical section. Looks like there is an orphaned critical section and other threads are waiting for that critical section to be released.

      ntdll!ZwWaitForSingleObject+0xa
      ntdll!RtlpWaitOnCriticalSection+0x240
      ntdll!RtlEnterCriticalSection+0xa9
      odbc32!CObjectPool::GetObjectFromPool+0xae
      odbc32!MPInitializeCriticalSection+0x1b
      odbc32!AllocEnv+0x11d
      odbc32!SQLAllocHandle+0x190
      sqlscm90!EnumServer+0x52
      sqlscm90!IsSQLSvrClustered+0x98
      sqlscm90!SQLSCMGetServiceStateNT+0x42d
      sqlscm90!SQLSCMGetServiceStateW+0xb1

      Apply the hotfix mentioned in http://support.microsoft.com/kb/940046 It should resolve the issue. If issue reoccurs after applying the patch please let me know.

  7. Nathan,
    !analyze -v is only for exception dumps. We need output of ~*kL 20 as you mentioned output will be large so copy the the out put to text file and email me or upload file in our facebook group https://www.facebook.com/groups/454762937884205/

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  37. Oliver Wang said

    Hi Karthick,

    Thanks for your fantastic sharing which is very helpful. Actually I got this exact problem on my box and I used the tool “windbg” to troubleshoot. I did find the keywords “sqlservr!lck_lockInternal” and “sqlservr!SOS_Event::Wait” in the dump file. it seems to be related to lock and IO. However, I still want to know what I can do next to find the real culprit. Could you please give me some advice on that? Thank you very much.

    regards,

    Oliver

    • Hello Oliver,
      so we know it is because of long blocking chain. You should monitor the server for long blocking chain and fix it. If you would like to get the head blocker share the dump with me (If there is no restriction) I can get the head blocker for you form the dump.

      • Oliver Wang said

        Hi Karthick,

        Thanks a lot for your time and efforts. Please see the following dump information:

        Microsoft (R) Windows Debugger Version 6.11.0001.404 X86
        Copyright (c) Microsoft Corporation. All rights reserved.

        Loading Dump File [C:\Users\binwa\Desktop\SQLDump0011.mdmp]
        User Mini Dump File: Only registers, stack and portions of memory are available

        Comment: ‘Stack Trace’
        Comment: ‘Deadlocked Schedulers’
        Symbol search path is: srv*c:\Websymbols*http://msdl.microsoft.com/download/symbols
        Executable search path is:
        Windows Server 2003 Version 3790 (Service Pack 2) MP (4 procs) Free x64
        Product: Server, suite: Enterprise TerminalServer SingleUserTS
        Machine Name:
        Debug session time: Tue Jul 30 12:35:32.000 2013 (GMT+8)
        System Uptime: not available
        Process Uptime: 7 days 19:10:56.000
        ……………………………………………………….
        …………………………
        Loading unloaded module list
        …….
        This dump file has an exception of interest stored in it.
        The stored exception information can be accessed via .ecxr.
        (2064.4b4): Unknown exception – code 00000000 (first/second chance not available)
        ntdll!ZwWaitForSingleObject+0xa:
        00000000`77ef02ea c3 ret
        0:004> .sympath srv*c:\Websymbols*http://msdl.microsoft.com/download/symbols
        Symbol search path is: srv*c:\Websymbols*http://msdl.microsoft.com/download/symbols
        Expanded Symbol search path is: srv*c:\websymbols*http://msdl.microsoft.com/download/symbols
        0:004> .reload /f
        .Unable to load image C:\Program Files\Microsoft SQL Server\MSSQL.3\MSSQL\Binn\sqlservr.exe, Win32 error 0n2
        *** WARNING: Unable to verify timestamp for sqlservr.exe
        …Unable to load image C:\WINDOWS\WinSxS\amd64_Microsoft.VC80.CRT_1fc8b3b9a1e18e3b_8.0.50727.4053_x-ww_18A05F69\msvcr80.dll, Win32 error 0n2
        *** WARNING: Unable to verify timestamp for msvcr80.dll
        ..Unable to load image C:\WINDOWS\WinSxS\amd64_Microsoft.VC80.CRT_1fc8b3b9a1e18e3b_8.0.50727.4053_x-ww_18A05F69\msvcp80.dll, Win32 error 0n2
        *** WARNING: Unable to verify timestamp for msvcp80.dll
        ….Unable to load image C:\Program Files\Microsoft SQL Server\MSSQL.3\MSSQL\Binn\sqlos.dll, Win32 error 0n2
        *** WARNING: Unable to verify timestamp for sqlos.dll
        …..Unable to load image C:\Program Files\Microsoft SQL Server\MSSQL.3\MSSQL\Binn\opends60.dll, Win32 error 0n2
        *** WARNING: Unable to verify timestamp for opends60.dll
        ….*** ERROR: Symbol file could not be found. Defaulted to export symbols for instapi.dll –
        …..Unable to load image C:\Program Files\Microsoft SQL Server\MSSQL.3\MSSQL\Binn\Resources\1033\sqlevn70.rll, Win32 error 0n2
        *** WARNING: Unable to verify timestamp for sqlevn70.rll
        *** ERROR: Module load completed but symbols could not be loaded for sqlevn70.rll

        Press ctrl-c (cdb, kd, ntsd) or ctrl-break (windbg) to abort symbol loads that take too long.
        Run !sym noisy before .reload to track down problems loading symbols.

        ……Unable to load image C:\WINDOWS\system32\mscoree.dll, Win32 error 0n2
        *** WARNING: Unable to verify timestamp for mscoree.dll
        …..Unable to load image C:\WINDOWS\system32\iphlpapi.dll, Win32 error 0n2
        *** WARNING: Unable to verify timestamp for iphlpapi.dll
        *** ERROR: Module load completed but symbols could not be loaded for iphlpapi.dll
        ..Unable to load image C:\WINDOWS\system32\msasn1.dll, Win32 error 0n2
        *** WARNING: Unable to verify timestamp for msasn1.dll
        ……………..Unable to load image C:\Program Files\Microsoft SQL Server\MSSQL.3\MSSQL\Binn\msfte.dll, Win32 error 0n2
        *** WARNING: Unable to verify timestamp for msfte.dll
        *** ERROR: Module load completed but symbols could not be loaded for msfte.dll
        .Unable to load image C:\Program Files\Microsoft SQL Server\90\Shared\dbghelp.dll, Win32 error 0n2
        *** WARNING: Unable to verify timestamp for dbghelp.dll
        …..Unable to load image C:\WINDOWS\system32\xpsp2res.dll, Win32 error 0n2
        *** WARNING: Unable to verify timestamp for xpsp2res.dll
        ..Unable to load image C:\WINDOWS\system32\sqlncli.dll, Win32 error 0n2
        *** WARNING: Unable to verify timestamp for sqlncli.dll
        ..
        .Unable to load image C:\WINDOWS\system32\shlwapi.dll, Win32 error 0n2
        *** WARNING: Unable to verify timestamp for shlwapi.dll
        …Unable to load image C:\WINDOWS\system32\sqlnclir.rll, Win32 error 0n2
        *** WARNING: Unable to verify timestamp for sqlnclir.rll
        *** ERROR: Module load completed but symbols could not be loaded for sqlnclir.rll
        .Unable to load image C:\Program Files\Microsoft SQL Server\MSSQL.3\MSSQL\Binn\msftepxy.dll, Win32 error 0n2
        *** WARNING: Unable to verify timestamp for msftepxy.dll
        *** ERROR: Module load completed but symbols could not be loaded for msftepxy.dll
        .Unable to load image C:\Program Files\Microsoft SQL Server\MSSQL.3\MSSQL\Binn\xpsqlbot.dll, Win32 error 0n2
        *** WARNING: Unable to verify timestamp for xpsqlbot.dll
        .Unable to load image C:\Program Files\Microsoft SQL Server\MSSQL.3\MSSQL\Binn\XPStar90.DLL, Win32 error 0n2
        *** WARNING: Unable to verify timestamp for XPStar90.DLL
        .Unable to load image C:\Program Files\Microsoft SQL Server\MSSQL.3\MSSQL\Binn\sqlscm90.dll, Win32 error 0n2
        *** WARNING: Unable to verify timestamp for sqlscm90.dll
        ..Unable to load image C:\Program Files\Microsoft SQL Server\MSSQL.3\MSSQL\Binn\BatchParser90.dll, Win32 error 0n2
        *** WARNING: Unable to verify timestamp for BatchParser90.dll
        .Unable to load image C:\WINDOWS\WinSxS\amd64_Microsoft.VC80.ATL_1fc8b3b9a1e18e3b_8.0.50727.42_x-ww_A08A3E21\ATL80.dll, Win32 error 0n2
        *** WARNING: Unable to verify timestamp for ATL80.dll
        .Unable to load image C:\WINDOWS\system32\odbcint.dll, Win32 error 0n2
        *** WARNING: Unable to verify timestamp for odbcint.dll
        *** ERROR: Module load completed but symbols could not be loaded for odbcint.dll
        .Unable to load image C:\Program Files\Microsoft SQL Server\MSSQL.3\MSSQL\Binn\Resources\1033\XPStar90.RLL, Win32 error 0n2
        *** WARNING: Unable to verify timestamp for XPStar90.RLL
        *** ERROR: Module load completed but symbols could not be loaded for XPStar90.RLL
        .Unable to load image C:\Program Files\Microsoft SQL Server\MSSQL.3\MSSQL\Binn\xplog70.dll, Win32 error 0n2
        *** WARNING: Unable to verify timestamp for xplog70.dll
        .Unable to load image C:\Program Files\Microsoft SQL Server\MSSQL.3\MSSQL\Binn\Resources\1033\xplog70.rll, Win32 error 0n2
        *** WARNING: Unable to verify timestamp for xplog70.rll
        *** ERROR: Module load completed but symbols could not be loaded for xplog70.rll
        ………Unable to load image D:\Oracle\instantclient_11_2\sqora32.dll, Win32 error 0n2
        *** WARNING: Unable to verify timestamp for sqora32.dll
        *** ERROR: Module load completed but symbols could not be loaded for sqora32.dll
        .Unable to load image D:\Oracle\instantclient_11_2\oci.dll, Win32 error 0n2
        *** WARNING: Unable to verify timestamp for oci.dll
        *** ERROR: Module load completed but symbols could not be loaded for oci.dll
        .Unable to load image D:\Oracle\instantclient_11_2\OraOCIICUS11.dll, Win32 error 0n2
        *** WARNING: Unable to verify timestamp for OraOCIICUS11.dll
        *** ERROR: Module load completed but symbols could not be loaded for OraOCIICUS11.dll
        ..Unable to load image D:\Oracle\INSTANTCLIENT_11_2\sqresus.dll, Win32 error 0n2
        *** WARNING: Unable to verify timestamp for sqresus.dll
        *** ERROR: Module load completed but symbols could not be loaded for sqresus.dll
        ..Unable to load image C:\Program Files\Microsoft SQL Server\80\COM\sqlvdi.dll, Win32 error 0n2
        *** WARNING: Unable to verify timestamp for sqlvdi.dll

        Loading unloaded module list
        …….
        0:004> lmvm sqlservr
        start end module name
        00000000`01000000 00000000`03652000 sqlservr T (pdb symbols) c:\websymbols\sqlservr.pdb\5C20FFF154934868BFACEAF94B349B7C2\sqlservr.pdb
        Loaded symbol image file: sqlservr.exe
        Image path: C:\Program Files\Microsoft SQL Server\MSSQL.3\MSSQL\Binn\sqlservr.exe
        Image name: sqlservr.exe
        Timestamp: Sat Dec 11 07:22:41 2010 (4D02B641)
        CheckSum: 025D6890
        ImageSize: 02652000
        File version: 2005.90.5000.0
        Product version: 9.0.5000.0
        File flags: 0 (Mask 3F)
        File OS: 40000 NT Base
        File type: 1.0 App
        File date: 00000000.00000000
        Translations: 0000.04b0 0000.04e4 0409.04b0 0409.04e4
        0:004> ~*kL 20

        0 Id: 2064.2268 Suspend: 1 Teb: 000007ff`fffde000 Unfrozen
        Child-SP RetAddr Call Site
        00000000`0022f528 00000000`77d6e496 ntdll!ZwReadFile+0xa
        00000000`0022f530 000007ff`7fefe85e kernel32!ReadFile+0x1e0
        00000000`0022f5d0 000007ff`7fefe78d advapi32!ScGetPipeInput+0x3e
        00000000`0022f640 000007ff`7fee4ec9 advapi32!ScDispatcherLoop+0xa0
        00000000`0022f720 00000000`02bd78cb advapi32!StartServiceCtrlDispatcherW+0x119
        00000000`0022f990 00000000`01880e40 sqlservr!wmain+0x33b
        00000000`0022ff50 00000000`77d5969c sqlservr!NtCurrentTeb+0x1b0
        00000000`0022ff80 00000000`00000000 kernel32!BaseProcessStart+0x29

        1 Id: 2064.1424 Suspend: 1 Teb: 000007ff`fffd5000 Unfrozen
        Child-SP RetAddr Call Site
        00000000`0461f708 00000000`77d44efb ntdll!NtSignalAndWaitForSingleObject+0xa
        00000000`0461f710 00000000`015d674c kernel32!SignalObjectAndWait+0x133
        00000000`0461f7c0 00000000`0176188f sqlservr!SOS_Scheduler::SwitchContext+0x31c
        00000000`0461fab0 00000000`015c483e sqlservr!SOS_Scheduler::Idle+0x9f
        00000000`0461faf0 00000000`015c4ad9 sqlservr!SOS_Task::Param::Execute+0xee
        00000000`0461fc00 00000000`015bb254 sqlservr!SOS_Scheduler::RunTask+0xc9
        00000000`0461fc90 00000000`014d4687 sqlservr!SOS_Scheduler::ProcessTasks+0xb4
        00000000`0461fd00 00000000`017be7b9 sqlservr!SchedulerManager::WorkerEntryPoint+0xe7
        00000000`0461fda0 00000000`017be585 sqlservr!SystemThread::RunWorker+0x59
        00000000`0461fde0 00000000`017eade8 sqlservr!SystemThreadDispatcher::ProcessWorker+0xb5
        00000000`0461fe80 00000000`781337d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x128
        00000000`0461ff20 000007ff`fffd6498 msvcr80!_callthreadstartex+0x17
        00000000`0461ff28 00000000`005735e0 0x7ff`fffd6498
        00000000`0461ff30 00000000`005735e0 0x5735e0
        00000000`0461ff38 00000000`005bd7a0 0x5735e0
        00000000`0461ff40 00000000`78133810 0x5bd7a0
        00000000`0461ff48 00000000`78133894 msvcr80!_threadstartex
        00000000`0461ff50 00000000`781e95c0 msvcr80!_threadstartex+0x84
        00000000`0461ff58 00000000`005735e0 msvcr80!__initialmbcinfo
        00000000`0461ff60 00000000`00000000 0x5735e0

        2 Id: 2064.12d4 Suspend: 1 Teb: 000007ff`fffae000 Unfrozen
        Child-SP RetAddr Call Site
        00000000`0481def8 00000000`77d44efb ntdll!NtSignalAndWaitForSingleObject+0xa
        00000000`0481df00 00000000`015d674c kernel32!SignalObjectAndWait+0x133
        00000000`0481dfb0 00000000`015d0497 sqlservr!SOS_Scheduler::SwitchContext+0x31c
        00000000`0481e2a0 00000000`015abe00 sqlservr!SOS_Scheduler::Suspend+0x97
        00000000`0481e2e0 00000000`015a8dd1 sqlservr!SOS_Event::Wait+0x150
        00000000`0481e340 00000000`015a8447 sqlservr!ResQueueBase::Dequeue+0x131
        00000000`0481e400 00000000`015c483e sqlservr!SQLServerLogMgr::LogWriter+0x4d7
        00000000`0481faf0 00000000`015c4ad9 sqlservr!SOS_Task::Param::Execute+0xee
        00000000`0481fc00 00000000`015bb254 sqlservr!SOS_Scheduler::RunTask+0xc9
        00000000`0481fc90 00000000`014d4687 sqlservr!SOS_Scheduler::ProcessTasks+0xb4
        00000000`0481fd00 00000000`017be7b9 sqlservr!SchedulerManager::WorkerEntryPoint+0xe7
        00000000`0481fda0 00000000`017be585 sqlservr!SystemThread::RunWorker+0x59
        00000000`0481fde0 00000000`017eade8 sqlservr!SystemThreadDispatcher::ProcessWorker+0xb5
        00000000`0481fe80 00000000`781337d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x128
        00000000`0481ff20 000007ff`fffaf498 msvcr80!_callthreadstartex+0x17
        00000000`0481ff28 00000000`005735e0 0x7ff`fffaf498
        00000000`0481ff30 00000000`005735e0 0x5735e0
        00000000`0481ff38 00000000`005bd7a0 0x5735e0
        00000000`0481ff40 00000000`78133810 0x5bd7a0
        00000000`0481ff48 00000000`78133894 msvcr80!_threadstartex
        00000000`0481ff50 00000000`781e95c0 msvcr80!_threadstartex+0x84
        00000000`0481ff58 00000000`005735e0 msvcr80!__initialmbcinfo
        00000000`0481ff60 00000000`00000000 0x5735e0

        3 Id: 2064.184c Suspend: 1 Teb: 000007ff`fffac000 Unfrozen
        Child-SP RetAddr Call Site
        00000000`04a1f708 00000000`77d44efb ntdll!NtSignalAndWaitForSingleObject+0xa
        00000000`04a1f710 00000000`015d674c kernel32!SignalObjectAndWait+0x133
        00000000`04a1f7c0 00000000`0176188f sqlservr!SOS_Scheduler::SwitchContext+0x31c
        00000000`04a1fab0 00000000`015c483e sqlservr!SOS_Scheduler::Idle+0x9f
        00000000`04a1faf0 00000000`015c4ad9 sqlservr!SOS_Task::Param::Execute+0xee
        00000000`04a1fc00 00000000`015bb254 sqlservr!SOS_Scheduler::RunTask+0xc9
        00000000`04a1fc90 00000000`014d4687 sqlservr!SOS_Scheduler::ProcessTasks+0xb4
        00000000`04a1fd00 00000000`017be7b9 sqlservr!SchedulerManager::WorkerEntryPoint+0xe7
        00000000`04a1fda0 00000000`017be585 sqlservr!SystemThread::RunWorker+0x59
        00000000`04a1fde0 00000000`017eade8 sqlservr!SystemThreadDispatcher::ProcessWorker+0xb5
        00000000`04a1fe80 00000000`781337d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x128
        00000000`04a1ff20 000007ff`fffad498 msvcr80!_callthreadstartex+0x17
        00000000`04a1ff28 00000000`005735e0 0x7ff`fffad498
        00000000`04a1ff30 00000000`005735e0 0x5735e0
        00000000`04a1ff38 00000000`005bd7a0 0x5735e0
        00000000`04a1ff40 00000000`78133810 0x5bd7a0
        00000000`04a1ff48 00000000`78133894 msvcr80!_threadstartex
        00000000`04a1ff50 00000000`781e95c0 msvcr80!_threadstartex+0x84
        00000000`04a1ff58 00000000`005735e0 msvcr80!__initialmbcinfo
        00000000`04a1ff60 00000000`00000000 0x5735e0

        # 4 Id: 2064.4b4 Suspend: 1 Teb: 000007ff`fffaa000 Unfrozen
        Child-SP RetAddr Call Site
        00000000`04c1dea8 00000000`77d704ef ntdll!ZwWaitForSingleObject+0xa
        00000000`04c1deb0 00000000`018c5b63 kernel32!WaitForSingleObjectEx+0x130
        00000000`04c1df50 00000000`018c555b sqlservr!CDmpDump::DumpInternal+0x4a3
        00000000`04c1e040 00000000`01f6c4e3 sqlservr!CDmpDump::Dump+0x3b
        00000000`04c1e090 00000000`01f6f797 sqlservr!CImageHelper::DoMiniDump+0x413
        00000000`04c1e1f0 00000000`0275d793 sqlservr!stackTrace+0x6e7
        00000000`04c1f720 00000000`01d488c0 sqlservr!SQL_SOSDeadlockSchedulersCallback+0xa3
        00000000`04c1f7a0 00000000`01afb426 sqlservr!SOS_OS::ExecuteDeadlockSchedulerCallbacks+0x50
        00000000`04c1f800 00000000`01550f37 sqlservr!alloca_probe+0x228a76
        00000000`04c1f9a0 00000000`02b49389 sqlservr!SchedulerMonitor::Run+0x107
        00000000`04c1fac0 00000000`015c483e sqlservr!SchedulerMonitor::EntryPoint+0x9
        00000000`04c1faf0 00000000`015c4ad9 sqlservr!SOS_Task::Param::Execute+0xee
        00000000`04c1fc00 00000000`015bb254 sqlservr!SOS_Scheduler::RunTask+0xc9
        00000000`04c1fc90 00000000`014d4687 sqlservr!SOS_Scheduler::ProcessTasks+0xb4
        00000000`04c1fd00 00000000`017be7b9 sqlservr!SchedulerManager::WorkerEntryPoint+0xe7
        00000000`04c1fda0 00000000`017be585 sqlservr!SystemThread::RunWorker+0x59
        00000000`04c1fde0 00000000`017eade8 sqlservr!SystemThreadDispatcher::ProcessWorker+0xb5
        00000000`04c1fe80 00000000`781337d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x128
        00000000`04c1ff20 000007ff`fffab498 msvcr80!_callthreadstartex+0x17
        00000000`04c1ff28 00000000`005735e0 0x7ff`fffab498
        00000000`04c1ff30 00000000`005735e0 0x5735e0
        00000000`04c1ff38 00000000`005bd7a0 0x5735e0
        00000000`04c1ff40 00000000`78133810 0x5bd7a0
        00000000`04c1ff48 00000000`78133894 msvcr80!_threadstartex
        00000000`04c1ff50 00000000`781e95c0 msvcr80!_threadstartex+0x84
        00000000`04c1ff58 00000000`005735e0 msvcr80!__initialmbcinfo
        00000000`04c1ff60 00000000`00000000 0x5735e0

        5 Id: 2064.12c Suspend: 1 Teb: 000007ff`fffa8000 Unfrozen
        Child-SP RetAddr Call Site
        00000000`04e1f708 00000000`77d44efb ntdll!NtSignalAndWaitForSingleObject+0xa
        00000000`04e1f710 00000000`015d674c kernel32!SignalObjectAndWait+0x133
        00000000`04e1f7c0 00000000`0176188f sqlservr!SOS_Scheduler::SwitchContext+0x31c
        00000000`04e1fab0 00000000`015c483e sqlservr!SOS_Scheduler::Idle+0x9f
        00000000`04e1faf0 00000000`015c4ad9 sqlservr!SOS_Task::Param::Execute+0xee
        00000000`04e1fc00 00000000`015bb254 sqlservr!SOS_Scheduler::RunTask+0xc9
        00000000`04e1fc90 00000000`014d4687 sqlservr!SOS_Scheduler::ProcessTasks+0xb4
        00000000`04e1fd00 00000000`017be7b9 sqlservr!SchedulerManager::WorkerEntryPoint+0xe7
        00000000`04e1fda0 00000000`017be585 sqlservr!SystemThread::RunWorker+0x59
        00000000`04e1fde0 00000000`017eade8 sqlservr!SystemThreadDispatcher::ProcessWorker+0xb5
        00000000`04e1fe80 00000000`781337d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x128
        00000000`04e1ff20 000007ff`fffa9498 msvcr80!_callthreadstartex+0x17
        00000000`04e1ff28 00000000`005735e0 0x7ff`fffa9498
        00000000`04e1ff30 00000000`005735e0 0x5735e0
        00000000`04e1ff38 00000000`005bd7a0 0x5735e0
        00000000`04e1ff40 00000000`78133810 0x5bd7a0
        00000000`04e1ff48 00000000`78133894 msvcr80!_threadstartex
        00000000`04e1ff50 00000000`781e95c0 msvcr80!_threadstartex+0x84
        00000000`04e1ff58 00000000`005735e0 msvcr80!__initialmbcinfo
        00000000`04e1ff60 00000000`00000000 0x5735e0

        6 Id: 2064.2038 Suspend: 1 Teb: 000007ff`fffa6000 Unfrozen
        Child-SP RetAddr Call Site
        00000000`0501efe8 00000000`77d44efb ntdll!NtSignalAndWaitForSingleObject+0xa
        00000000`0501eff0 00000000`015d674c kernel32!SignalObjectAndWait+0x133
        00000000`0501f0a0 00000000`015d0497 sqlservr!SOS_Scheduler::SwitchContext+0x31c
        00000000`0501f390 00000000`015abe00 sqlservr!SOS_Scheduler::Suspend+0x97
        00000000`0501f3d0 00000000`0286e0ec sqlservr!SOS_Event::Wait+0x150
        00000000`0501f430 00000000`02bc18b3 sqlservr!SignalProc+0x15c
        00000000`0501f620 00000000`015c483e sqlservr!StartUp::InitDBMS+0x3d3
        00000000`0501faf0 00000000`015c4ad9 sqlservr!SOS_Task::Param::Execute+0xee
        00000000`0501fc00 00000000`015bb254 sqlservr!SOS_Scheduler::RunTask+0xc9
        00000000`0501fc90 00000000`014d4687 sqlservr!SOS_Scheduler::ProcessTasks+0xb4
        00000000`0501fd00 00000000`017be7b9 sqlservr!SchedulerManager::WorkerEntryPoint+0xe7
        00000000`0501fda0 00000000`017be585 sqlservr!SystemThread::RunWorker+0x59
        00000000`0501fde0 00000000`017eade8 sqlservr!SystemThreadDispatcher::ProcessWorker+0xb5
        00000000`0501fe80 00000000`781337d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x128
        00000000`0501ff20 000007ff`fffa7498 msvcr80!_callthreadstartex+0x17
        00000000`0501ff28 00000000`005735e0 0x7ff`fffa7498
        00000000`0501ff30 00000000`005735e0 0x5735e0
        00000000`0501ff38 00000000`005bd7a0 0x5735e0
        00000000`0501ff40 00000000`78133810 0x5bd7a0
        00000000`0501ff48 00000000`78133894 msvcr80!_threadstartex
        00000000`0501ff50 00000000`781e95c0 msvcr80!_threadstartex+0x84
        00000000`0501ff58 00000000`005735e0 msvcr80!__initialmbcinfo
        00000000`0501ff60 00000000`00000000 0x5735e0

        7 Id: 2064.148c Suspend: 1 Teb: 000007ff`fffa4000 Unfrozen
        Child-SP RetAddr Call Site
        00000000`0521f708 00000000`77d44efb ntdll!NtSignalAndWaitForSingleObject+0xa
        00000000`0521f710 00000000`015d674c kernel32!SignalObjectAndWait+0x133
        00000000`0521f7c0 00000000`0176188f sqlservr!SOS_Scheduler::SwitchContext+0x31c
        00000000`0521fab0 00000000`015c483e sqlservr!SOS_Scheduler::Idle+0x9f
        00000000`0521faf0 00000000`015c4ad9 sqlservr!SOS_Task::Param::Execute+0xee
        00000000`0521fc00 00000000`015bb254 sqlservr!SOS_Scheduler::RunTask+0xc9
        00000000`0521fc90 00000000`014d4687 sqlservr!SOS_Scheduler::ProcessTasks+0xb4
        00000000`0521fd00 00000000`017be7b9 sqlservr!SchedulerManager::WorkerEntryPoint+0xe7
        00000000`0521fda0 00000000`017be585 sqlservr!SystemThread::RunWorker+0x59
        00000000`0521fde0 00000000`017eade8 sqlservr!SystemThreadDispatcher::ProcessWorker+0xb5
        00000000`0521fe80 00000000`781337d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x128
        00000000`0521ff20 000007ff`fffa5498 msvcr80!_callthreadstartex+0x17
        00000000`0521ff28 00000000`005735e0 0x7ff`fffa5498
        00000000`0521ff30 00000000`005735e0 0x5735e0
        00000000`0521ff38 00000000`005bd7a0 0x5735e0
        00000000`0521ff40 00000000`78133810 0x5bd7a0
        00000000`0521ff48 00000000`78133894 msvcr80!_threadstartex
        00000000`0521ff50 00000000`781e95c0 msvcr80!_threadstartex+0x84
        00000000`0521ff58 00000000`005735e0 msvcr80!__initialmbcinfo
        00000000`0521ff60 00000000`00000000 0x5735e0

        8 Id: 2064.2638 Suspend: 1 Teb: 000007ff`fffa2000 Unfrozen
        Child-SP RetAddr Call Site
        00000000`0541f8e8 00000000`77d6b940 ntdll!ZwRemoveIoCompletion+0xa
        00000000`0541f8f0 00000000`015b8879 kernel32!GetQueuedCompletionStatus+0x50
        00000000`0541f960 00000000`015c483e sqlservr!SOS_Node::ListenOnIOCompletionPort+0x119
        00000000`0541faf0 00000000`015c4ad9 sqlservr!SOS_Task::Param::Execute+0xee
        00000000`0541fc00 00000000`015bb254 sqlservr!SOS_Scheduler::RunTask+0xc9
        00000000`0541fc90 00000000`014d4687 sqlservr!SOS_Scheduler::ProcessTasks+0xb4
        00000000`0541fd00 00000000`017be7b9 sqlservr!SchedulerManager::WorkerEntryPoint+0xe7
        00000000`0541fda0 00000000`017be585 sqlservr!SystemThread::RunWorker+0x59
        00000000`0541fde0 00000000`017eade8 sqlservr!SystemThreadDispatcher::ProcessWorker+0xb5
        00000000`0541fe80 00000000`781337d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x128
        00000000`0541ff20 000007ff`fffa3498 msvcr80!_callthreadstartex+0x17
        00000000`0541ff28 00000000`005735e0 0x7ff`fffa3498
        00000000`0541ff30 00000000`005735e0 0x5735e0
        00000000`0541ff38 00000000`005bd7a0 0x5735e0
        00000000`0541ff40 00000000`78133810 0x5bd7a0
        00000000`0541ff48 00000000`78133894 msvcr80!_threadstartex
        00000000`0541ff50 00000000`781e95c0 msvcr80!_threadstartex+0x84
        00000000`0541ff58 00000000`005735e0 msvcr80!__initialmbcinfo
        00000000`0541ff60 00000000`00000000 0x5735e0

        9 Id: 2064.267c Suspend: 1 Teb: 000007ff`fffa0000 Unfrozen
        Child-SP RetAddr Call Site
        00000000`0561ef28 00000000`77d704ef ntdll!ZwWaitForSingleObject+0xa
        00000000`0561ef30 00000000`015d6b4e kernel32!WaitForSingleObjectEx+0x130
        00000000`0561efd0 00000000`015d0497 sqlservr!SOS_Scheduler::SwitchContext+0x71e
        00000000`0561f2c0 00000000`015abe00 sqlservr!SOS_Scheduler::Suspend+0x97
        00000000`0561f300 00000000`015899f7 sqlservr!SOS_Event::Wait+0x150
        00000000`0561f360 00000000`02b46c69 sqlservr!BPool::LazyWriter+0x407
        00000000`0561f4e0 00000000`015c483e sqlservr!lazywriter+0x489
        00000000`0561faf0 00000000`015c4ad9 sqlservr!SOS_Task::Param::Execute+0xee
        00000000`0561fc00 00000000`015bb254 sqlservr!SOS_Scheduler::RunTask+0xc9
        00000000`0561fc90 00000000`014d4687 sqlservr!SOS_Scheduler::ProcessTasks+0xb4
        00000000`0561fd00 00000000`017be7b9 sqlservr!SchedulerManager::WorkerEntryPoint+0xe7
        00000000`0561fda0 00000000`017be585 sqlservr!SystemThread::RunWorker+0x59
        00000000`0561fde0 00000000`017eade8 sqlservr!SystemThreadDispatcher::ProcessWorker+0xb5
        00000000`0561fe80 00000000`781337d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x128
        00000000`0561ff20 000007ff`fffa1498 msvcr80!_callthreadstartex+0x17
        00000000`0561ff28 00000000`005735e0 0x7ff`fffa1498
        00000000`0561ff30 00000000`005735e0 0x5735e0
        00000000`0561ff38 00000000`005bd7a0 0x5735e0
        00000000`0561ff40 00000000`78133810 0x5bd7a0
        00000000`0561ff48 00000000`78133894 msvcr80!_threadstartex
        00000000`0561ff50 00000000`781e95c0 msvcr80!_threadstartex+0x84
        00000000`0561ff58 00000000`005735e0 msvcr80!__initialmbcinfo
        00000000`0561ff60 00000000`00000000 0x5735e0

        10 Id: 2064.21a8 Suspend: 1 Teb: 000007ff`fff9e000 Unfrozen
        Child-SP RetAddr Call Site
        00000000`0581f018 00000000`77d6d02b ntdll!NtWaitForMultipleObjects+0xa
        00000000`0581f020 00000000`77d6bb31 kernel32!WaitForMultipleObjectsEx+0x1cf
        00000000`0581f140 00000000`014f6b64 kernel32!WaitForMultipleObjects+0x11
        00000000`0581f180 00000000`02b449d7 sqlservr!ResourceMonitor::CheckIndicators+0x184
        00000000`0581f230 00000000`02b49a51 sqlservr!ResourceMonitor::ResourceMonitorTask+0x127
        00000000`0581f360 00000000`015c483e sqlservr!SetupResourceMonitorTaskContext+0x481
        00000000`0581faf0 00000000`015c4ad9 sqlservr!SOS_Task::Param::Execute+0xee
        00000000`0581fc00 00000000`015bb254 sqlservr!SOS_Scheduler::RunTask+0xc9
        00000000`0581fc90 00000000`014d4687 sqlservr!SOS_Scheduler::ProcessTasks+0xb4
        00000000`0581fd00 00000000`017be7b9 sqlservr!SchedulerManager::WorkerEntryPoint+0xe7
        00000000`0581fda0 00000000`017be585 sqlservr!SystemThread::RunWorker+0x59
        00000000`0581fde0 00000000`017eade8 sqlservr!SystemThreadDispatcher::ProcessWorker+0xb5
        00000000`0581fe80 00000000`781337d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x128
        00000000`0581ff20 000007ff`fff9f498 msvcr80!_callthreadstartex+0x17
        00000000`0581ff28 00000000`005735e0 0x7ff`fff9f498
        00000000`0581ff30 00000000`005735e0 0x5735e0
        00000000`0581ff38 00000000`005bd7a0 0x5735e0
        00000000`0581ff40 00000000`78133810 0x5bd7a0
        00000000`0581ff48 00000000`78133894 msvcr80!_threadstartex
        00000000`0581ff50 00000000`781e95c0 msvcr80!_threadstartex+0x84
        00000000`0581ff58 00000000`005735e0 msvcr80!__initialmbcinfo
        00000000`0581ff60 00000000`00000000 0x5735e0

        11 Id: 2064.2394 Suspend: 1 Teb: 000007ff`fff9c000 Unfrozen
        Child-SP RetAddr Call Site
        00000000`07eeeff8 00000000`77d704ef ntdll!ZwWaitForSingleObject+0xa
        00000000`07eef000 00000000`014f822f kernel32!WaitForSingleObjectEx+0x130
        00000000`07eef0a0 00000000`01531042 sqlservr!SystemThread::Suspend+0x1f
        00000000`07eef0e0 00000000`015abe00 sqlservr!SOS_Scheduler::SuspendPreemptive+0xe2
        00000000`07eef240 00000000`015a8dd1 sqlservr!SOS_Event::Wait+0x150
        00000000`07eef2a0 00000000`0157790e sqlservr!ResQueueBase::Dequeue+0x131
        00000000`07eef360 00000000`014f7be5 sqlservr!DeadlockMonitor::WorkLoop+0x8e
        00000000`07eef460 00000000`02b463fe sqlservr!lockMonitor+0xf5
        00000000`07eef570 00000000`015c483e sqlservr!lockMonitorThread+0x3de
        00000000`07eefaf0 00000000`015c4ad9 sqlservr!SOS_Task::Param::Execute+0xee
        00000000`07eefc00 00000000`015bb254 sqlservr!SOS_Scheduler::RunTask+0xc9
        00000000`07eefc90 00000000`014d4687 sqlservr!SOS_Scheduler::ProcessTasks+0xb4
        00000000`07eefd00 00000000`017be7b9 sqlservr!SchedulerManager::WorkerEntryPoint+0xe7
        00000000`07eefda0 00000000`017be585 sqlservr!SystemThread::RunWorker+0x59
        00000000`07eefde0 00000000`017eade8 sqlservr!SystemThreadDispatcher::ProcessWorker+0xb5
        00000000`07eefe80 00000000`781337d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x128
        00000000`07eeff20 000007ff`fff9d498 msvcr80!_callthreadstartex+0x17
        00000000`07eeff28 00000000`005735e0 0x7ff`fff9d498
        00000000`07eeff30 00000000`005735e0 0x5735e0
        00000000`07eeff38 00000000`005bd7a0 0x5735e0
        00000000`07eeff40 00000000`78133810 0x5bd7a0
        00000000`07eeff48 00000000`78133894 msvcr80!_threadstartex
        00000000`07eeff50 00000000`781e95c0 msvcr80!_threadstartex+0x84
        00000000`07eeff58 00000000`005735e0 msvcr80!__initialmbcinfo
        00000000`07eeff60 00000000`00000000 0x5735e0

        12 Id: 2064.241c Suspend: 1 Teb: 000007ff`fff9a000 Unfrozen
        Child-SP RetAddr Call Site
        00000000`080ef558 00000000`77d704ef ntdll!ZwWaitForSingleObject+0xa
        00000000`080ef560 00000000`015d6b4e kernel32!WaitForSingleObjectEx+0x130
        00000000`080ef600 00000000`015d0497 sqlservr!SOS_Scheduler::SwitchContext+0x71e
        00000000`080ef8f0 00000000`015abe00 sqlservr!SOS_Scheduler::Suspend+0x97
        00000000`080ef930 00000000`015112db sqlservr!SOS_Event::Wait+0x150
        00000000`080ef990 00000000`02bad0b3 sqlservr!CTraceManagementTask::Invoke+0x3b
        00000000`080efa00 00000000`015c483e sqlservr!CTraceBatchTask::Task+0x183
        00000000`080efaf0 00000000`015c4ad9 sqlservr!SOS_Task::Param::Execute+0xee
        00000000`080efc00 00000000`015bb254 sqlservr!SOS_Scheduler::RunTask+0xc9
        00000000`080efc90 00000000`014d4687 sqlservr!SOS_Scheduler::ProcessTasks+0xb4
        00000000`080efd00 00000000`017be7b9 sqlservr!SchedulerManager::WorkerEntryPoint+0xe7
        00000000`080efda0 00000000`017be585 sqlservr!SystemThread::RunWorker+0x59
        00000000`080efde0 00000000`017eade8 sqlservr!SystemThreadDispatcher::ProcessWorker+0xb5
        00000000`080efe80 00000000`781337d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x128
        00000000`080eff20 000007ff`fff9b498 msvcr80!_callthreadstartex+0x17
        00000000`080eff28 00000000`00575920 0x7ff`fff9b498
        00000000`080eff30 00000000`00575920 0x575920
        00000000`080eff38 00000000`005bd7a0 0x575920
        00000000`080eff40 00000000`78133810 0x5bd7a0
        00000000`080eff48 00000000`78133894 msvcr80!_threadstartex
        00000000`080eff50 00000000`781e95c0 msvcr80!_threadstartex+0x84
        00000000`080eff58 00000000`00575920 msvcr80!__initialmbcinfo
        00000000`080eff60 00000000`00000000 0x575920

        13 Id: 2064.1214 Suspend: 1 Teb: 000007ff`fff98000 Unfrozen
        Child-SP RetAddr Call Site
        00000000`082fecc8 00000000`77d44efb ntdll!NtSignalAndWaitForSingleObject+0xa
        00000000`082fecd0 00000000`015d674c kernel32!SignalObjectAndWait+0x133
        00000000`082fed80 00000000`015d0497 sqlservr!SOS_Scheduler::SwitchContext+0x31c
        00000000`082ff070 00000000`015abe00 sqlservr!SOS_Scheduler::Suspend+0x97
        00000000`082ff0b0 00000000`015a8dd1 sqlservr!SOS_Event::Wait+0x150
        00000000`082ff110 00000000`01f551bb sqlservr!ResQueueBase::Dequeue+0x131
        00000000`082ff1d0 00000000`02b4771d sqlservr!ResQueue::Dequeue+0x1b
        00000000`082ff200 00000000`015c483e sqlservr!systemTaskThread+0x5cd
        00000000`082ffaf0 00000000`015c4ad9 sqlservr!SOS_Task::Param::Execute+0xee
        00000000`082ffc00 00000000`015bb254 sqlservr!SOS_Scheduler::RunTask+0xc9
        00000000`082ffc90 00000000`014d4687 sqlservr!SOS_Scheduler::ProcessTasks+0xb4
        00000000`082ffd00 00000000`017be7b9 sqlservr!SchedulerManager::WorkerEntryPoint+0xe7
        00000000`082ffda0 00000000`017be585 sqlservr!SystemThread::RunWorker+0x59
        00000000`082ffde0 00000000`017eade8 sqlservr!SystemThreadDispatcher::ProcessWorker+0xb5
        00000000`082ffe80 00000000`781337d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x128
        00000000`082fff20 000007ff`fff99498 msvcr80!_callthreadstartex+0x17
        00000000`082fff28 00000000`00575920 0x7ff`fff99498
        00000000`082fff30 00000000`00575920 0x575920
        00000000`082fff38 00000000`005bd7a0 0x575920
        00000000`082fff40 00000000`78133810 0x5bd7a0
        00000000`082fff48 00000000`78133894 msvcr80!_threadstartex
        00000000`082fff50 00000000`781e95c0 msvcr80!_threadstartex+0x84
        00000000`082fff58 00000000`00575920 msvcr80!__initialmbcinfo
        00000000`082fff60 00000000`00000000 0x575920

        14 Id: 2064.27c4 Suspend: 1 Teb: 000007ff`fff96000 Unfrozen
        Child-SP RetAddr Call Site
        00000000`0852f708 00000000`77d44efb ntdll!NtSignalAndWaitForSingleObject+0xa
        00000000`0852f710 00000000`015d674c kernel32!SignalObjectAndWait+0x133
        00000000`0852f7c0 00000000`0176188f sqlservr!SOS_Scheduler::SwitchContext+0x31c
        00000000`0852fab0 00000000`015c483e sqlservr!SOS_Scheduler::Idle+0x9f
        00000000`0852faf0 00000000`015c4ad9 sqlservr!SOS_Task::Param::Execute+0xee
        00000000`0852fc00 00000000`015bb254 sqlservr!SOS_Scheduler::RunTask+0xc9
        00000000`0852fc90 00000000`014d4687 sqlservr!SOS_Scheduler::ProcessTasks+0xb4
        00000000`0852fd00 00000000`017be7b9 sqlservr!SchedulerManager::WorkerEntryPoint+0xe7
        00000000`0852fda0 00000000`017be585 sqlservr!SystemThread::RunWorker+0x59
        00000000`0852fde0 00000000`017eade8 sqlservr!SystemThreadDispatcher::ProcessWorker+0xb5
        00000000`0852fe80 00000000`781337d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x128
        00000000`0852ff20 000007ff`fff97498 msvcr80!_callthreadstartex+0x17
        00000000`0852ff28 00000000`00575920 0x7ff`fff97498
        00000000`0852ff30 00000000`00575920 0x575920
        00000000`0852ff38 00000000`005bd7a0 0x575920
        00000000`0852ff40 00000000`78133810 0x5bd7a0
        00000000`0852ff48 00000000`78133894 msvcr80!_threadstartex
        00000000`0852ff50 00000000`781e95c0 msvcr80!_threadstartex+0x84
        00000000`0852ff58 00000000`00575920 msvcr80!__initialmbcinfo
        00000000`0852ff60 00000000`00000000 0x575920

        15 Id: 2064.225c Suspend: 1 Teb: 000007ff`fff94000 Unfrozen
        Child-SP RetAddr Call Site
        00000000`0873f8e8 00000000`77d6b940 ntdll!ZwRemoveIoCompletion+0xa
        00000000`0873f8f0 00000000`015b8879 kernel32!GetQueuedCompletionStatus+0x50
        00000000`0873f960 00000000`015c483e sqlservr!SOS_Node::ListenOnIOCompletionPort+0x119
        00000000`0873faf0 00000000`015c4ad9 sqlservr!SOS_Task::Param::Execute+0xee
        00000000`0873fc00 00000000`015bb254 sqlservr!SOS_Scheduler::RunTask+0xc9
        00000000`0873fc90 00000000`014d4687 sqlservr!SOS_Scheduler::ProcessTasks+0xb4
        00000000`0873fd00 00000000`017be7b9 sqlservr!SchedulerManager::WorkerEntryPoint+0xe7
        00000000`0873fda0 00000000`017be585 sqlservr!SystemThread::RunWorker+0x59
        00000000`0873fde0 00000000`017eade8 sqlservr!SystemThreadDispatcher::ProcessWorker+0xb5
        00000000`0873fe80 00000000`781337d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x128
        00000000`0873ff20 000007ff`fff95498 msvcr80!_callthreadstartex+0x17
        00000000`0873ff28 00000000`00575920 0x7ff`fff95498
        00000000`0873ff30 00000000`00575920 0x575920
        00000000`0873ff38 00000000`005bd7a0 0x575920
        00000000`0873ff40 00000000`78133810 0x5bd7a0
        00000000`0873ff48 00000000`78133894 msvcr80!_threadstartex
        00000000`0873ff50 00000000`781e95c0 msvcr80!_threadstartex+0x84
        00000000`0873ff58 00000000`00575920 msvcr80!__initialmbcinfo
        00000000`0873ff60 00000000`00000000 0x575920

        16 Id: 2064.11a8 Suspend: 1 Teb: 000007ff`fff92000 Unfrozen
        Child-SP RetAddr Call Site
        00000000`0893f828 00000000`77d704ef ntdll!ZwWaitForSingleObject+0xa
        00000000`0893f830 00000000`015d6b4e kernel32!WaitForSingleObjectEx+0x130
        00000000`0893f8d0 00000000`015cf3f7 sqlservr!SOS_Scheduler::SwitchContext+0x71e
        00000000`0893fbc0 00000000`015baf7e sqlservr!SOS_Scheduler::SuspendNonPreemptive+0x67
        00000000`0893fc00 00000000`015bb212 sqlservr!WorkDispatcher::DequeueTask+0x10e
        00000000`0893fc90 00000000`014d4687 sqlservr!SOS_Scheduler::ProcessTasks+0x72
        00000000`0893fd00 00000000`017be7b9 sqlservr!SchedulerManager::WorkerEntryPoint+0xe7
        00000000`0893fda0 00000000`017be585 sqlservr!SystemThread::RunWorker+0x59
        00000000`0893fde0 00000000`017eade8 sqlservr!SystemThreadDispatcher::ProcessWorker+0xb5
        00000000`0893fe80 00000000`781337d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x128
        00000000`0893ff20 000007ff`fff93498 msvcr80!_callthreadstartex+0x17
        00000000`0893ff28 00000000`00575920 0x7ff`fff93498
        00000000`0893ff30 00000000`00575920 0x575920
        00000000`0893ff38 00000000`005bd7a0 0x575920
        00000000`0893ff40 00000000`78133810 0x5bd7a0
        00000000`0893ff48 00000000`78133894 msvcr80!_threadstartex
        00000000`0893ff50 00000000`781e95c0 msvcr80!_threadstartex+0x84
        00000000`0893ff58 00000000`00575920 msvcr80!__initialmbcinfo
        00000000`0893ff60 00000000`00000000 0x575920

        17 Id: 2064.20a8 Suspend: 1 Teb: 000007ff`fff8e000 Unfrozen
        Child-SP RetAddr Call Site
        00000000`0e0bfe48 00000000`77d70606 ntdll!NtDelayExecution+0xa
        00000000`0e0bfe50 000007ff`671a23b0 kernel32!SleepEx+0xaf
        00000000`0e0bfef0 000007ff`671a3d1d msdtcprx!CConnectionManager::TimerProcForNonGuardedUser+0xe5
        00000000`0e0bff50 00000000`77d6b70a msdtcprx!CConnectionManager::TimerProc+0x1d
        00000000`0e0bff80 00000000`00000000 kernel32!BaseThreadStart+0x3a

        18 Id: 2064.275c Suspend: 1 Teb: 000007ff`fff8a000 Unfrozen
        Child-SP RetAddr Call Site
        00000000`0e54fce8 00000000`77d6b940 ntdll!ZwRemoveIoCompletion+0xa
        00000000`0e54fcf0 000007ff`7fd470b8 kernel32!GetQueuedCompletionStatus+0x50
        00000000`0e54fd60 000007ff`7fd46f42 rpcrt4!COMMON_ProcessCalls+0x255
        00000000`0e54fe00 000007ff`7fd471b9 rpcrt4!LOADABLE_TRANSPORT::ProcessIOEvents+0x14b
        00000000`0e54feb0 000007ff`7fd65ab6 rpcrt4!ProcessIOEventsWrapper+0x9
        00000000`0e54fee0 000007ff`7fd65e71 rpcrt4!BaseCachedThreadRoutine+0xde
        00000000`0e54ff50 00000000`77d6b70a rpcrt4!ThreadStartRoutine+0x21
        00000000`0e54ff80 00000000`00000000 kernel32!BaseThreadStart+0x3a

        19 Id: 2064.270c Suspend: 1 Teb: 000007ff`fff88000 Unfrozen
        Child-SP RetAddr Call Site
        00000000`0e75fbc8 00000000`77d704ef ntdll!ZwWaitForSingleObject+0xa
        00000000`0e75fbd0 000007ff`671ad6e8 kernel32!WaitForSingleObjectEx+0x130
        00000000`0e75fc70 000007ff`671ae1f1 msdtcprx!CSessionObject::MaintainItInUpState+0x378
        00000000`0e75fef0 000007ff`671ae35e msdtcprx!CSessionObject::MaintainIt+0x612
        00000000`0e75ff50 00000000`77d6b70a msdtcprx!CSessionObject::MaintainSession+0xe
        00000000`0e75ff80 00000000`00000000 kernel32!BaseThreadStart+0x3a

        20 Id: 2064.580 Suspend: 1 Teb: 000007ff`fff84000 Unfrozen
        Child-SP RetAddr Call Site
        00000000`0eb6f0f8 00000000`77d44efb ntdll!NtSignalAndWaitForSingleObject+0xa
        00000000`0eb6f100 00000000`015d674c kernel32!SignalObjectAndWait+0x133
        00000000`0eb6f1b0 00000000`015d0497 sqlservr!SOS_Scheduler::SwitchContext+0x31c
        00000000`0eb6f4a0 00000000`015abe00 sqlservr!SOS_Scheduler::Suspend+0x97
        00000000`0eb6f4e0 00000000`015a8dd1 sqlservr!SOS_Event::Wait+0x150
        00000000`0eb6f540 00000000`017d92db sqlservr!ResQueueBase::Dequeue+0x131
        00000000`0eb6f600 00000000`0178fa8a sqlservr!ResQueue::Dequeue+0x1b
        00000000`0eb6f630 00000000`02b49f1f sqlservr!CheckpointLoop+0x4ba
        00000000`0eb6fa80 00000000`015c483e sqlservr!ckptproc+0x4f
        00000000`0eb6faf0 00000000`015c4ad9 sqlservr!SOS_Task::Param::Execute+0xee
        00000000`0eb6fc00 00000000`015bb254 sqlservr!SOS_Scheduler::RunTask+0xc9
        00000000`0eb6fc90 00000000`014d4687 sqlservr!SOS_Scheduler::ProcessTasks+0xb4
        00000000`0eb6fd00 00000000`017be7b9 sqlservr!SchedulerManager::WorkerEntryPoint+0xe7
        00000000`0eb6fda0 00000000`017be585 sqlservr!SystemThread::RunWorker+0x59
        00000000`0eb6fde0 00000000`017eade8 sqlservr!SystemThreadDispatcher::ProcessWorker+0xb5
        00000000`0eb6fe80 00000000`781337d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x128
        00000000`0eb6ff20 000007ff`fff85498 msvcr80!_callthreadstartex+0x17
        00000000`0eb6ff28 00000000`005f6570 0x7ff`fff85498
        00000000`0eb6ff30 00000000`005f6570 0x5f6570
        00000000`0eb6ff38 00000000`005bd7a0 0x5f6570
        00000000`0eb6ff40 00000000`78133810 0x5bd7a0
        00000000`0eb6ff48 00000000`78133894 msvcr80!_threadstartex
        00000000`0eb6ff50 00000000`781e95c0 msvcr80!_threadstartex+0x84
        00000000`0eb6ff58 00000000`005f6570 msvcr80!__initialmbcinfo
        00000000`0eb6ff60 00000000`00000000 0x5f6570

        21 Id: 2064.1c7c Suspend: 1 Teb: 000007ff`fff82000 Unfrozen
        Child-SP RetAddr Call Site
        00000000`0ed7f818 00000000`77d704ef ntdll!ZwWaitForSingleObject+0xa
        00000000`0ed7f820 00000000`02bc1e13 kernel32!WaitForSingleObjectEx+0x130
        00000000`0ed7f8c0 00000000`02bc8b0f sqlservr!FRunCM+0x333
        00000000`0ed7fa30 00000000`015c483e sqlservr!initCM+0x3ff
        00000000`0ed7faf0 00000000`015c4ad9 sqlservr!SOS_Task::Param::Execute+0xee
        00000000`0ed7fc00 00000000`015bb254 sqlservr!SOS_Scheduler::RunTask+0xc9
        00000000`0ed7fc90 00000000`014d4687 sqlservr!SOS_Scheduler::ProcessTasks+0xb4
        00000000`0ed7fd00 00000000`017be7b9 sqlservr!SchedulerManager::WorkerEntryPoint+0xe7
        00000000`0ed7fda0 00000000`017be585 sqlservr!SystemThread::RunWorker+0x59
        00000000`0ed7fde0 00000000`017eade8 sqlservr!SystemThreadDispatcher::ProcessWorker+0xb5
        00000000`0ed7fe80 00000000`781337d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x128
        00000000`0ed7ff20 000007ff`fff83498 msvcr80!_callthreadstartex+0x17
        00000000`0ed7ff28 00000000`00573000 0x7ff`fff83498
        00000000`0ed7ff30 00000000`00573000 0x573000
        00000000`0ed7ff38 00000000`005bd7a0 0x573000
        00000000`0ed7ff40 00000000`78133810 0x5bd7a0
        00000000`0ed7ff48 00000000`78133894 msvcr80!_threadstartex
        00000000`0ed7ff50 00000000`781e95c0 msvcr80!_threadstartex+0x84
        00000000`0ed7ff58 00000000`00573000 msvcr80!__initialmbcinfo
        00000000`0ed7ff60 00000000`00000000 0x573000

        22 Id: 2064.2568 Suspend: 1 Teb: 000007ff`fff7e000 Unfrozen
        Child-SP RetAddr Call Site
        00000000`0f28e138 00000000`77d44efb ntdll!NtSignalAndWaitForSingleObject+0xa
        00000000`0f28e140 00000000`015d674c kernel32!SignalObjectAndWait+0x133
        00000000`0f28e1f0 00000000`015d0497 sqlservr!SOS_Scheduler::SwitchContext+0x31c
        00000000`0f28e4e0 00000000`015abe00 sqlservr!SOS_Scheduler::Suspend+0x97
        00000000`0f28e520 00000000`02ba6d9a sqlservr!SOS_Event::Wait+0x150
        00000000`0f28e580 00000000`02ba8a79 sqlservr!CSbTransmitter::TransmitterThread+0x31a
        00000000`0f28e960 00000000`02bad4e8 sqlservr!CSbTransmitter::BeginTransmitterThread+0x9
        00000000`0f28e990 00000000`02bad7d9 sqlservr!CSbTask::TaskStart+0x278
        00000000`0f28fac0 00000000`015c483e sqlservr!CSbTask::BeginTaskStart+0x9
        00000000`0f28faf0 00000000`015c4ad9 sqlservr!SOS_Task::Param::Execute+0xee
        00000000`0f28fc00 00000000`015bb254 sqlservr!SOS_Scheduler::RunTask+0xc9
        00000000`0f28fc90 00000000`014d4687 sqlservr!SOS_Scheduler::ProcessTasks+0xb4
        00000000`0f28fd00 00000000`017be7b9 sqlservr!SchedulerManager::WorkerEntryPoint+0xe7
        00000000`0f28fda0 00000000`017be585 sqlservr!SystemThread::RunWorker+0x59
        00000000`0f28fde0 00000000`017eade8 sqlservr!SystemThreadDispatcher::ProcessWorker+0xb5
        00000000`0f28fe80 00000000`781337d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x128
        00000000`0f28ff20 000007ff`fff7f498 msvcr80!_callthreadstartex+0x17
        00000000`0f28ff28 00000000`00573000 0x7ff`fff7f498
        00000000`0f28ff30 00000000`00573000 0x573000
        00000000`0f28ff38 00000000`005bd7a0 0x573000
        00000000`0f28ff40 00000000`78133810 0x5bd7a0
        00000000`0f28ff48 00000000`78133894 msvcr80!_threadstartex
        00000000`0f28ff50 00000000`781e95c0 msvcr80!_threadstartex+0x84
        00000000`0f28ff58 00000000`00573000 msvcr80!__initialmbcinfo
        00000000`0f28ff60 00000000`00000000 0x573000

        23 Id: 2064.1c1c Suspend: 1 Teb: 000007ff`fff7a000 Unfrozen
        Child-SP RetAddr Call Site
        00000000`0f68e2d8 00000000`77d44efb ntdll!NtSignalAndWaitForSingleObject+0xa
        00000000`0f68e2e0 00000000`015d674c kernel32!SignalObjectAndWait+0x133
        00000000`0f68e390 00000000`015d0497 sqlservr!SOS_Scheduler::SwitchContext+0x31c
        00000000`0f68e680 00000000`015abe00 sqlservr!SOS_Scheduler::Suspend+0x97
        00000000`0f68e6c0 00000000`02ba95c1 sqlservr!SOS_Event::Wait+0x150
        00000000`0f68e720 00000000`02ba9e25 sqlservr!CServiceBrokerMgr::PrimaryEventHandler+0x111
        00000000`0f68e960 00000000`02bad4e8 sqlservr!CSbEventHandler::Invoke+0x15
        00000000`0f68e990 00000000`02bad7d9 sqlservr!CSbTask::TaskStart+0x278
        00000000`0f68fac0 00000000`015c483e sqlservr!CSbTask::BeginTaskStart+0x9
        00000000`0f68faf0 00000000`015c4ad9 sqlservr!SOS_Task::Param::Execute+0xee
        00000000`0f68fc00 00000000`015bb254 sqlservr!SOS_Scheduler::RunTask+0xc9
        00000000`0f68fc90 00000000`014d4687 sqlservr!SOS_Scheduler::ProcessTasks+0xb4
        00000000`0f68fd00 00000000`017be7b9 sqlservr!SchedulerManager::WorkerEntryPoint+0xe7
        00000000`0f68fda0 00000000`017be585 sqlservr!SystemThread::RunWorker+0x59
        00000000`0f68fde0 00000000`017eade8 sqlservr!SystemThreadDispatcher::ProcessWorker+0xb5
        00000000`0f68fe80 00000000`781337d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x128
        00000000`0f68ff20 000007ff`fff7b498 msvcr80!_callthreadstartex+0x17
        00000000`0f68ff28 00000000`00573000 0x7ff`fff7b498
        00000000`0f68ff30 00000000`00573000 0x573000
        00000000`0f68ff38 00000000`005bd7a0 0x573000
        00000000`0f68ff40 00000000`78133810 0x5bd7a0
        00000000`0f68ff48 00000000`78133894 msvcr80!_threadstartex
        00000000`0f68ff50 00000000`781e95c0 msvcr80!_threadstartex+0x84
        00000000`0f68ff58 00000000`00573000 msvcr80!__initialmbcinfo
        00000000`0f68ff60 00000000`00000000 0x573000

        24 Id: 2064.2758 Suspend: 1 Teb: 000007ff`fff76000 Unfrozen
        Child-SP RetAddr Call Site
        00000000`0fb7e138 00000000`77d44efb ntdll!NtSignalAndWaitForSingleObject+0xa
        00000000`0fb7e140 00000000`015d674c kernel32!SignalObjectAndWait+0x133
        00000000`0fb7e1f0 00000000`015d0497 sqlservr!SOS_Scheduler::SwitchContext+0x31c
        00000000`0fb7e4e0 00000000`015abe00 sqlservr!SOS_Scheduler::Suspend+0x97
        00000000`0fb7e520 00000000`02ba6d9a sqlservr!SOS_Event::Wait+0x150
        00000000`0fb7e580 00000000`02ba8a79 sqlservr!CSbTransmitter::TransmitterThread+0x31a
        00000000`0fb7e960 00000000`02bad4e8 sqlservr!CSbTransmitter::BeginTransmitterThread+0x9
        00000000`0fb7e990 00000000`02bad7d9 sqlservr!CSbTask::TaskStart+0x278
        00000000`0fb7fac0 00000000`015c483e sqlservr!CSbTask::BeginTaskStart+0x9
        00000000`0fb7faf0 00000000`015c4ad9 sqlservr!SOS_Task::Param::Execute+0xee
        00000000`0fb7fc00 00000000`015bb254 sqlservr!SOS_Scheduler::RunTask+0xc9
        00000000`0fb7fc90 00000000`014d4687 sqlservr!SOS_Scheduler::ProcessTasks+0xb4
        00000000`0fb7fd00 00000000`017be7b9 sqlservr!SchedulerManager::WorkerEntryPoint+0xe7
        00000000`0fb7fda0 00000000`017be585 sqlservr!SystemThread::RunWorker+0x59
        00000000`0fb7fde0 00000000`017eade8 sqlservr!SystemThreadDispatcher::ProcessWorker+0xb5
        00000000`0fb7fe80 00000000`781337d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x128
        00000000`0fb7ff20 000007ff`fff77498 msvcr80!_callthreadstartex+0x17
        00000000`0fb7ff28 00000000`00573000 0x7ff`fff77498
        00000000`0fb7ff30 00000000`00573000 0x573000
        00000000`0fb7ff38 00000000`005bd7a0 0x573000
        00000000`0fb7ff40 00000000`78133810 0x5bd7a0
        00000000`0fb7ff48 00000000`78133894 msvcr80!_threadstartex
        00000000`0fb7ff50 00000000`781e95c0 msvcr80!_threadstartex+0x84
        00000000`0fb7ff58 00000000`00573000 msvcr80!__initialmbcinfo
        00000000`0fb7ff60 00000000`00000000 0x573000

        25 Id: 2064.26ec Suspend: 1 Teb: 000007ff`fff74000 Unfrozen
        Child-SP RetAddr Call Site
        00000000`0fd8f828 00000000`77d704ef ntdll!ZwWaitForSingleObject+0xa
        00000000`0fd8f830 00000000`015d6b4e kernel32!WaitForSingleObjectEx+0x130
        00000000`0fd8f8d0 00000000`015cf3f7 sqlservr!SOS_Scheduler::SwitchContext+0x71e
        00000000`0fd8fbc0 00000000`015baf7e sqlservr!SOS_Scheduler::SuspendNonPreemptive+0x67
        00000000`0fd8fc00 00000000`015bb212 sqlservr!WorkDispatcher::DequeueTask+0x10e
        00000000`0fd8fc90 00000000`014d4687 sqlservr!SOS_Scheduler::ProcessTasks+0x72
        00000000`0fd8fd00 00000000`017be7b9 sqlservr!SchedulerManager::WorkerEntryPoint+0xe7
        00000000`0fd8fda0 00000000`017be585 sqlservr!SystemThread::RunWorker+0x59
        00000000`0fd8fde0 00000000`017eade8 sqlservr!SystemThreadDispatcher::ProcessWorker+0xb5
        00000000`0fd8fe80 00000000`781337d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x128
        00000000`0fd8ff20 000007ff`fff75498 msvcr80!_callthreadstartex+0x17
        00000000`0fd8ff28 00000000`00573000 0x7ff`fff75498
        00000000`0fd8ff30 00000000`00573000 0x573000
        00000000`0fd8ff38 00000000`005bd7a0 0x573000
        00000000`0fd8ff40 00000000`78133810 0x5bd7a0
        00000000`0fd8ff48 00000000`78133894 msvcr80!_threadstartex
        00000000`0fd8ff50 00000000`781e95c0 msvcr80!_threadstartex+0x84
        00000000`0fd8ff58 00000000`00573000 msvcr80!__initialmbcinfo
        00000000`0fd8ff60 00000000`00000000 0x573000

        26 Id: 2064.1d00 Suspend: 1 Teb: 000007ff`fff4e000 Unfrozen
        Child-SP RetAddr Call Site
        00000000`12dacf08 00000000`77d44efb ntdll!NtSignalAndWaitForSingleObject+0xa
        00000000`12dacf10 00000000`015d674c kernel32!SignalObjectAndWait+0x133
        00000000`12dacfc0 00000000`015d0497 sqlservr!SOS_Scheduler::SwitchContext+0x31c
        00000000`12dad2b0 00000000`015abe00 sqlservr!SOS_Scheduler::Suspend+0x97
        00000000`12dad2f0 00000000`0159fe3e sqlservr!SOS_Event::Wait+0x150
        00000000`12dad350 00000000`015e4cc6 sqlservr!LockOwner::Sleep+0xde
        00000000`12dad3d0 00000000`015d7547 sqlservr!lck_lockInternal+0xe36
        00000000`12dad560 00000000`015d08a5 sqlservr!RowsetLockCache::GetTableLock+0x1b7
        00000000`12dad6a0 00000000`0160861c sqlservr!SMD::LockObjectAndCheckVersion+0x105
        00000000`12dad760 00000000`016100d3 sqlservr!CXStmtDML::XretDMLExecute+0xd1c
        00000000`12dad8f0 00000000`015ce649 sqlservr!CMsqlExecContext::ExecuteStmts+0xae3
        00000000`12dadac0 00000000`015cc59c sqlservr!CMsqlExecContext::FExecute+0x429
        00000000`12dadc10 00000000`014c3165 sqlservr!CSQLSource::Execute+0x36c
        00000000`12dadd60 00000000`014c2fa2 sqlservr!CStmtExecProc::XretLocalExec+0x125
        00000000`12daddf0 00000000`0185c990 sqlservr!CStmtExecProc::XretExecExecute+0x132
        00000000`12dae4d0 00000000`0160f98e sqlservr!CXStmtExec::XretExecute+0x20
        00000000`12dae510 00000000`015ce649 sqlservr!CMsqlExecContext::ExecuteStmts+0x39e
        00000000`12dae6e0 00000000`015cc59c sqlservr!CMsqlExecContext::FExecute+0x429
        00000000`12dae830 00000000`014c3165 sqlservr!CSQLSource::Execute+0x36c
        00000000`12dae980 00000000`014c2fa2 sqlservr!CStmtExecProc::XretLocalExec+0x125
        00000000`12daea10 00000000`0185c990 sqlservr!CStmtExecProc::XretExecExecute+0x132
        00000000`12daf0f0 00000000`0160f98e sqlservr!CXStmtExec::XretExecute+0x20
        00000000`12daf130 00000000`015ce649 sqlservr!CMsqlExecContext::ExecuteStmts+0x39e
        00000000`12daf300 00000000`015cc59c sqlservr!CMsqlExecContext::FExecute+0x429
        00000000`12daf450 00000000`015cb332 sqlservr!CSQLSource::Execute+0x36c
        00000000`12daf5a0 00000000`015cc03e sqlservr!process_request+0x312
        00000000`12daf830 00000000`015c483e sqlservr!process_commands+0x40e
        00000000`12dafaf0 00000000`015c4ad9 sqlservr!SOS_Task::Param::Execute+0xee
        00000000`12dafc00 00000000`015bb254 sqlservr!SOS_Scheduler::RunTask+0xc9
        00000000`12dafc90 00000000`014d4687 sqlservr!SOS_Scheduler::ProcessTasks+0xb4
        00000000`12dafd00 00000000`017be7b9 sqlservr!SchedulerManager::WorkerEntryPoint+0xe7
        00000000`12dafda0 00000000`017be585 sqlservr!SystemThread::RunWorker+0x59

        27 Id: 2064.d4c Suspend: 1 Teb: 000007ff`fff16000 Unfrozen
        Child-SP RetAddr Call Site
        00000000`16e1eee8 00000000`77d704ef ntdll!ZwWaitForSingleObject+0xa
        00000000`16e1eef0 00000000`53c4ae3f kernel32!WaitForSingleObjectEx+0x130
        00000000`16e1ef90 00000000`781335b7 XPStar90!SQLAgentMonitorThread+0x65f
        00000000`16e1ff20 00000000`005f39b0 msvcr80!_callthreadstart+0x17
        00000000`16e1ff28 00000000`005f39b0 0x5f39b0
        00000000`16e1ff30 00000000`00000000 0x5f39b0

        28 Id: 2064.2650 Suspend: 1 Teb: 000007ff`fff0e000 Unfrozen
        Child-SP RetAddr Call Site
        00000000`178afea8 00000000`77d6b940 ntdll!ZwRemoveIoCompletion+0xa
        00000000`178afeb0 00000000`338186c7 kernel32!GetQueuedCompletionStatus+0x50
        00000000`178aff20 00000000`77d6b70a sqlncli!SNIAsyncWait+0xa1
        00000000`178aff80 00000000`00000000 kernel32!BaseThreadStart+0x3a

        29 Id: 2064.21c0 Suspend: 1 Teb: 000007ff`ffe16000 Unfrozen
        Child-SP RetAddr Call Site
        00000000`2847fc78 00000000`77d704ef ntdll!ZwWaitForSingleObject+0xa
        00000000`2847fc80 000007ff`57c87140 kernel32!WaitForSingleObjectEx+0x130
        00000000`2847fd20 00000000`77d6b70a comsvcs!PingThread+0x145
        00000000`2847ff80 00000000`00000000 kernel32!BaseThreadStart+0x3a

        30 Id: 2064.1b00 Suspend: 1 Teb: 000007ff`ffe12000 Unfrozen
        Child-SP RetAddr Call Site
        00000000`2be1fe58 000007ff`7e269cc8 ntdll!NtWaitForMultipleObjects+0xa
        00000000`2be1fe60 00000000`77d6b70a winmm!timeThread+0xbe
        00000000`2be1ff80 00000000`00000000 kernel32!BaseThreadStart+0x3a

        31 Id: 2064.105c Suspend: 1 Teb: 000007ff`fff6e000 Unfrozen
        Child-SP RetAddr Call Site
        00000000`10b0f828 00000000`77d704ef ntdll!ZwWaitForSingleObject+0xa
        00000000`10b0f830 00000000`015d6b4e kernel32!WaitForSingleObjectEx+0x130
        00000000`10b0f8d0 00000000`015cf3f7 sqlservr!SOS_Scheduler::SwitchContext+0x71e
        00000000`10b0fbc0 00000000`015baf7e sqlservr!SOS_Scheduler::SuspendNonPreemptive+0x67
        00000000`10b0fc00 00000000`015bb212 sqlservr!WorkDispatcher::DequeueTask+0x10e
        00000000`10b0fc90 00000000`014d4687 sqlservr!SOS_Scheduler::ProcessTasks+0x72
        00000000`10b0fd00 00000000`017be7b9 sqlservr!SchedulerManager::WorkerEntryPoint+0xe7
        00000000`10b0fda0 00000000`017be585 sqlservr!SystemThread::RunWorker+0x59
        00000000`10b0fde0 00000000`017eade8 sqlservr!SystemThreadDispatcher::ProcessWorker+0xb5
        00000000`10b0fe80 00000000`781337d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x128
        00000000`10b0ff20 000007ff`fff6f498 msvcr80!_callthreadstartex+0x17
        00000000`10b0ff28 00000000`005f96c0 0x7ff`fff6f498
        00000000`10b0ff30 00000000`005f96c0 0x5f96c0
        00000000`10b0ff38 00000000`005bd7a0 0x5f96c0
        00000000`10b0ff40 00000000`78133810 0x5bd7a0
        00000000`10b0ff48 00000000`78133894 msvcr80!_threadstartex
        00000000`10b0ff50 00000000`781e95c0 msvcr80!_threadstartex+0x84
        00000000`10b0ff58 00000000`005f96c0 msvcr80!__initialmbcinfo
        00000000`10b0ff60 00000000`00000000 0x5f96c0

        32 Id: 2064.e18 Suspend: 1 Teb: 000007ff`fff6c000 Unfrozen
        Child-SP RetAddr Call Site
        00000000`10d1fcf8 00000000`77d704ef ntdll!ZwWaitForSingleObject+0xa
        00000000`10d1fd00 00000000`014f822f kernel32!WaitForSingleObjectEx+0x130
        00000000`10d1fda0 00000000`017be634 sqlservr!SystemThread::Suspend+0x1f
        00000000`10d1fde0 00000000`017eade8 sqlservr!SystemThreadDispatcher::ProcessWorker+0x164
        00000000`10d1fe80 00000000`781337d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x128
        00000000`10d1ff20 000007ff`fff6d498 msvcr80!_callthreadstartex+0x17
        00000000`10d1ff28 00000000`005f96c0 0x7ff`fff6d498
        00000000`10d1ff30 00000000`005f96c0 0x5f96c0
        00000000`10d1ff38 00000000`006134f0 0x5f96c0
        00000000`10d1ff40 00000000`78133810 0x6134f0
        00000000`10d1ff48 00000000`78133894 msvcr80!_threadstartex
        00000000`10d1ff50 00000000`781e95c0 msvcr80!_threadstartex+0x84
        00000000`10d1ff58 00000000`005f96c0 msvcr80!__initialmbcinfo
        00000000`10d1ff60 00000000`00000000 0x5f96c0

        33 Id: 2064.1430 Suspend: 1 Teb: 000007ff`fff62000 Unfrozen
        Child-SP RetAddr Call Site
        00000000`13bed048 00000000`77d44efb ntdll!NtSignalAndWaitForSingleObject+0xa
        00000000`13bed050 00000000`015d674c kernel32!SignalObjectAndWait+0x133
        00000000`13bed100 00000000`015d0497 sqlservr!SOS_Scheduler::SwitchContext+0x31c
        00000000`13bed3f0 00000000`015abe00 sqlservr!SOS_Scheduler::Suspend+0x97
        00000000`13bed430 00000000`0159fe3e sqlservr!SOS_Event::Wait+0x150
        00000000`13bed490 00000000`015e4cc6 sqlservr!LockOwner::Sleep+0xde
        00000000`13bed510 00000000`02383d0f sqlservr!lck_lockInternal+0xe36
        00000000`13bed6a0 00000000`0238451b sqlservr!lck_applockLock+0x21f
        00000000`13bed7b0 00000000`02648573 sqlservr!SpUserlock+0x67b
        00000000`13bed920 00000000`02648aea sqlservr!CSpecProc::ExecuteSpecial+0x583
        00000000`13beda50 00000000`01adefc2 sqlservr!CXProc::Execute+0x12a
        00000000`13bedc10 00000000`014c3165 sqlservr!alloca_probe+0x20c612
        00000000`13bedd60 00000000`014c2fa2 sqlservr!CStmtExecProc::XretLocalExec+0x125
        00000000`13beddf0 00000000`0185c990 sqlservr!CStmtExecProc::XretExecExecute+0x132
        00000000`13bee4d0 00000000`0160f98e sqlservr!CXStmtExec::XretExecute+0x20
        00000000`13bee510 00000000`015ce649 sqlservr!CMsqlExecContext::ExecuteStmts+0x39e
        00000000`13bee6e0 00000000`015cc59c sqlservr!CMsqlExecContext::FExecute+0x429
        00000000`13bee830 00000000`014c3165 sqlservr!CSQLSource::Execute+0x36c
        00000000`13bee980 00000000`014c2fa2 sqlservr!CStmtExecProc::XretLocalExec+0x125
        00000000`13beea10 00000000`0185c990 sqlservr!CStmtExecProc::XretExecExecute+0x132
        00000000`13bef0f0 00000000`0160f98e sqlservr!CXStmtExec::XretExecute+0x20
        00000000`13bef130 00000000`015ce649 sqlservr!CMsqlExecContext::ExecuteStmts+0x39e
        00000000`13bef300 00000000`015cc59c sqlservr!CMsqlExecContext::FExecute+0x429
        00000000`13bef450 00000000`015cb332 sqlservr!CSQLSource::Execute+0x36c
        00000000`13bef5a0 00000000`015cbdf4 sqlservr!process_request+0x312
        00000000`13bef830 00000000`015c483e sqlservr!process_commands+0x1c4
        00000000`13befaf0 00000000`015c4ad9 sqlservr!SOS_Task::Param::Execute+0xee
        00000000`13befc00 00000000`015bb254 sqlservr!SOS_Scheduler::RunTask+0xc9
        00000000`13befc90 00000000`014d4687 sqlservr!SOS_Scheduler::ProcessTasks+0xb4
        00000000`13befd00 00000000`017be7b9 sqlservr!SchedulerManager::WorkerEntryPoint+0xe7
        00000000`13befda0 00000000`017be585 sqlservr!SystemThread::RunWorker+0x59
        00000000`13befde0 00000000`017eade8 sqlservr!SystemThreadDispatcher::ProcessWorker+0xb5

        34 Id: 2064.d70 Suspend: 1 Teb: 000007ff`fffd7000 Unfrozen
        Child-SP RetAddr Call Site
        00000000`107bfb98 000007ff`7fd70161 ntdll!ZwReplyWaitReceivePortEx+0xa
        00000000`107bfba0 000007ff`7fd45389 rpcrt4!LRPC_ADDRESS::ReceiveLotsaCalls+0x2a5
        00000000`107bfeb0 000007ff`7fd65ab6 rpcrt4!RecvLotsaCallsWrapper+0x9
        00000000`107bfee0 000007ff`7fd65e71 rpcrt4!BaseCachedThreadRoutine+0xde
        00000000`107bff50 00000000`77d6b70a rpcrt4!ThreadStartRoutine+0x21
        00000000`107bff80 00000000`00000000 kernel32!BaseThreadStart+0x3a

        35 Id: 2064.17d8 Suspend: 1 Teb: 000007ff`fff54000 Unfrozen
        Child-SP RetAddr Call Site
        00000000`1463d048 00000000`77d44efb ntdll!NtSignalAndWaitForSingleObject+0xa
        00000000`1463d050 00000000`015d674c kernel32!SignalObjectAndWait+0x133
        00000000`1463d100 00000000`015d0497 sqlservr!SOS_Scheduler::SwitchContext+0x31c
        00000000`1463d3f0 00000000`015abe00 sqlservr!SOS_Scheduler::Suspend+0x97
        00000000`1463d430 00000000`0159fe3e sqlservr!SOS_Event::Wait+0x150
        00000000`1463d490 00000000`015e4cc6 sqlservr!LockOwner::Sleep+0xde
        00000000`1463d510 00000000`02383d0f sqlservr!lck_lockInternal+0xe36
        00000000`1463d6a0 00000000`0238451b sqlservr!lck_applockLock+0x21f
        00000000`1463d7b0 00000000`02648573 sqlservr!SpUserlock+0x67b
        00000000`1463d920 00000000`02648aea sqlservr!CSpecProc::ExecuteSpecial+0x583
        00000000`1463da50 00000000`01adefc2 sqlservr!CXProc::Execute+0x12a
        00000000`1463dc10 00000000`014c3165 sqlservr!alloca_probe+0x20c612
        00000000`1463dd60 00000000`014c2fa2 sqlservr!CStmtExecProc::XretLocalExec+0x125
        00000000`1463ddf0 00000000`0185c990 sqlservr!CStmtExecProc::XretExecExecute+0x132
        00000000`1463e4d0 00000000`0160f98e sqlservr!CXStmtExec::XretExecute+0x20
        00000000`1463e510 00000000`015ce649 sqlservr!CMsqlExecContext::ExecuteStmts+0x39e
        00000000`1463e6e0 00000000`015cc59c sqlservr!CMsqlExecContext::FExecute+0x429
        00000000`1463e830 00000000`014c3165 sqlservr!CSQLSource::Execute+0x36c
        00000000`1463e980 00000000`014c2fa2 sqlservr!CStmtExecProc::XretLocalExec+0x125
        00000000`1463ea10 00000000`0185c990 sqlservr!CStmtExecProc::XretExecExecute+0x132
        00000000`1463f0f0 00000000`0160f98e sqlservr!CXStmtExec::XretExecute+0x20
        00000000`1463f130 00000000`015ce649 sqlservr!CMsqlExecContext::ExecuteStmts+0x39e
        00000000`1463f300 00000000`015cc59c sqlservr!CMsqlExecContext::FExecute+0x429
        00000000`1463f450 00000000`015cb332 sqlservr!CSQLSource::Execute+0x36c
        00000000`1463f5a0 00000000`015cbdf4 sqlservr!process_request+0x312
        00000000`1463f830 00000000`015c483e sqlservr!process_commands+0x1c4
        00000000`1463faf0 00000000`015c4ad9 sqlservr!SOS_Task::Param::Execute+0xee
        00000000`1463fc00 00000000`015bb254 sqlservr!SOS_Scheduler::RunTask+0xc9
        00000000`1463fc90 00000000`014d4687 sqlservr!SOS_Scheduler::ProcessTasks+0xb4
        00000000`1463fd00 00000000`017be7b9 sqlservr!SchedulerManager::WorkerEntryPoint+0xe7
        00000000`1463fda0 00000000`017be585 sqlservr!SystemThread::RunWorker+0x59
        00000000`1463fde0 00000000`017eade8 sqlservr!SystemThreadDispatcher::ProcessWorker+0xb5

        36 Id: 2064.2538 Suspend: 1 Teb: 000007ff`fff08000 Unfrozen
        Child-SP RetAddr Call Site
        00000000`1a43d048 00000000`77d44efb ntdll!NtSignalAndWaitForSingleObject+0xa
        00000000`1a43d050 00000000`015d674c kernel32!SignalObjectAndWait+0x133
        00000000`1a43d100 00000000`015d0497 sqlservr!SOS_Scheduler::SwitchContext+0x31c
        00000000`1a43d3f0 00000000`015abe00 sqlservr!SOS_Scheduler::Suspend+0x97
        00000000`1a43d430 00000000`0159fe3e sqlservr!SOS_Event::Wait+0x150
        00000000`1a43d490 00000000`015e4cc6 sqlservr!LockOwner::Sleep+0xde
        00000000`1a43d510 00000000`02383d0f sqlservr!lck_lockInternal+0xe36
        00000000`1a43d6a0 00000000`0238451b sqlservr!lck_applockLock+0x21f
        00000000`1a43d7b0 00000000`02648573 sqlservr!SpUserlock+0x67b
        00000000`1a43d920 00000000`02648aea sqlservr!CSpecProc::ExecuteSpecial+0x583
        00000000`1a43da50 00000000`01adefc2 sqlservr!CXProc::Execute+0x12a
        00000000`1a43dc10 00000000`014c3165 sqlservr!alloca_probe+0x20c612
        00000000`1a43dd60 00000000`014c2fa2 sqlservr!CStmtExecProc::XretLocalExec+0x125
        00000000`1a43ddf0 00000000`0185c990 sqlservr!CStmtExecProc::XretExecExecute+0x132
        00000000`1a43e4d0 00000000`0160f98e sqlservr!CXStmtExec::XretExecute+0x20
        00000000`1a43e510 00000000`015ce649 sqlservr!CMsqlExecContext::ExecuteStmts+0x39e
        00000000`1a43e6e0 00000000`015cc59c sqlservr!CMsqlExecContext::FExecute+0x429
        00000000`1a43e830 00000000`014c3165 sqlservr!CSQLSource::Execute+0x36c
        00000000`1a43e980 00000000`014c2fa2 sqlservr!CStmtExecProc::XretLocalExec+0x125
        00000000`1a43ea10 00000000`0185c990 sqlservr!CStmtExecProc::XretExecExecute+0x132
        00000000`1a43f0f0 00000000`0160f98e sqlservr!CXStmtExec::XretExecute+0x20
        00000000`1a43f130 00000000`015ce649 sqlservr!CMsqlExecContext::ExecuteStmts+0x39e
        00000000`1a43f300 00000000`015cc59c sqlservr!CMsqlExecContext::FExecute+0x429
        00000000`1a43f450 00000000`015cb332 sqlservr!CSQLSource::Execute+0x36c
        00000000`1a43f5a0 00000000`015cbdf4 sqlservr!process_request+0x312
        00000000`1a43f830 00000000`015c483e sqlservr!process_commands+0x1c4
        00000000`1a43faf0 00000000`015c4ad9 sqlservr!SOS_Task::Param::Execute+0xee
        00000000`1a43fc00 00000000`015bb254 sqlservr!SOS_Scheduler::RunTask+0xc9
        00000000`1a43fc90 00000000`014d4687 sqlservr!SOS_Scheduler::ProcessTasks+0xb4
        00000000`1a43fd00 00000000`017be7b9 sqlservr!SchedulerManager::WorkerEntryPoint+0xe7
        00000000`1a43fda0 00000000`017be585 sqlservr!SystemThread::RunWorker+0x59
        00000000`1a43fde0 00000000`017eade8 sqlservr!SystemThreadDispatcher::ProcessWorker+0xb5

        37 Id: 2064.13c4 Suspend: 1 Teb: 000007ff`ffeee000 Unfrozen
        Child-SP RetAddr Call Site
        00000000`1be3d048 00000000`77d44efb ntdll!NtSignalAndWaitForSingleObject+0xa
        00000000`1be3d050 00000000`015d674c kernel32!SignalObjectAndWait+0x133
        00000000`1be3d100 00000000`015d0497 sqlservr!SOS_Scheduler::SwitchContext+0x31c
        00000000`1be3d3f0 00000000`015abe00 sqlservr!SOS_Scheduler::Suspend+0x97
        00000000`1be3d430 00000000`0159fe3e sqlservr!SOS_Event::Wait+0x150
        00000000`1be3d490 00000000`015e4cc6 sqlservr!LockOwner::Sleep+0xde
        00000000`1be3d510 00000000`02383d0f sqlservr!lck_lockInternal+0xe36
        00000000`1be3d6a0 00000000`0238451b sqlservr!lck_applockLock+0x21f
        00000000`1be3d7b0 00000000`02648573 sqlservr!SpUserlock+0x67b
        00000000`1be3d920 00000000`02648aea sqlservr!CSpecProc::ExecuteSpecial+0x583
        00000000`1be3da50 00000000`01adefc2 sqlservr!CXProc::Execute+0x12a
        00000000`1be3dc10 00000000`014c3165 sqlservr!alloca_probe+0x20c612
        00000000`1be3dd60 00000000`014c2fa2 sqlservr!CStmtExecProc::XretLocalExec+0x125
        00000000`1be3ddf0 00000000`0185c990 sqlservr!CStmtExecProc::XretExecExecute+0x132
        00000000`1be3e4d0 00000000`0160f98e sqlservr!CXStmtExec::XretExecute+0x20
        00000000`1be3e510 00000000`015ce649 sqlservr!CMsqlExecContext::ExecuteStmts+0x39e
        00000000`1be3e6e0 00000000`015cc59c sqlservr!CMsqlExecContext::FExecute+0x429
        00000000`1be3e830 00000000`014c3165 sqlservr!CSQLSource::Execute+0x36c
        00000000`1be3e980 00000000`014c2fa2 sqlservr!CStmtExecProc::XretLocalExec+0x125
        00000000`1be3ea10 00000000`0185c990 sqlservr!CStmtExecProc::XretExecExecute+0x132
        00000000`1be3f0f0 00000000`0160f98e sqlservr!CXStmtExec::XretExecute+0x20
        00000000`1be3f130 00000000`015ce649 sqlservr!CMsqlExecContext::ExecuteStmts+0x39e
        00000000`1be3f300 00000000`015cc59c sqlservr!CMsqlExecContext::FExecute+0x429
        00000000`1be3f450 00000000`015cb332 sqlservr!CSQLSource::Execute+0x36c
        00000000`1be3f5a0 00000000`015cbdf4 sqlservr!process_request+0x312
        00000000`1be3f830 00000000`015c483e sqlservr!process_commands+0x1c4
        00000000`1be3faf0 00000000`015c4ad9 sqlservr!SOS_Task::Param::Execute+0xee
        00000000`1be3fc00 00000000`015bb254 sqlservr!SOS_Scheduler::RunTask+0xc9
        00000000`1be3fc90 00000000`014d4687 sqlservr!SOS_Scheduler::ProcessTasks+0xb4
        00000000`1be3fd00 00000000`017be7b9 sqlservr!SchedulerManager::WorkerEntryPoint+0xe7
        00000000`1be3fda0 00000000`017be585 sqlservr!SystemThread::RunWorker+0x59
        00000000`1be3fde0 00000000`017eade8 sqlservr!SystemThreadDispatcher::ProcessWorker+0xb5

        38 Id: 2064.229c Suspend: 1 Teb: 000007ff`ffee6000 Unfrozen
        Child-SP RetAddr Call Site
        00000000`1c63d048 00000000`77d44efb ntdll!NtSignalAndWaitForSingleObject+0xa
        00000000`1c63d050 00000000`015d674c kernel32!SignalObjectAndWait+0x133
        00000000`1c63d100 00000000`015d0497 sqlservr!SOS_Scheduler::SwitchContext+0x31c
        00000000`1c63d3f0 00000000`015abe00 sqlservr!SOS_Scheduler::Suspend+0x97
        00000000`1c63d430 00000000`0159fe3e sqlservr!SOS_Event::Wait+0x150
        00000000`1c63d490 00000000`015e4cc6 sqlservr!LockOwner::Sleep+0xde
        00000000`1c63d510 00000000`02383d0f sqlservr!lck_lockInternal+0xe36
        00000000`1c63d6a0 00000000`0238451b sqlservr!lck_applockLock+0x21f
        00000000`1c63d7b0 00000000`02648573 sqlservr!SpUserlock+0x67b
        00000000`1c63d920 00000000`02648aea sqlservr!CSpecProc::ExecuteSpecial+0x583
        00000000`1c63da50 00000000`01adefc2 sqlservr!CXProc::Execute+0x12a
        00000000`1c63dc10 00000000`014c3165 sqlservr!alloca_probe+0x20c612
        00000000`1c63dd60 00000000`014c2fa2 sqlservr!CStmtExecProc::XretLocalExec+0x125
        00000000`1c63ddf0 00000000`0185c990 sqlservr!CStmtExecProc::XretExecExecute+0x132
        00000000`1c63e4d0 00000000`0160f98e sqlservr!CXStmtExec::XretExecute+0x20
        00000000`1c63e510 00000000`015ce649 sqlservr!CMsqlExecContext::ExecuteStmts+0x39e
        00000000`1c63e6e0 00000000`015cc59c sqlservr!CMsqlExecContext::FExecute+0x429
        00000000`1c63e830 00000000`014c3165 sqlservr!CSQLSource::Execute+0x36c
        00000000`1c63e980 00000000`014c2fa2 sqlservr!CStmtExecProc::XretLocalExec+0x125
        00000000`1c63ea10 00000000`0185c990 sqlservr!CStmtExecProc::XretExecExecute+0x132
        00000000`1c63f0f0 00000000`0160f98e sqlservr!CXStmtExec::XretExecute+0x20
        00000000`1c63f130 00000000`015ce649 sqlservr!CMsqlExecContext::ExecuteStmts+0x39e
        00

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  49. Sam Bokam said

    Could you check this stack trace and let me know what was going wrong:

    0:004> ~*kL20

    0 Id: 1b90.2178 Suspend: 0 Teb: 000007ff`fffdc000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`0031edb8 00000000`7708615a ntdll!ZwReadFile+0xa
    00000000`0031edc0 000007fe`fdb1fc9a kernel32!ReadFile+0x8a
    00000000`0031ee50 000007fe`fdb1fa3b advapi32!ScGetPipeInput+0x3a
    00000000`0031eea0 000007fe`fdb1e00d advapi32!ScDispatcherLoop+0x9a
    00000000`0031efa0 00000000`009ddd46 advapi32!StartServiceCtrlDispatcherW+0x176
    00000000`0031f240 00000000`00d25a70 sqlservr!wmain+0x356
    00000000`0031f990 00000000`7708b1bd sqlservr!NtCurrentTeb+0x1a0
    00000000`0031f9c0 00000000`77296861 kernel32!BaseThreadInitThunk+0xd
    00000000`0031f9f0 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    1 Id: 1b90.2214 Suspend: 0 Teb: 000007ff`fffd6000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`1a9bf3a8 00000000`770e4327 ntdll!ZwSignalAndWaitForSingleObject+0xa
    00000000`1a9bf3b0 00000000`004ad24d kernel32!SignalObjectAndWait+0x117
    00000000`1a9bf470 00000000`00a47cc3 sqlservr!SOS_Scheduler::SwitchContext+0x84d
    00000000`1a9bf710 00000000`00499dab sqlservr!SOS_Scheduler::Idle+0xa2
    00000000`1a9bf740 00000000`0049de0a sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`1a9bf860 00000000`00499959 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`1a9bf8f0 00000000`00a3b760 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`1a9bf960 00000000`00a3bab0 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`1a9bfa20 00000000`00a39620 sqlservr!SystemThread::RunWorker+0x60
    00000000`1a9bfa50 00000000`00a3b15f sqlservr!SystemThreadDispatcher::ProcessWorker+0x12c
    00000000`1a9bfae0 00000000`751d37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`1a9bfb70 000007ff`fffd7488 msvcr80!_callthreadstartex+0x17
    00000000`1a9bfb78 00000000`000dee20 0x7ff`fffd7488
    00000000`1a9bfb80 00000000`00000000 0xdee20

    2 Id: 1b90.7fc Suspend: 0 Teb: 000007ff`fffd4000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`1abbc4e8 00000000`7709b240 ntdll!NtWaitForSingleObject+0xa
    00000000`1abbc4f0 00000000`004ace32 kernel32!WaitForSingleObjectEx+0x9c
    00000000`1abbc5b0 00000000`004946a5 sqlservr!SOS_Scheduler::SwitchContext+0x623
    00000000`1abbc850 00000000`00493c06 sqlservr!SOS_Scheduler::SuspendNonPreemptive+0xc5
    00000000`1abbc890 00000000`004a99de sqlservr!EventInternal<Spinlock >::Wait+0x436
    00000000`1abbce80 00000000`0291f238 sqlservr!BPool::LazyWriter+0x842
    00000000`1abbf360 00000000`00499dab sqlservr!lazywriter+0x2c8
    00000000`1abbf850 00000000`0049de0a sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`1abbf970 00000000`00499959 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`1abbfa00 00000000`00a3b760 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`1abbfa70 00000000`00a3bab0 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`1abbfb30 00000000`00a39620 sqlservr!SystemThread::RunWorker+0x60
    00000000`1abbfb60 00000000`00a3b15f sqlservr!SystemThreadDispatcher::ProcessWorker+0x12c
    00000000`1abbfbf0 00000000`751d37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`1abbfc80 000007ff`fffd5488 msvcr80!_callthreadstartex+0x17
    00000000`1abbfc88 00000000`000dee20 0x7ff`fffd5488
    00000000`1abbfc90 00000000`00000000 0xdee20

    3 Id: 1b90.2338 Suspend: 0 Teb: 000007ff`fffae000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`1af5f6e8 00000000`770e4327 ntdll!ZwSignalAndWaitForSingleObject+0xa
    00000000`1af5f6f0 00000000`004ad24d kernel32!SignalObjectAndWait+0x117
    00000000`1af5f7b0 00000000`00a47cc3 sqlservr!SOS_Scheduler::SwitchContext+0x84d
    00000000`1af5fa50 00000000`00499dab sqlservr!SOS_Scheduler::Idle+0xa2
    00000000`1af5fa80 00000000`0049de0a sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`1af5fba0 00000000`00499959 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`1af5fc30 00000000`00a3b760 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`1af5fca0 00000000`00a3bab0 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`1af5fd60 00000000`00a39620 sqlservr!SystemThread::RunWorker+0x60
    00000000`1af5fd90 00000000`00a3b15f sqlservr!SystemThreadDispatcher::ProcessWorker+0x12c
    00000000`1af5fe20 00000000`751d37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`1af5feb0 000007ff`fffaf488 msvcr80!_callthreadstartex+0x17
    00000000`1af5feb8 00000000`000dee20 0x7ff`fffaf488
    00000000`1af5fec0 00000000`00000000 0xdee20

    # 4 Id: 1b90.9d8 Suspend: 0 Teb: 000007ff`fffac000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`1b1cd3a8 00000000`7709b240 ntdll!NtWaitForSingleObject+0xa
    00000000`1b1cd3b0 00000000`01249929 kernel32!WaitForSingleObjectEx+0x9c
    00000000`1b1cd470 00000000`012492eb sqlservr!CDmpDump::DumpInternal+0x4d9
    00000000`1b1cd570 00000000`01c301a0 sqlservr!CDmpDump::Dump+0x3b
    00000000`1b1cd5c0 00000000`01cea6ae sqlservr!SQLDumperLibraryInvoke+0x1a0
    00000000`1b1cd5f0 00000000`01e3d810 sqlservr!CImageHelper::DoMiniDump+0x3ce
    00000000`1b1cd7d0 00000000`01e47b4b sqlservr!stackTrace+0x710
    00000000`1b1ced00 00000000`01c08207 sqlservr!SQL_SOSDeadlockSchedulersCallback+0xab
    00000000`1b1ced70 00000000`0156c44f sqlservr!SOS_OS::ExecuteDeadlockSchedulerCallbacks+0xb7
    00000000`1b1cf030 00000000`004c23b0 sqlservr!alloca_probe+0x40c3d2
    00000000`1b1cf1c0 00000000`02bcb189 sqlservr!SchedulerMonitor::Run+0x101
    00000000`1b1cf300 00000000`00499dab sqlservr!SchedulerMonitor::EntryPoint+0x9
    00000000`1b1cf330 00000000`0049de0a sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`1b1cf450 00000000`00499959 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`1b1cf4e0 00000000`00a3b760 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`1b1cf550 00000000`00a3bab0 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`1b1cf610 00000000`00a39620 sqlservr!SystemThread::RunWorker+0x60
    00000000`1b1cf640 00000000`00a3b15f sqlservr!SystemThreadDispatcher::ProcessWorker+0x12c
    00000000`1b1cf6d0 00000000`751d37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`1b1cf760 000007ff`fffad488 msvcr80!_callthreadstartex+0x17
    00000000`1b1cf768 00000000`000dee20 0x7ff`fffad488
    00000000`1b1cf770 00000000`00000000 0xdee20

    5 Id: 1b90.123c Suspend: 0 Teb: 000007ff`fffaa000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`1b3cf488 00000000`770e4327 ntdll!ZwSignalAndWaitForSingleObject+0xa
    00000000`1b3cf490 00000000`004ad24d kernel32!SignalObjectAndWait+0x117
    00000000`1b3cf550 00000000`00a47cc3 sqlservr!SOS_Scheduler::SwitchContext+0x84d
    00000000`1b3cf7f0 00000000`00499dab sqlservr!SOS_Scheduler::Idle+0xa2
    00000000`1b3cf820 00000000`0049de0a sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`1b3cf940 00000000`00499959 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`1b3cf9d0 00000000`00a3b760 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`1b3cfa40 00000000`00a3bab0 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`1b3cfb00 00000000`00a39620 sqlservr!SystemThread::RunWorker+0x60
    00000000`1b3cfb30 00000000`00a3b15f sqlservr!SystemThreadDispatcher::ProcessWorker+0x12c
    00000000`1b3cfbc0 00000000`751d37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`1b3cfc50 000007ff`fffab488 msvcr80!_callthreadstartex+0x17
    00000000`1b3cfc58 00000000`000dee20 0x7ff`fffab488
    00000000`1b3cfc60 00000000`00000000 0xdee20

    6 Id: 1b90.1a88 Suspend: 0 Teb: 000007ff`fffa6000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`1b91f378 00000000`770e4327 ntdll!ZwSignalAndWaitForSingleObject+0xa
    00000000`1b91f380 00000000`004ad24d kernel32!SignalObjectAndWait+0x117
    00000000`1b91f440 00000000`00a47cc3 sqlservr!SOS_Scheduler::SwitchContext+0x84d
    00000000`1b91f6e0 00000000`00499dab sqlservr!SOS_Scheduler::Idle+0xa2
    00000000`1b91f710 00000000`0049de0a sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`1b91f830 00000000`00499959 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`1b91f8c0 00000000`00a3b760 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`1b91f930 00000000`00a3bab0 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`1b91f9f0 00000000`00a39620 sqlservr!SystemThread::RunWorker+0x60
    00000000`1b91fa20 00000000`00a3b15f sqlservr!SystemThreadDispatcher::ProcessWorker+0x12c
    00000000`1b91fab0 00000000`751d37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`1b91fb40 000007ff`fffa7488 msvcr80!_callthreadstartex+0x17
    00000000`1b91fb48 00000000`000dee20 0x7ff`fffa7488
    00000000`1b91fb50 00000000`00000000 0xdee20

    7 Id: 1b90.fdc Suspend: 0 Teb: 000007ff`fffa2000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`1bdef278 00000000`770e4327 ntdll!ZwSignalAndWaitForSingleObject+0xa
    00000000`1bdef280 00000000`004ad24d kernel32!SignalObjectAndWait+0x117
    00000000`1bdef340 00000000`00a47cc3 sqlservr!SOS_Scheduler::SwitchContext+0x84d
    00000000`1bdef5e0 00000000`00499dab sqlservr!SOS_Scheduler::Idle+0xa2
    00000000`1bdef610 00000000`0049de0a sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`1bdef730 00000000`00499959 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`1bdef7c0 00000000`00a3b760 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`1bdef830 00000000`00a3bab0 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`1bdef8f0 00000000`00a39620 sqlservr!SystemThread::RunWorker+0x60
    00000000`1bdef920 00000000`00a3b15f sqlservr!SystemThreadDispatcher::ProcessWorker+0x12c
    00000000`1bdef9b0 00000000`751d37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`1bdefa40 000007ff`fffa3488 msvcr80!_callthreadstartex+0x17
    00000000`1bdefa48 00000000`000dee20 0x7ff`fffa3488
    00000000`1bdefa50 00000000`00000000 0xdee20

    8 Id: 1b90.b08 Suspend: 0 Teb: 000007ff`fffa0000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`1bfedd68 00000000`770e4327 ntdll!ZwSignalAndWaitForSingleObject+0xa
    00000000`1bfedd70 00000000`004ad24d kernel32!SignalObjectAndWait+0x117
    00000000`1bfede30 00000000`004946a5 sqlservr!SOS_Scheduler::SwitchContext+0x84d
    00000000`1bfee0d0 00000000`00493c06 sqlservr!SOS_Scheduler::SuspendNonPreemptive+0xc5
    00000000`1bfee110 00000000`00925f29 sqlservr!EventInternal<Spinlock >::Wait+0x436
    00000000`1bfee700 00000000`00926ee4 sqlservr!EventInternal<Spinlock >::WaitAllowPrematureWakeup+0x59
    00000000`1bfee750 00000000`009271af sqlservr!XchngWait<Spinlock >+0xa4
    00000000`1bfee810 00000000`00926255 sqlservr!CXPort::Open+0xec
    00000000`1bfee860 00000000`0092f62c sqlservr!CXTransLocal::Synchronize+0x1d
    00000000`1bfee890 00000000`0092e635 sqlservr!CQScanHash::ConsumeProbe+0x616
    00000000`1bfee920 00000000`0092e749 sqlservr!CQScanHash::Iterate+0x65
    00000000`1bfee950 00000000`004ce5ca sqlservr!CQScanHash::Open+0x79
    00000000`1bfee990 00000000`00926fc5 sqlservr!CQScanNew::OpenHelper+0x3a
    00000000`1bfee9c0 00000000`009262d3 sqlservr!CQScanXProducerNew::Open+0x35
    00000000`1bfee9f0 00000000`00932f4d sqlservr!FnProducerOpen+0x43
    00000000`1bfeea30 00000000`009336e2 sqlservr!FnProducerThread+0x39d
    00000000`1bfeeb90 00000000`00499dab sqlservr!SubprocEntrypoint+0x622
    00000000`1bfef480 00000000`0049de0a sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`1bfef5a0 00000000`00499959 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`1bfef630 00000000`00a3b760 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`1bfef6a0 00000000`00a3bab0 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`1bfef760 00000000`00a39620 sqlservr!SystemThread::RunWorker+0x60
    00000000`1bfef790 00000000`00a3b15f sqlservr!SystemThreadDispatcher::ProcessWorker+0x12c
    00000000`1bfef820 00000000`751d37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`1bfef8b0 000007ff`fffa1488 msvcr80!_callthreadstartex+0x17
    00000000`1bfef8b8 00000000`000dee20 0x7ff`fffa1488
    00000000`1bfef8c0 00000000`00000000 0xdee20

    9 Id: 1b90.e18 Suspend: 0 Teb: 000007ff`fff9e000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`1c3cf718 00000000`770e4327 ntdll!ZwSignalAndWaitForSingleObject+0xa
    00000000`1c3cf720 00000000`004ad24d kernel32!SignalObjectAndWait+0x117
    00000000`1c3cf7e0 00000000`00a47cc3 sqlservr!SOS_Scheduler::SwitchContext+0x84d
    00000000`1c3cfa80 00000000`00499dab sqlservr!SOS_Scheduler::Idle+0xa2
    00000000`1c3cfab0 00000000`0049de0a sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`1c3cfbd0 00000000`00499959 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`1c3cfc60 00000000`00a3b760 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`1c3cfcd0 00000000`00a3bab0 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`1c3cfd90 00000000`00a39620 sqlservr!SystemThread::RunWorker+0x60
    00000000`1c3cfdc0 00000000`00a3b15f sqlservr!SystemThreadDispatcher::ProcessWorker+0x12c
    00000000`1c3cfe50 00000000`751d37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`1c3cfee0 000007ff`fff9f488 msvcr80!_callthreadstartex+0x17
    00000000`1c3cfee8 00000000`000dee20 0x7ff`fff9f488
    00000000`1c3cfef0 00000000`00000000 0xdee20

    10 Id: 1b90.22a8 Suspend: 0 Teb: 000007ff`fff9c000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`1c68f778 00000000`7708ec0c ntdll!ZwRemoveIoCompletion+0xa
    00000000`1c68f780 00000000`0054b477 kernel32!GetQueuedCompletionStatus+0x48
    00000000`1c68f7e0 00000000`00499dab sqlservr!SOS_Node::ListenOnIOCompletionPort+0x137
    00000000`1c68f970 00000000`0049de0a sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`1c68fa90 00000000`00499959 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`1c68fb20 00000000`00a3b760 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`1c68fb90 00000000`00a3bab0 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`1c68fc50 00000000`00a39620 sqlservr!SystemThread::RunWorker+0x60
    00000000`1c68fc80 00000000`00a3b15f sqlservr!SystemThreadDispatcher::ProcessWorker+0x12c
    00000000`1c68fd10 00000000`751d37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`1c68fda0 000007ff`fff9d488 msvcr80!_callthreadstartex+0x17
    00000000`1c68fda8 00000000`000dee20 0x7ff`fff9d488
    00000000`1c68fdb0 00000000`00000000 0xdee20

    11 Id: 1b90.203c Suspend: 0 Teb: 000007ff`fff9a000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`1ca7f348 00000000`7708af83 ntdll!NtWaitForMultipleObjects+0xa
    00000000`1ca7f350 00000000`77081541 kernel32!WaitForMultipleObjectsEx+0x10b
    00000000`1ca7f460 00000000`01ce43c0 kernel32!WaitForMultipleObjects+0x11
    00000000`1ca7f4a0 00000000`01ce993b sqlservr!XE_DispatcherQueue::Dequeue+0x90
    00000000`1ca7f570 00000000`02c6b389 sqlservr!SOS_DispatcherPool::Dequeue+0x5b
    00000000`1ca7f5a0 00000000`02c6b540 sqlservr!Dispatcher::Run+0x69
    00000000`1ca7f620 00000000`028ca28f sqlservr!XE_Engine::DispatcherEntryPointWithContext+0x50
    00000000`1ca7f6c0 00000000`02c6b615 sqlservr!XESQLSetupThreadContext+0xff
    00000000`1ca7f7a0 00000000`02ab0c8c sqlservr!XE_Engine::DispatcherEntryPoint+0x45
    00000000`1ca7f7e0 00000000`00499dab sqlservr!SOS_DispatcherPool::RunDispatcher+0x1c
    00000000`1ca7f810 00000000`0049de0a sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`1ca7f930 00000000`00499959 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`1ca7f9c0 00000000`00a3b760 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`1ca7fa30 00000000`00a3bab0 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`1ca7faf0 00000000`00a39620 sqlservr!SystemThread::RunWorker+0x60
    00000000`1ca7fb20 00000000`00a3b15f sqlservr!SystemThreadDispatcher::ProcessWorker+0x12c
    00000000`1ca7fbb0 00000000`751d37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`1ca7fc40 000007ff`fff9b488 msvcr80!_callthreadstartex+0x17
    00000000`1ca7fc48 00000000`000dee20 0x7ff`fff9b488
    00000000`1ca7fc50 00000000`00000000 0xdee20

    12 Id: 1b90.22c4 Suspend: 0 Teb: 000007ff`fff98000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`1ccfef78 00000000`7708af83 ntdll!NtWaitForMultipleObjects+0xa
    00000000`1ccfef80 00000000`77081541 kernel32!WaitForMultipleObjectsEx+0x10b
    00000000`1ccff090 00000000`004add6a kernel32!WaitForMultipleObjects+0x11
    00000000`1ccff0d0 00000000`025d8af8 sqlservr!ResourceMonitor::CheckIndicators+0x187
    00000000`1ccff180 00000000`028d3a1b sqlservr!ResourceMonitor::ResourceMonitorTask+0x1b8
    00000000`1ccff2d0 00000000`00499dab sqlservr!SetupResourceMonitorTaskContext+0x11b
    00000000`1ccff610 00000000`0049de0a sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`1ccff730 00000000`00499959 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`1ccff7c0 00000000`00a3b760 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`1ccff830 00000000`00a3bab0 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`1ccff8f0 00000000`00a39620 sqlservr!SystemThread::RunWorker+0x60
    00000000`1ccff920 00000000`00a3b15f sqlservr!SystemThreadDispatcher::ProcessWorker+0x12c
    00000000`1ccff9b0 00000000`751d37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`1ccffa40 000007ff`fff99488 msvcr80!_callthreadstartex+0x17
    00000000`1ccffa48 00000000`053214a0 0x7ff`fff99488
    00000000`1ccffa50 00000000`00000000 0x53214a0

    13 Id: 1b90.20e0 Suspend: 0 Teb: 000007ff`fff96000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`3d6ce6a8 00000000`770e4327 ntdll!ZwSignalAndWaitForSingleObject+0xa
    00000000`3d6ce6b0 00000000`004ad24d kernel32!SignalObjectAndWait+0x117
    00000000`3d6ce770 00000000`004946a5 sqlservr!SOS_Scheduler::SwitchContext+0x84d
    00000000`3d6cea10 00000000`00493c06 sqlservr!SOS_Scheduler::SuspendNonPreemptive+0xc5
    00000000`3d6cea50 00000000`02cf1fab sqlservr!EventInternal<Spinlock >::Wait+0x436
    00000000`3d6cf040 00000000`02d1e459 sqlservr!SignalProc+0x1cb
    00000000`3d6cf2a0 00000000`00499dab sqlservr!StartUp::InitDBMS+0x189
    00000000`3d6cf3e0 00000000`0049de0a sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`3d6cf500 00000000`00499959 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`3d6cf590 00000000`00a3b760 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`3d6cf600 00000000`00a3bab0 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`3d6cf6c0 00000000`00a39620 sqlservr!SystemThread::RunWorker+0x60
    00000000`3d6cf6f0 00000000`00a3b15f sqlservr!SystemThreadDispatcher::ProcessWorker+0x12c
    00000000`3d6cf780 00000000`751d37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`3d6cf810 000007ff`fff97488 msvcr80!_callthreadstartex+0x17
    00000000`3d6cf818 00000000`05321d90 0x7ff`fff97488
    00000000`3d6cf820 00000000`00000000 0x5321d90

    14 Id: 1b90.1fe8 Suspend: 0 Teb: 000007ff`fff94000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`3d98ea18 00000000`7709b240 ntdll!NtWaitForSingleObject+0xa
    00000000`3d98ea20 00000000`004ace32 kernel32!WaitForSingleObjectEx+0x9c
    00000000`3d98eae0 00000000`004946a5 sqlservr!SOS_Scheduler::SwitchContext+0x623
    00000000`3d98ed80 00000000`00493c06 sqlservr!SOS_Scheduler::SuspendNonPreemptive+0xc5
    00000000`3d98edc0 00000000`004ad88a sqlservr!EventInternal<Spinlock >::Wait+0x436
    00000000`3d98f3b0 00000000`028c9663 sqlservr!CTraceManagementTask::Invoke+0x40
    00000000`3d98f410 00000000`00499dab sqlservr!CTraceBatchTask::Task+0x1a3
    00000000`3d98f4f0 00000000`0049de0a sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`3d98f610 00000000`00499959 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`3d98f6a0 00000000`00a3b760 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`3d98f710 00000000`00a3bab0 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`3d98f7d0 00000000`00a39620 sqlservr!SystemThread::RunWorker+0x60
    00000000`3d98f800 00000000`00a3b15f sqlservr!SystemThreadDispatcher::ProcessWorker+0x12c
    00000000`3d98f890 00000000`751d37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`3d98f920 000007ff`fff95488 msvcr80!_callthreadstartex+0x17
    00000000`3d98f928 00000000`05322080 0x7ff`fff95488
    00000000`3d98f930 00000000`00000000 0x5322080

    15 Id: 1b90.1660 Suspend: 0 Teb: 000007ff`fff92000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`3dc7def8 00000000`7709b240 ntdll!NtWaitForSingleObject+0xa
    00000000`3dc7df00 00000000`004ace32 kernel32!WaitForSingleObjectEx+0x9c
    00000000`3dc7dfc0 00000000`004946a5 sqlservr!SOS_Scheduler::SwitchContext+0x623
    00000000`3dc7e260 00000000`00493c06 sqlservr!SOS_Scheduler::SuspendNonPreemptive+0xc5
    00000000`3dc7e2a0 00000000`02bf372b sqlservr!EventInternal<Spinlock >::Wait+0x436
    00000000`3dc7e890 00000000`02cb4c8d sqlservr!BackupSynchronizedBufferList::RemoveFreeBuffer+0xcb
    00000000`3dc7e900 00000000`02ccb74a sqlservr!BackupOperation::CopyFileToBackupSet0+0x4dd
    00000000`3dc7eaf0 00000000`021c1642 sqlservr!BackupOperation::CopyFileToBackupSet+0x3a
    00000000`3dc7eb60 00000000`021c1ad1 sqlservr!AsynchronousDiskAction::ExecuteDeferredAction+0x1f2
    00000000`3dc7ec00 00000000`025f302d sqlservr!AsynchronousDiskPool::ProcessActions+0x91
    00000000`3dc7ec50 00000000`009336e2 sqlservr!AsynchronousDiskWorker::ThreadRoutine+0x7d
    00000000`3dc7ece0 00000000`00499dab sqlservr!SubprocEntrypoint+0x622
    00000000`3dc7f5d0 00000000`0049de0a sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`3dc7f6f0 00000000`00499959 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`3dc7f780 00000000`00a3b760 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`3dc7f7f0 00000000`00a3bab0 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`3dc7f8b0 00000000`00a39620 sqlservr!SystemThread::RunWorker+0x60
    00000000`3dc7f8e0 00000000`00a3b15f sqlservr!SystemThreadDispatcher::ProcessWorker+0x12c
    00000000`3dc7f970 00000000`751d37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`3dc7fa00 000007ff`fff93488 msvcr80!_callthreadstartex+0x17
    00000000`3dc7fa08 00000000`05322080 0x7ff`fff93488
    00000000`3dc7fa10 00000000`00000000 0x5322080

    16 Id: 1b90.a2c Suspend: 0 Teb: 000007ff`fff90000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`3e05f378 00000000`770e4327 ntdll!ZwSignalAndWaitForSingleObject+0xa
    00000000`3e05f380 00000000`004ad24d kernel32!SignalObjectAndWait+0x117
    00000000`3e05f440 00000000`00a47cc3 sqlservr!SOS_Scheduler::SwitchContext+0x84d
    00000000`3e05f6e0 00000000`00499dab sqlservr!SOS_Scheduler::Idle+0xa2
    00000000`3e05f710 00000000`0049de0a sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`3e05f830 00000000`00499959 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`3e05f8c0 00000000`00a3b760 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`3e05f930 00000000`00a3bab0 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`3e05f9f0 00000000`00a39620 sqlservr!SystemThread::RunWorker+0x60
    00000000`3e05fa20 00000000`00a3b15f sqlservr!SystemThreadDispatcher::ProcessWorker+0x12c
    00000000`3e05fab0 00000000`751d37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`3e05fb40 000007ff`fff91488 msvcr80!_callthreadstartex+0x17
    00000000`3e05fb48 00000000`05322660 0x7ff`fff91488
    00000000`3e05fb50 00000000`00000000 0x5322660

    17 Id: 1b90.1c04 Suspend: 0 Teb: 000007ff`fff8e000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`3e25c178 00000000`770e4327 ntdll!ZwSignalAndWaitForSingleObject+0xa
    00000000`3e25c180 00000000`004ad24d kernel32!SignalObjectAndWait+0x117
    00000000`3e25c240 00000000`004946a5 sqlservr!SOS_Scheduler::SwitchContext+0x84d
    00000000`3e25c4e0 00000000`00493c06 sqlservr!SOS_Scheduler::SuspendNonPreemptive+0xc5
    00000000`3e25c520 00000000`004a99de sqlservr!EventInternal<Spinlock >::Wait+0x436
    00000000`3e25cb10 00000000`0291f238 sqlservr!BPool::LazyWriter+0x842
    00000000`3e25eff0 00000000`00499dab sqlservr!lazywriter+0x2c8
    00000000`3e25f4e0 00000000`0049de0a sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`3e25f600 00000000`00499959 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`3e25f690 00000000`00a3b760 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`3e25f700 00000000`00a3bab0 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`3e25f7c0 00000000`00a39620 sqlservr!SystemThread::RunWorker+0x60
    00000000`3e25f7f0 00000000`00a3b15f sqlservr!SystemThreadDispatcher::ProcessWorker+0x12c
    00000000`3e25f880 00000000`751d37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`3e25f910 000007ff`fff8f488 msvcr80!_callthreadstartex+0x17
    00000000`3e25f918 00000000`05322660 0x7ff`fff8f488
    00000000`3e25f920 00000000`00000000 0x5322660

    18 Id: 1b90.b70 Suspend: 0 Teb: 000007ff`fff8c000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`3e46f5f8 00000000`770e4327 ntdll!ZwSignalAndWaitForSingleObject+0xa
    00000000`3e46f600 00000000`004ad24d kernel32!SignalObjectAndWait+0x117
    00000000`3e46f6c0 00000000`00a47cc3 sqlservr!SOS_Scheduler::SwitchContext+0x84d
    00000000`3e46f960 00000000`00499dab sqlservr!SOS_Scheduler::Idle+0xa2
    00000000`3e46f990 00000000`0049de0a sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`3e46fab0 00000000`00499959 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`3e46fb40 00000000`00a3b760 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`3e46fbb0 00000000`00a3bab0 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`3e46fc70 00000000`00a39620 sqlservr!SystemThread::RunWorker+0x60
    00000000`3e46fca0 00000000`00a3b15f sqlservr!SystemThreadDispatcher::ProcessWorker+0x12c
    00000000`3e46fd30 00000000`751d37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`3e46fdc0 000007ff`fff8d488 msvcr80!_callthreadstartex+0x17
    00000000`3e46fdc8 00000000`05322660 0x7ff`fff8d488
    00000000`3e46fdd0 00000000`00000000 0x5322660

    19 Id: 1b90.23b0 Suspend: 0 Teb: 000007ff`fff8a000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`3e7df728 00000000`7709b348 ntdll!NtDelayExecution+0xa
    00000000`3e7df730 00000000`004c2272 kernel32!SleepEx+0x84
    00000000`3e7df7b0 00000000`02bcb189 sqlservr!SchedulerMonitor::Run+0x1e4
    00000000`3e7df8f0 00000000`00499dab sqlservr!SchedulerMonitor::EntryPoint+0x9
    00000000`3e7df920 00000000`0049de0a sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`3e7dfa40 00000000`00499959 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`3e7dfad0 00000000`00a3b760 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`3e7dfb40 00000000`00a3bab0 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`3e7dfc00 00000000`00a39620 sqlservr!SystemThread::RunWorker+0x60
    00000000`3e7dfc30 00000000`00a3b15f sqlservr!SystemThreadDispatcher::ProcessWorker+0x12c
    00000000`3e7dfcc0 00000000`751d37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`3e7dfd50 000007ff`fff8b488 msvcr80!_callthreadstartex+0x17
    00000000`3e7dfd58 00000000`05322660 0x7ff`fff8b488
    00000000`3e7dfd60 00000000`00000000 0x5322660

    20 Id: 1b90.1c40 Suspend: 0 Teb: 000007ff`fff88000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`3eb0f3e8 00000000`770e4327 ntdll!ZwSignalAndWaitForSingleObject+0xa
    00000000`3eb0f3f0 00000000`004ad24d kernel32!SignalObjectAndWait+0x117
    00000000`3eb0f4b0 00000000`00a47cc3 sqlservr!SOS_Scheduler::SwitchContext+0x84d
    00000000`3eb0f750 00000000`00499dab sqlservr!SOS_Scheduler::Idle+0xa2
    00000000`3eb0f780 00000000`0049de0a sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`3eb0f8a0 00000000`00499959 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`3eb0f930 00000000`00a3b760 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`3eb0f9a0 00000000`00a3bab0 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`3eb0fa60 00000000`00a39620 sqlservr!SystemThread::RunWorker+0x60
    00000000`3eb0fa90 00000000`00a3b15f sqlservr!SystemThreadDispatcher::ProcessWorker+0x12c
    00000000`3eb0fb20 00000000`751d37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`3eb0fbb0 000007ff`fff89488 msvcr80!_callthreadstartex+0x17
    00000000`3eb0fbb8 00000000`05322660 0x7ff`fff89488
    00000000`3eb0fbc0 00000000`00000000 0x5322660

    21 Id: 1b90.e48 Suspend: 0 Teb: 000007ff`fff84000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`3f07f2e8 00000000`770e4327 ntdll!ZwSignalAndWaitForSingleObject+0xa
    00000000`3f07f2f0 00000000`004ad24d kernel32!SignalObjectAndWait+0x117
    00000000`3f07f3b0 00000000`00a47cc3 sqlservr!SOS_Scheduler::SwitchContext+0x84d
    00000000`3f07f650 00000000`00499dab sqlservr!SOS_Scheduler::Idle+0xa2
    00000000`3f07f680 00000000`0049de0a sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`3f07f7a0 00000000`00499959 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`3f07f830 00000000`00a3b760 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`3f07f8a0 00000000`00a3bab0 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`3f07f960 00000000`00a39620 sqlservr!SystemThread::RunWorker+0x60
    00000000`3f07f990 00000000`00a3b15f sqlservr!SystemThreadDispatcher::ProcessWorker+0x12c
    00000000`3f07fa20 00000000`751d37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`3f07fab0 000007ff`fff85488 msvcr80!_callthreadstartex+0x17
    00000000`3f07fab8 00000000`05322660 0x7ff`fff85488
    00000000`3f07fac0 00000000`00000000 0x5322660

    22 Id: 1b90.210c Suspend: 0 Teb: 000007ff`fff80000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`3f6ff508 00000000`770e4327 ntdll!ZwSignalAndWaitForSingleObject+0xa
    00000000`3f6ff510 00000000`004ad24d kernel32!SignalObjectAndWait+0x117
    00000000`3f6ff5d0 00000000`00a47cc3 sqlservr!SOS_Scheduler::SwitchContext+0x84d
    00000000`3f6ff870 00000000`00499dab sqlservr!SOS_Scheduler::Idle+0xa2
    00000000`3f6ff8a0 00000000`0049de0a sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`3f6ff9c0 00000000`00499959 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`3f6ffa50 00000000`00a3b760 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`3f6ffac0 00000000`00a3bab0 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`3f6ffb80 00000000`00a39620 sqlservr!SystemThread::RunWorker+0x60
    00000000`3f6ffbb0 00000000`00a3b15f sqlservr!SystemThreadDispatcher::ProcessWorker+0x12c
    00000000`3f6ffc40 00000000`751d37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`3f6ffcd0 000007ff`fff81488 msvcr80!_callthreadstartex+0x17
    00000000`3f6ffcd8 00000000`05322660 0x7ff`fff81488
    00000000`3f6ffce0 00000000`00000000 0x5322660

    23 Id: 1b90.384 Suspend: 0 Teb: 000007ff`fff7e000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`3f96dc48 00000000`770e4327 ntdll!ZwSignalAndWaitForSingleObject+0xa
    00000000`3f96dc50 00000000`004ad24d kernel32!SignalObjectAndWait+0x117
    00000000`3f96dd10 00000000`004946a5 sqlservr!SOS_Scheduler::SwitchContext+0x84d
    00000000`3f96dfb0 00000000`00493c06 sqlservr!SOS_Scheduler::SuspendNonPreemptive+0xc5
    00000000`3f96dff0 00000000`00495b89 sqlservr!EventInternal<Spinlock >::Wait+0x436
    00000000`3f96e5e0 00000000`028dc451 sqlservr!CSbTransmissionLazyFlusher::LazyFlushTask+0x249
    00000000`3f96e760 00000000`028dc767 sqlservr!CSbTask::TaskStart+0x2f1
    00000000`3f96f890 00000000`00499dab sqlservr!CSbTask::BeginTaskStart+0x27
    00000000`3f96f8d0 00000000`0049de0a sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`3f96f9f0 00000000`00499959 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`3f96fa80 00000000`00a3b760 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`3f96faf0 00000000`00a3bab0 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`3f96fbb0 00000000`00a39620 sqlservr!SystemThread::RunWorker+0x60
    00000000`3f96fbe0 00000000`00a3b15f sqlservr!SystemThreadDispatcher::ProcessWorker+0x12c
    00000000`3f96fc70 00000000`751d37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`3f96fd00 000007ff`fff7f488 msvcr80!_callthreadstartex+0x17
    00000000`3f96fd08 00000000`05322660 0x7ff`fff7f488
    00000000`3f96fd10 00000000`00000000 0x5322660

    24 Id: 1b90.b10 Suspend: 0 Teb: 000007ff`fff7c000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`3fb8f498 00000000`770e4327 ntdll!ZwSignalAndWaitForSingleObject+0xa
    00000000`3fb8f4a0 00000000`004ad24d kernel32!SignalObjectAndWait+0x117
    00000000`3fb8f560 00000000`00a47cc3 sqlservr!SOS_Scheduler::SwitchContext+0x84d
    00000000`3fb8f800 00000000`00499dab sqlservr!SOS_Scheduler::Idle+0xa2
    00000000`3fb8f830 00000000`0049de0a sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`3fb8f950 00000000`00499959 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`3fb8f9e0 00000000`00a3b760 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`3fb8fa50 00000000`00a3bab0 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`3fb8fb10 00000000`00a39620 sqlservr!SystemThread::RunWorker+0x60
    00000000`3fb8fb40 00000000`00a3b15f sqlservr!SystemThreadDispatcher::ProcessWorker+0x12c
    00000000`3fb8fbd0 00000000`751d37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`3fb8fc60 000007ff`fff7d488 msvcr80!_callthreadstartex+0x17
    00000000`3fb8fc68 00000000`05322660 0x7ff`fff7d488
    00000000`3fb8fc70 00000000`00000000 0x5322660

    25 Id: 1b90.16f0 Suspend: 0 Teb: 000007ff`fff7a000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`3fe0f278 00000000`7708ec0c ntdll!ZwRemoveIoCompletion+0xa
    00000000`3fe0f280 00000000`0054b477 kernel32!GetQueuedCompletionStatus+0x48
    00000000`3fe0f2e0 00000000`00499dab sqlservr!SOS_Node::ListenOnIOCompletionPort+0x137
    00000000`3fe0f470 00000000`0049de0a sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`3fe0f590 00000000`00499959 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`3fe0f620 00000000`00a3b760 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`3fe0f690 00000000`00a3bab0 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`3fe0f750 00000000`00a39620 sqlservr!SystemThread::RunWorker+0x60
    00000000`3fe0f780 00000000`00a3b15f sqlservr!SystemThreadDispatcher::ProcessWorker+0x12c
    00000000`3fe0f810 00000000`751d37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`3fe0f8a0 000007ff`fff7b488 msvcr80!_callthreadstartex+0x17
    00000000`3fe0f8a8 00000000`05322660 0x7ff`fff7b488
    00000000`3fe0f8b0 00000000`00000000 0x5322660

    26 Id: 1b90.166c Suspend: 0 Teb: 000007ff`fff78000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`4001f178 00000000`7708af83 ntdll!NtWaitForMultipleObjects+0xa
    00000000`4001f180 00000000`77081541 kernel32!WaitForMultipleObjectsEx+0x10b
    00000000`4001f290 00000000`004add6a kernel32!WaitForMultipleObjects+0x11
    00000000`4001f2d0 00000000`025d8af8 sqlservr!ResourceMonitor::CheckIndicators+0x187
    00000000`4001f380 00000000`028d3a1b sqlservr!ResourceMonitor::ResourceMonitorTask+0x1b8
    00000000`4001f4d0 00000000`00499dab sqlservr!SetupResourceMonitorTaskContext+0x11b
    00000000`4001f810 00000000`0049de0a sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`4001f930 00000000`00499959 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`4001f9c0 00000000`00a3b760 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`4001fa30 00000000`00a3bab0 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`4001faf0 00000000`00a39620 sqlservr!SystemThread::RunWorker+0x60
    00000000`4001fb20 00000000`00a3b15f sqlservr!SystemThreadDispatcher::ProcessWorker+0x12c
    00000000`4001fbb0 00000000`751d37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`4001fc40 000007ff`fff79488 msvcr80!_callthreadstartex+0x17
    00000000`4001fc48 00000000`05324c90 0x7ff`fff79488
    00000000`4001fc50 00000000`00000000 0x5324c90

    27 Id: 1b90.2208 Suspend: 0 Teb: 000007ff`fff76000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`402aee28 00000000`7709b240 ntdll!NtWaitForSingleObject+0xa
    00000000`402aee30 00000000`004c1906 kernel32!WaitForSingleObjectEx+0x9c
    00000000`402aeef0 00000000`004c1a1f sqlservr!SystemThread::Suspend+0x26
    00000000`402aef20 00000000`004c18af sqlservr!SOS_Scheduler::SuspendPreemptive+0xdf
    00000000`402af050 00000000`00a51640 sqlservr!EventInternal<Spinlock >::Wait+0x837
    00000000`402af640 00000000`026dca5e sqlservr!XE_Timer::Run+0x8f
    00000000`402af6e0 00000000`028ca28f sqlservr!XE_Timer::EntryPointWithContext+0x4e
    00000000`402af780 00000000`026dcb18 sqlservr!XESQLSetupThreadContext+0xff
    00000000`402af860 00000000`00499dab sqlservr!XE_Timer::EntryPoint+0x28
    00000000`402af890 00000000`0049de0a sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`402af9b0 00000000`00499959 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`402afa40 00000000`00a3b760 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`402afab0 00000000`00a3bab0 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`402afb70 00000000`00a39620 sqlservr!SystemThread::RunWorker+0x60
    00000000`402afba0 00000000`00a3b15f sqlservr!SystemThreadDispatcher::ProcessWorker+0x12c
    00000000`402afc30 00000000`751d37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`402afcc0 000007ff`fff77488 msvcr80!_callthreadstartex+0x17
    00000000`402afcc8 00000000`05322660 0x7ff`fff77488
    00000000`402afcd0 00000000`00000000 0x5322660

    28 Id: 1b90.1ed4 Suspend: 0 Teb: 000007ff`fff74000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`4086cd88 00000000`770e4327 ntdll!ZwSignalAndWaitForSingleObject+0xa
    00000000`4086cd90 00000000`004ad24d kernel32!SignalObjectAndWait+0x117
    00000000`4086ce50 00000000`00493403 sqlservr!SOS_Scheduler::SwitchContext+0x84d
    00000000`4086d0f0 00000000`004958b4 sqlservr!SOS_Scheduler::Suspend+0x9f
    00000000`4086d130 00000000`00695625 sqlservr!SOS_Task::Sleep+0x354
    00000000`4086d460 00000000`00694bd8 sqlservr!BPool::FlushCache+0x659
    00000000`4086e8e0 00000000`00694c9e sqlservr!checkpoint2+0x649
    00000000`4086f120 00000000`00694de3 sqlservr!checkpoint+0x4e
    00000000`4086f160 00000000`00694cc8 sqlservr!ProcessCheckpointRequest+0x103
    00000000`4086f200 00000000`02ba5267 sqlservr!CheckpointLoop+0x2bc
    00000000`4086f420 00000000`00499dab sqlservr!ckptproc+0x47
    00000000`4086f490 00000000`0049de0a sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`4086f5b0 00000000`00499959 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`4086f640 00000000`00a3b760 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`4086f6b0 00000000`00a3bab0 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`4086f770 00000000`00a39620 sqlservr!SystemThread::RunWorker+0x60
    00000000`4086f7a0 00000000`00a3b15f sqlservr!SystemThreadDispatcher::ProcessWorker+0x12c
    00000000`4086f830 00000000`751d37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`4086f8c0 000007ff`fff75488 msvcr80!_callthreadstartex+0x17
    00000000`4086f8c8 00000000`05322660 0x7ff`fff75488
    00000000`4086f8d0 00000000`00000000 0x5322660

    29 Id: 1b90.f20 Suspend: 0 Teb: 000007ff`fff72000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`40b3fbf8 00000000`7709b240 ntdll!NtWaitForSingleObject+0xa
    00000000`40b3fc00 00000000`004c1906 kernel32!WaitForSingleObjectEx+0x9c
    00000000`40b3fcc0 00000000`00a395e3 sqlservr!SystemThread::Suspend+0x26
    00000000`40b3fcf0 00000000`00a3b15f sqlservr!SystemThreadDispatcher::ProcessWorker+0xf3
    00000000`40b3fd80 00000000`751d37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`40b3fe10 000007ff`fff73488 msvcr80!_callthreadstartex+0x17
    00000000`40b3fe18 00000000`05325270 0x7ff`fff73488
    00000000`40b3fe20 00000000`00000000 0x5325270

    30 Id: 1b90.1258 Suspend: 0 Teb: 000007ff`fff70000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`42e5f178 00000000`770e4327 ntdll!ZwSignalAndWaitForSingleObject+0xa
    00000000`42e5f180 00000000`004ad24d kernel32!SignalObjectAndWait+0x117
    00000000`42e5f240 00000000`00493403 sqlservr!SOS_Scheduler::SwitchContext+0x84d
    00000000`42e5f4e0 00000000`00499c5e sqlservr!SOS_Scheduler::Suspend+0x9f
    00000000`42e5f520 00000000`00499912 sqlservr!WorkDispatcher::DequeueTask+0xae
    00000000`42e5f590 00000000`00a3b760 sqlservr!SOS_Scheduler::ProcessTasks+0x52
    00000000`42e5f600 00000000`00a3bab0 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`42e5f6c0 00000000`00a39620 sqlservr!SystemThread::RunWorker+0x60
    00000000`42e5f6f0 00000000`00a3b15f sqlservr!SystemThreadDispatcher::ProcessWorker+0x12c
    00000000`42e5f780 00000000`751d37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`42e5f810 000007ff`fff71488 msvcr80!_callthreadstartex+0x17
    00000000`42e5f818 00000000`05325270 0x7ff`fff71488
    00000000`42e5f820 00000000`00000000 0x5325270

    31 Id: 1b90.1f58 Suspend: 0 Teb: 000007ff`fff6e000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`430bf218 00000000`770e4327 ntdll!ZwSignalAndWaitForSingleObject+0xa
    00000000`430bf220 00000000`004ad24d kernel32!SignalObjectAndWait+0x117
    00000000`430bf2e0 00000000`00a47cc3 sqlservr!SOS_Scheduler::SwitchContext+0x84d
    00000000`430bf580 00000000`00499dab sqlservr!SOS_Scheduler::Idle+0xa2
    00000000`430bf5b0 00000000`0049de0a sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`430bf6d0 00000000`00499959 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`430bf760 00000000`00a3b760 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`430bf7d0 00000000`00a3bab0 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`430bf890 00000000`00a39620 sqlservr!SystemThread::RunWorker+0x60
    00000000`430bf8c0 00000000`00a3b15f sqlservr!SystemThreadDispatcher::ProcessWorker+0x12c
    00000000`430bf950 00000000`751d37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`430bf9e0 000007ff`fff6f488 msvcr80!_callthreadstartex+0x17
    00000000`430bf9e8 00000000`05325270 0x7ff`fff6f488
    00000000`430bf9f0 00000000`00000000 0x5325270

    32 Id: 1b90.1ac4 Suspend: 0 Teb: 000007ff`fff6c000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`4336d898 00000000`770e4327 ntdll!ZwSignalAndWaitForSingleObject+0xa
    00000000`4336d8a0 00000000`004ad24d kernel32!SignalObjectAndWait+0x117
    00000000`4336d960 00000000`004946a5 sqlservr!SOS_Scheduler::SwitchContext+0x84d
    00000000`4336dc00 00000000`00493c06 sqlservr!SOS_Scheduler::SuspendNonPreemptive+0xc5
    00000000`4336dc40 00000000`004ad63d sqlservr!EventInternal<Spinlock >::Wait+0x436
    00000000`4336e230 00000000`005cd33a sqlservr!ResQueueBase::Dequeue+0x19d
    00000000`4336e2f0 00000000`00499dab sqlservr!SQLServerLogMgr::LogWriter+0x21a
    00000000`4336f850 00000000`0049de0a sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`4336f970 00000000`00499959 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`4336fa00 00000000`00a3b760 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`4336fa70 00000000`00a3bab0 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`4336fb30 00000000`00a39620 sqlservr!SystemThread::RunWorker+0x60
    00000000`4336fb60 00000000`00a3b15f sqlservr!SystemThreadDispatcher::ProcessWorker+0x12c
    00000000`4336fbf0 00000000`751d37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`4336fc80 000007ff`fff6d488 msvcr80!_callthreadstartex+0x17
    00000000`4336fc88 00000000`05325270 0x7ff`fff6d488
    00000000`4336fc90 00000000`00000000 0x5325270

    33 Id: 1b90.1f48 Suspend: 0 Teb: 000007ff`fff6a000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`436cf4c8 00000000`770e4327 ntdll!ZwSignalAndWaitForSingleObject+0xa
    00000000`436cf4d0 00000000`004ad24d kernel32!SignalObjectAndWait+0x117
    00000000`436cf590 00000000`00a47cc3 sqlservr!SOS_Scheduler::SwitchContext+0x84d
    00000000`436cf830 00000000`00499dab sqlservr!SOS_Scheduler::Idle+0xa2
    00000000`436cf860 00000000`0049de0a sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`436cf980 00000000`00499959 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`436cfa10 00000000`00a3b760 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`436cfa80 00000000`00a3bab0 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`436cfb40 00000000`00a39620 sqlservr!SystemThread::RunWorker+0x60
    00000000`436cfb70 00000000`00a3b15f sqlservr!SystemThreadDispatcher::ProcessWorker+0x12c
    00000000`436cfc00 00000000`751d37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`436cfc90 000007ff`fff6b488 msvcr80!_callthreadstartex+0x17
    00000000`436cfc98 00000000`05325270 0x7ff`fff6b488
    00000000`436cfca0 00000000`00000000 0x5325270

    34 Id: 1b90.1da4 Suspend: 0 Teb: 000007ff`fff68000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`439ef4c8 00000000`7709b348 ntdll!NtDelayExecution+0xa
    00000000`439ef4d0 00000000`004c2272 kernel32!SleepEx+0x84
    00000000`439ef550 00000000`02bcb189 sqlservr!SchedulerMonitor::Run+0x1e4
    00000000`439ef690 00000000`00499dab sqlservr!SchedulerMonitor::EntryPoint+0x9
    00000000`439ef6c0 00000000`0049de0a sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`439ef7e0 00000000`00499959 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`439ef870 00000000`00a3b760 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`439ef8e0 00000000`00a3bab0 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`439ef9a0 00000000`00a39620 sqlservr!SystemThread::RunWorker+0x60
    00000000`439ef9d0 00000000`00a3b15f sqlservr!SystemThreadDispatcher::ProcessWorker+0x12c
    00000000`439efa60 00000000`751d37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`439efaf0 000007ff`fff69488 msvcr80!_callthreadstartex+0x17
    00000000`439efaf8 00000000`05325270 0x7ff`fff69488
    00000000`439efb00 00000000`00000000 0x5325270

    35 Id: 1b90.b1c Suspend: 0 Teb: 000007ff`fff66000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`43c6f368 00000000`770e4327 ntdll!ZwSignalAndWaitForSingleObject+0xa
    00000000`43c6f370 00000000`004ad24d kernel32!SignalObjectAndWait+0x117
    00000000`43c6f430 00000000`00a47cc3 sqlservr!SOS_Scheduler::SwitchContext+0x84d
    00000000`43c6f6d0 00000000`00499dab sqlservr!SOS_Scheduler::Idle+0xa2
    00000000`43c6f700 00000000`0049de0a sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`43c6f820 00000000`00499959 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`43c6f8b0 00000000`00a3b760 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`43c6f920 00000000`00a3bab0 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`43c6f9e0 00000000`00a39620 sqlservr!SystemThread::RunWorker+0x60
    00000000`43c6fa10 00000000`00a3b15f sqlservr!SystemThreadDispatcher::ProcessWorker+0x12c
    00000000`43c6faa0 00000000`751d37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`43c6fb30 000007ff`fff67488 msvcr80!_callthreadstartex+0x17
    00000000`43c6fb38 00000000`05325270 0x7ff`fff67488
    00000000`43c6fb40 00000000`00000000 0x5325270

    36 Id: 1b90.1290 Suspend: 0 Teb: 000007ff`fff62000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`4438f4c8 00000000`770e4327 ntdll!ZwSignalAndWaitForSingleObject+0xa
    00000000`4438f4d0 00000000`004ad24d kernel32!SignalObjectAndWait+0x117
    00000000`4438f590 00000000`00a47cc3 sqlservr!SOS_Scheduler::SwitchContext+0x84d
    00000000`4438f830 00000000`00499dab sqlservr!SOS_Scheduler::Idle+0xa2
    00000000`4438f860 00000000`0049de0a sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`4438f980 00000000`00499959 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`4438fa10 00000000`00a3b760 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`4438fa80 00000000`00a3bab0 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`4438fb40 00000000`00a39620 sqlservr!SystemThread::RunWorker+0x60
    00000000`4438fb70 00000000`00a3b15f sqlservr!SystemThreadDispatcher::ProcessWorker+0x12c
    00000000`4438fc00 00000000`751d37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`4438fc90 000007ff`fff63488 msvcr80!_callthreadstartex+0x17
    00000000`4438fc98 00000000`05325270 0x7ff`fff63488
    00000000`4438fca0 00000000`00000000 0x5325270

    37 Id: 1b90.1f40 Suspend: 0 Teb: 000007ff`fff5e000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`44a9f388 00000000`770e4327 ntdll!ZwSignalAndWaitForSingleObject+0xa
    00000000`44a9f390 00000000`004ad24d kernel32!SignalObjectAndWait+0x117
    00000000`44a9f450 00000000`00a47cc3 sqlservr!SOS_Scheduler::SwitchContext+0x84d
    00000000`44a9f6f0 00000000`00499dab sqlservr!SOS_Scheduler::Idle+0xa2
    00000000`44a9f720 00000000`0049de0a sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`44a9f840 00000000`00499959 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`44a9f8d0 00000000`00a3b760 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`44a9f940 00000000`00a3bab0 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`44a9fa00 00000000`00a39620 sqlservr!SystemThread::RunWorker+0x60
    00000000`44a9fa30 00000000`00a3b15f sqlservr!SystemThreadDispatcher::ProcessWorker+0x12c
    00000000`44a9fac0 00000000`751d37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`44a9fb50 000007ff`fff5f488 msvcr80!_callthreadstartex+0x17
    00000000`44a9fb58 00000000`05325270 0x7ff`fff5f488
    00000000`44a9fb60 00000000`00000000 0x5325270

    38 Id: 1b90.1f60 Suspend: 0 Teb: 000007ff`fff5c000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`44dff278 00000000`770e4327 ntdll!ZwSignalAndWaitForSingleObject+0xa
    00000000`44dff280 00000000`004ad24d kernel32!SignalObjectAndWait+0x117
    00000000`44dff340 00000000`00493403 sqlservr!SOS_Scheduler::SwitchContext+0x84d
    00000000`44dff5e0 00000000`00499c5e sqlservr!SOS_Scheduler::Suspend+0x9f
    00000000`44dff620 00000000`00499912 sqlservr!WorkDispatcher::DequeueTask+0xae
    00000000`44dff690 00000000`00a3b760 sqlservr!SOS_Scheduler::ProcessTasks+0x52
    00000000`44dff700 00000000`00a3bab0 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`44dff7c0 00000000`00a39620 sqlservr!SystemThread::RunWorker+0x60
    00000000`44dff7f0 00000000`00a3b15f sqlservr!SystemThreadDispatcher::ProcessWorker+0x12c
    00000000`44dff880 00000000`751d37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`44dff910 000007ff`fff5d488 msvcr80!_callthreadstartex+0x17
    00000000`44dff918 00000000`05325270 0x7ff`fff5d488
    00000000`44dff920 00000000`00000000 0x5325270

    39 Id: 1b90.d1c Suspend: 0 Teb: 000007ff`fff5a000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`4503f2f8 00000000`770e4327 ntdll!ZwSignalAndWaitForSingleObject+0xa
    00000000`4503f300 00000000`004ad24d kernel32!SignalObjectAndWait+0x117
    00000000`4503f3c0 00000000`00a47cc3 sqlservr!SOS_Scheduler::SwitchContext+0x84d
    00000000`4503f660 00000000`00499dab sqlservr!SOS_Scheduler::Idle+0xa2
    00000000`4503f690 00000000`0049de0a sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`4503f7b0 00000000`00499959 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`4503f840 00000000`00a3b760 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`4503f8b0 00000000`00a3bab0 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`4503f970 00000000`00a39620 sqlservr!SystemThread::RunWorker+0x60
    00000000`4503f9a0 00000000`00a3b15f sqlservr!SystemThreadDispatcher::ProcessWorker+0x12c
    00000000`4503fa30 00000000`751d37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`4503fac0 000007ff`fff5b488 msvcr80!_callthreadstartex+0x17
    00000000`4503fac8 00000000`05325270 0x7ff`fff5b488
    00000000`4503fad0 00000000`00000000 0x5325270

    40 Id: 1b90.1cec Suspend: 0 Teb: 000007ff`fff58000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`452cf848 00000000`7708ec0c ntdll!ZwRemoveIoCompletion+0xa
    00000000`452cf850 00000000`0054b477 kernel32!GetQueuedCompletionStatus+0x48
    00000000`452cf8b0 00000000`00499dab sqlservr!SOS_Node::ListenOnIOCompletionPort+0x137
    00000000`452cfa40 00000000`0049de0a sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`452cfb60 00000000`00499959 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`452cfbf0 00000000`00a3b760 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`452cfc60 00000000`00a3bab0 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`452cfd20 00000000`00a39620 sqlservr!SystemThread::RunWorker+0x60
    00000000`452cfd50 00000000`00a3b15f sqlservr!SystemThreadDispatcher::ProcessWorker+0x12c
    00000000`452cfde0 00000000`751d37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`452cfe70 000007ff`fff59488 msvcr80!_callthreadstartex+0x17
    00000000`452cfe78 00000000`05325270 0x7ff`fff59488
    00000000`452cfe80 00000000`00000000 0x5325270

    41 Id: 1b90.dc Suspend: 0 Teb: 000007ff`fff56000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`454fc528 00000000`770e4327 ntdll!ZwSignalAndWaitForSingleObject+0xa
    00000000`454fc530 00000000`004ad24d kernel32!SignalObjectAndWait+0x117
    00000000`454fc5f0 00000000`004946a5 sqlservr!SOS_Scheduler::SwitchContext+0x84d
    00000000`454fc890 00000000`00493c06 sqlservr!SOS_Scheduler::SuspendNonPreemptive+0xc5
    00000000`454fc8d0 00000000`004a99de sqlservr!EventInternal<Spinlock >::Wait+0x436
    00000000`454fcec0 00000000`0291f238 sqlservr!BPool::LazyWriter+0x842
    00000000`454ff3a0 00000000`00499dab sqlservr!lazywriter+0x2c8
    00000000`454ff890 00000000`0049de0a sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`454ff9b0 00000000`00499959 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`454ffa40 00000000`00a3b760 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`454ffab0 00000000`00a3bab0 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`454ffb70 00000000`00a39620 sqlservr!SystemThread::RunWorker+0x60
    00000000`454ffba0 00000000`00a3b15f sqlservr!SystemThreadDispatcher::ProcessWorker+0x12c
    00000000`454ffc30 00000000`751d37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`454ffcc0 000007ff`fff57488 msvcr80!_callthreadstartex+0x17
    00000000`454ffcc8 00000000`05325270 0x7ff`fff57488
    00000000`454ffcd0 00000000`00000000 0x5325270

    42 Id: 1b90.e0 Suspend: 0 Teb: 000007ff`fff54000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`4576f1b8 00000000`7708af83 ntdll!NtWaitForMultipleObjects+0xa
    00000000`4576f1c0 00000000`77081541 kernel32!WaitForMultipleObjectsEx+0x10b
    00000000`4576f2d0 00000000`004add6a kernel32!WaitForMultipleObjects+0x11
    00000000`4576f310 00000000`025d8af8 sqlservr!ResourceMonitor::CheckIndicators+0x187
    00000000`4576f3c0 00000000`028d3a1b sqlservr!ResourceMonitor::ResourceMonitorTask+0x1b8
    00000000`4576f510 00000000`00499dab sqlservr!SetupResourceMonitorTaskContext+0x11b
    00000000`4576f850 00000000`0049de0a sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`4576f970 00000000`00499959 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`4576fa00 00000000`00a3b760 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`4576fa70 00000000`00a3bab0 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`4576fb30 00000000`00a39620 sqlservr!SystemThread::RunWorker+0x60
    00000000`4576fb60 00000000`00a3b15f sqlservr!SystemThreadDispatcher::ProcessWorker+0x12c
    00000000`4576fbf0 00000000`751d37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`4576fc80 000007ff`fff55488 msvcr80!_callthreadstartex+0x17
    00000000`4576fc88 00000000`053280d0 0x7ff`fff55488
    00000000`4576fc90 00000000`00000000 0x53280d0

    43 Id: 1b90.1ff0 Suspend: 0 Teb: 000007ff`fff52000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`45cde7b8 00000000`770e4327 ntdll!ZwSignalAndWaitForSingleObject+0xa
    00000000`45cde7c0 00000000`004ad24d kernel32!SignalObjectAndWait+0x117
    00000000`45cde880 00000000`004946a5 sqlservr!SOS_Scheduler::SwitchContext+0x84d
    00000000`45cdeb20 00000000`00493c06 sqlservr!SOS_Scheduler::SuspendNonPreemptive+0xc5
    00000000`45cdeb60 00000000`004ad63d sqlservr!EventInternal<Spinlock >::Wait+0x436
    00000000`45cdf150 00000000`01d1a259 sqlservr!ResQueueBase::Dequeue+0x19d
    00000000`45cdf210 00000000`0291c299 sqlservr!ResQueue::Dequeue+0x19
    00000000`45cdf240 00000000`00499dab sqlservr!systemTaskThread+0x309
    00000000`45cdf750 00000000`0049de0a sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`45cdf870 00000000`00499959 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`45cdf900 00000000`00a3b760 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`45cdf970 00000000`00a3bab0 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`45cdfa30 00000000`00a39620 sqlservr!SystemThread::RunWorker+0x60
    00000000`45cdfa60 00000000`00a3b15f sqlservr!SystemThreadDispatcher::ProcessWorker+0x12c
    00000000`45cdfaf0 00000000`751d37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`45cdfb80 000007ff`fff53488 msvcr80!_callthreadstartex+0x17
    00000000`45cdfb88 00000000`053280d0 0x7ff`fff53488
    00000000`45cdfb90 00000000`00000000 0x53280d0

    44 Id: 1b90.1ce8 Suspend: 0 Teb: 000007ff`fff50000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`45f4ed38 00000000`770ed13d ntdll!ZwSetInformationFile+0xa
    00000000`45f4ed40 00000000`019736e6 kernel32!SetEndOfFile+0x9d
    00000000`45f4ed90 00000000`01973824 sqlservr!BackupDiskFile::ExtendFileSize+0x76
    00000000`45f4edd0 00000000`02d4e179 sqlservr!MediaWriteInterface::ExtendFileSize+0xa4
    00000000`45f4ee00 00000000`02d5ce76 sqlservr!BackupMedium::WriteDataStream+0x1d9
    00000000`45f4ef20 00000000`02d5d186 sqlservr!BackupStream::DoFileBackup+0x116
    00000000`45f4ef50 00000000`02bcd33a sqlservr!BackupStream::ThreadMainRoutine+0x196
    00000000`45f4eff0 00000000`009336e2 sqlservr!BackupThread::ThreadBase+0x8a
    00000000`45f4f080 00000000`00499dab sqlservr!SubprocEntrypoint+0x622
    00000000`45f4f970 00000000`0049de0a sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`45f4fa90 00000000`00499959 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`45f4fb20 00000000`00a3b760 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`45f4fb90 00000000`00a3bab0 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`45f4fc50 00000000`00a39620 sqlservr!SystemThread::RunWorker+0x60
    00000000`45f4fc80 00000000`00a3b15f sqlservr!SystemThreadDispatcher::ProcessWorker+0x12c
    00000000`45f4fd10 00000000`751d37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`45f4fda0 000007ff`fff51488 msvcr80!_callthreadstartex+0x17
    00000000`45f4fda8 00000000`053286b0 0x7ff`fff51488
    00000000`45f4fdb0 00000000`00000000 0x53286b0

    45 Id: 1b90.21d0 Suspend: 0 Teb: 000007ff`fff4c000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`4878f6a8 00000000`770e4327 ntdll!ZwSignalAndWaitForSingleObject+0xa
    00000000`4878f6b0 00000000`004ad24d kernel32!SignalObjectAndWait+0x117
    00000000`4878f770 00000000`00a47cc3 sqlservr!SOS_Scheduler::SwitchContext+0x84d
    00000000`4878fa10 00000000`00499dab sqlservr!SOS_Scheduler::Idle+0xa2
    00000000`4878fa40 00000000`0049de0a sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`4878fb60 00000000`00499959 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`4878fbf0 00000000`00a3b760 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`4878fc60 00000000`00a3bab0 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`4878fd20 00000000`00a39620 sqlservr!SystemThread::RunWorker+0x60
    00000000`4878fd50 00000000`00a3b15f sqlservr!SystemThreadDispatcher::ProcessWorker+0x12c
    00000000`4878fde0 00000000`751d37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`4878fe70 000007ff`fff4d488 msvcr80!_callthreadstartex+0x17
    00000000`4878fe78 00000000`053286b0 0x7ff`fff4d488
    00000000`4878fe80 00000000`00000000 0x53286b0

    46 Id: 1b90.1730 Suspend: 0 Teb: 000007ff`fff4a000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`489ce6a8 00000000`7709b240 ntdll!NtWaitForSingleObject+0xa
    00000000`489ce6b0 00000000`004c1906 kernel32!WaitForSingleObjectEx+0x9c
    00000000`489ce770 00000000`004c1a1f sqlservr!SystemThread::Suspend+0x26
    00000000`489ce7a0 00000000`004c18af sqlservr!SOS_Scheduler::SuspendPreemptive+0xdf
    00000000`489ce8d0 00000000`004ad63d sqlservr!EventInternal<Spinlock >::Wait+0x837
    00000000`489ceec0 00000000`004c3a2f sqlservr!ResQueueBase::Dequeue+0x19d
    00000000`489cef80 00000000`004c3e73 sqlservr!DeadlockMonitor::Dequeue+0x1f
    00000000`489cefb0 00000000`004c43af sqlservr!DeadlockMonitor::WorkLoop+0xc3
    00000000`489cf120 00000000`02d62fee sqlservr!lockMonitor+0xfa
    00000000`489cf290 00000000`00499dab sqlservr!lockMonitorThread+0xae
    00000000`489cf580 00000000`0049de0a sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`489cf6a0 00000000`00499959 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`489cf730 00000000`00a3b760 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`489cf7a0 00000000`00a3bab0 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`489cf860 00000000`00a39620 sqlservr!SystemThread::RunWorker+0x60
    00000000`489cf890 00000000`00a3b15f sqlservr!SystemThreadDispatcher::ProcessWorker+0x12c
    00000000`489cf920 00000000`751d37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`489cf9b0 000007ff`fff4b488 msvcr80!_callthreadstartex+0x17
    00000000`489cf9b8 00000000`053286b0 0x7ff`fff4b488
    00000000`489cf9c0 00000000`00000000 0x53286b0

    47 Id: 1b90.1da8 Suspend: 0 Teb: 000007ff`fff48000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`48c5f3e8 00000000`770e4327 ntdll!ZwSignalAndWaitForSingleObject+0xa
    00000000`48c5f3f0 00000000`004ad24d kernel32!SignalObjectAndWait+0x117
    00000000`48c5f4b0 00000000`00a47cc3 sqlservr!SOS_Scheduler::SwitchContext+0x84d
    00000000`48c5f750 00000000`00499dab sqlservr!SOS_Scheduler::Idle+0xa2
    00000000`48c5f780 00000000`0049de0a sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`48c5f8a0 00000000`00499959 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`48c5f930 00000000`00a3b760 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`48c5f9a0 00000000`00a3bab0 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`48c5fa60 00000000`00a39620 sqlservr!SystemThread::RunWorker+0x60
    00000000`48c5fa90 00000000`00a3b15f sqlservr!SystemThreadDispatcher::ProcessWorker+0x12c
    00000000`48c5fb20 00000000`751d37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`48c5fbb0 000007ff`fff49488 msvcr80!_callthreadstartex+0x17
    00000000`48c5fbb8 00000000`053286b0 0x7ff`fff49488
    00000000`48c5fbc0 00000000`00000000 0x53286b0

    48 Id: 1b90.134 Suspend: 0 Teb: 000007ff`fff46000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`48f8f5c8 00000000`7709b348 ntdll!NtDelayExecution+0xa
    00000000`48f8f5d0 00000000`004c2272 kernel32!SleepEx+0x84
    00000000`48f8f650 00000000`02bcb189 sqlservr!SchedulerMonitor::Run+0x1e4
    00000000`48f8f790 00000000`00499dab sqlservr!SchedulerMonitor::EntryPoint+0x9
    00000000`48f8f7c0 00000000`0049de0a sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`48f8f8e0 00000000`00499959 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`48f8f970 00000000`00a3b760 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`48f8f9e0 00000000`00a3bab0 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`48f8faa0 00000000`00a39620 sqlservr!SystemThread::RunWorker+0x60
    00000000`48f8fad0 00000000`00a3b15f sqlservr!SystemThreadDispatcher::ProcessWorker+0x12c
    00000000`48f8fb60 00000000`751d37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`48f8fbf0 000007ff`fff47488 msvcr80!_callthreadstartex+0x17
    00000000`48f8fbf8 00000000`053286b0 0x7ff`fff47488
    00000000`48f8fc00 00000000`00000000 0x53286b0

    49 Id: 1b90.21c0 Suspend: 0 Teb: 000007ff`fff44000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`4926f3d8 00000000`770e4327 ntdll!ZwSignalAndWaitForSingleObject+0xa
    00000000`4926f3e0 00000000`004ad24d kernel32!SignalObjectAndWait+0x117
    00000000`4926f4a0 00000000`00a47cc3 sqlservr!SOS_Scheduler::SwitchContext+0x84d
    00000000`4926f740 00000000`00499dab sqlservr!SOS_Scheduler::Idle+0xa2
    00000000`4926f770 00000000`0049de0a sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`4926f890 00000000`00499959 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`4926f920 00000000`00a3b760 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`4926f990 00000000`00a3bab0 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`4926fa50 00000000`00a39620 sqlservr!SystemThread::RunWorker+0x60
    00000000`4926fa80 00000000`00a3b15f sqlservr!SystemThreadDispatcher::ProcessWorker+0x12c
    00000000`4926fb10 00000000`751d37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`4926fba0 000007ff`fff45488 msvcr80!_callthreadstartex+0x17
    00000000`4926fba8 00000000`053286b0 0x7ff`fff45488
    00000000`4926fbb0 00000000`00000000 0x53286b0

    50 Id: 1b90.21bc Suspend: 0 Teb: 000007ff`fff42000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`4951f438 00000000`770e4327 ntdll!ZwSignalAndWaitForSingleObject+0xa
    00000000`4951f440 00000000`004ad24d kernel32!SignalObjectAndWait+0x117
    00000000`4951f500 00000000`00493403 sqlservr!SOS_Scheduler::SwitchContext+0x84d
    00000000`4951f7a0 00000000`00499c5e sqlservr!SOS_Scheduler::Suspend+0x9f
    00000000`4951f7e0 00000000`00499912 sqlservr!WorkDispatcher::DequeueTask+0xae
    00000000`4951f850 00000000`00a3b760 sqlservr!SOS_Scheduler::ProcessTasks+0x52
    00000000`4951f8c0 00000000`00a3bab0 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`4951f980 00000000`00a39620 sqlservr!SystemThread::RunWorker+0x60
    00000000`4951f9b0 00000000`00a3b15f sqlservr!SystemThreadDispatcher::ProcessWorker+0x12c
    00000000`4951fa40 00000000`751d37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`4951fad0 000007ff`fff43488 msvcr80!_callthreadstartex+0x17
    00000000`4951fad8 00000000`053286b0 0x7ff`fff43488
    00000000`4951fae0 00000000`00000000 0x53286b0

    51 Id: 1b90.1cc4 Suspend: 0 Teb: 000007ff`fff40000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`4976f1a8 00000000`770e4327 ntdll!ZwSignalAndWaitForSingleObject+0xa
    00000000`4976f1b0 00000000`004ad24d kernel32!SignalObjectAndWait+0x117
    00000000`4976f270 00000000`00a47cc3 sqlservr!SOS_Scheduler::SwitchContext+0x84d
    00000000`4976f510 00000000`00499dab sqlservr!SOS_Scheduler::Idle+0xa2
    00000000`4976f540 00000000`0049de0a sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`4976f660 00000000`00499959 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`4976f6f0 00000000`00a3b760 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`4976f760 00000000`00a3bab0 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`4976f820 00000000`00a39620 sqlservr!SystemThread::RunWorker+0x60
    00000000`4976f850 00000000`00a3b15f sqlservr!SystemThreadDispatcher::ProcessWorker+0x12c
    00000000`4976f8e0 00000000`751d37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`4976f970 000007ff`fff41

  50. Shivam bhatia said

    Microsoft (R) Windows Debugger Version 6.11.0001.404 X86
    Copyright (c) Microsoft Corporation. All rights reserved.

    Loading Dump File [\\kratos\E$\MSSQL10.AE\MSSQL\Log\SQLDump0012.mdmp]
    User Mini Dump File: Only registers, stack and portions of memory are available

    Comment: ‘Stack Trace’
    Comment: ‘Deadlocked Schedulers’
    Symbol search path is: srv*c:\Websymbols*http://msdl.microsoft.com/download/symbols
    Executable search path is:
    Windows 7 Version 7601 (Service Pack 1) MP (24 procs) Free x64
    Product: Server, suite: Enterprise TerminalServer SingleUserTS
    Machine Name:
    Debug session time: Tue Jun 10 12:07:55.000 2014 (GMT+6)
    System Uptime: 36 days 16:56:36.278
    Process Uptime: 36 days 16:53:56.000
    ……………………………………………………….
    ……………………………………………………….
    …….
    Loading unloaded module list
    ……………………………………………………………
    This dump file has an exception of interest stored in it.
    The stored exception information can be accessed via .ecxr.
    (2c4.16a0): Unknown exception – code 0ef12228 (first/second chance not available)
    ntdll!ZwWaitForSingleObject+0xa:
    00000000`76ec12fa c3 ret
    0:005> .sympath srv*c:\Websymbols*http://msdl.microsoft.com/download/symbols;
    Symbol search path is: srv*c:\Websymbols*http://msdl.microsoft.com/download/symbols
    Expanded Symbol search path is: srv*c:\websymbols*http://msdl.microsoft.com/download/symbols
    0:005> .reload /f
    .Unable to load image C:\Program Files\Microsoft SQL Server\MSSQL10.AE\MSSQL\Binn\sqlservr.exe, Win32 error 0n2
    *** WARNING: Unable to verify timestamp for sqlservr.exe
    ……….Unable to load image C:\Program Files\Microsoft SQL Server\MSSQL10.AE\MSSQL\Binn\sqlos.dll, Win32 error 0n2
    *** WARNING: Unable to verify timestamp for sqlos.dll
    …………Unable to load image C:\Program Files\Microsoft SQL Server\MSSQL10.AE\MSSQL\Binn\opends60.dll, Win32 error 0n2
    *** WARNING: Unable to verify timestamp for opends60.dll
    …….Unable to load image C:\Program Files\Microsoft SQL Server\MSSQL10.AE\MSSQL\Binn\BatchParser.dll, Win32 error 0n2
    *** WARNING: Unable to verify timestamp for BatchParser.dll

    Press ctrl-c (cdb, kd, ntsd) or ctrl-break (windbg) to abort symbol loads that take too long.
    Run !sym noisy before .reload to track down problems loading symbols.

    ….*** ERROR: Symbol file could not be found. Defaulted to export symbols for instapi10.dll –
    …..Unable to load image c:\Program Files\Microsoft SQL Server\MSSQL10.AE\MSSQL\Binn\Resources\1033\sqlevn70.rll, Win32 error 0n2
    *** WARNING: Unable to verify timestamp for sqlevn70.rll
    *** ERROR: Module load completed but symbols could not be loaded for sqlevn70.rll
    …….Unable to load image C:\Windows\Microsoft.NET\Framework64\v4.0.30319\mscoreei.dll, Win32 error 0n2
    *** WARNING: Unable to verify timestamp for mscoreei.dll
    …………Unable to load image c:\Program Files\Microsoft SQL Server\MSSQL10.AE\MSSQL\Binn\ftimport.dll, Win32 error 0n2
    *** WARNING: Unable to verify timestamp for ftimport.dll
    .Unable to load image C:\Program Files\Microsoft SQL Server\MSSQL10.AE\MSSQL\Binn\msfte.dll, Win32 error 0n2
    *** WARNING: Unable to verify timestamp for msfte.dll
    *** ERROR: Module load completed but symbols could not be loaded for msfte.dll
    …..
    ……………Unable to load image c:\Windows\System32\sqlncli10.dll, Win32 error 0n2
    *** WARNING: Unable to verify timestamp for sqlncli10.dll
    ….Unable to load image c:\Windows\System32\1033\SQLNCLIR10.RLL, Win32 error 0n2
    *** WARNING: Unable to verify timestamp for SQLNCLIR10.RLL
    *** ERROR: Module load completed but symbols could not be loaded for SQLNCLIR10.RLL
    .Unable to load image C:\Program Files\Microsoft SQL Server\MSSQL10.AE\MSSQL\Binn\xpsqlbot.dll, Win32 error 0n2
    *** WARNING: Unable to verify timestamp for xpsqlbot.dll
    .Unable to load image c:\Program Files\Microsoft SQL Server\MSSQL10.AE\MSSQL\Binn\XPStar.DLL, Win32 error 0n2
    *** WARNING: Unable to verify timestamp for XPStar.DLL
    .Unable to load image C:\Program Files\Microsoft SQL Server\MSSQL10.AE\MSSQL\Binn\sqlscm.dll, Win32 error 0n2
    *** WARNING: Unable to verify timestamp for sqlscm.dll
    …Unable to load image C:\Windows\System32\odbcint.dll, Win32 error 0n2
    *** WARNING: Unable to verify timestamp for odbcint.dll
    *** ERROR: Module load completed but symbols could not be loaded for odbcint.dll
    .Unable to load image c:\Program Files\Microsoft SQL Server\MSSQL10.AE\MSSQL\Binn\Resources\1033\XPStar.RLL, Win32 error 0n2
    *** WARNING: Unable to verify timestamp for XPStar.RLL
    *** ERROR: Module load completed but symbols could not be loaded for XPStar.RLL
    .Unable to load image c:\Program Files\Microsoft SQL Server\MSSQL10.AE\MSSQL\Binn\xplog70.dll, Win32 error 0n2
    *** WARNING: Unable to verify timestamp for xplog70.dll
    .Unable to load image C:\Program Files\Microsoft SQL Server\MSSQL10.AE\MSSQL\Binn\Resources\1033\xplog70.rll, Win32 error 0n2
    *** WARNING: Unable to verify timestamp for xplog70.rll
    *** ERROR: Module load completed but symbols could not be loaded for xplog70.rll
    ..Unable to load image C:\Windows\assembly\NativeImages_v2.0.50727_64\mscorlib\51a23687fdafc32b697f5a719e364651\mscorlib.ni.dll, Win32 error 0n2
    *** WARNING: Unable to verify checksum for mscorlib.ni.dll
    …………..Unable to load image C:\Program Files\Microsoft SQL Server\MSSQL10.AE\MSSQL\Binn\SqlAccess.dll, Win32 error 0n2
    …Unable to load image C:\Windows\assembly\NativeImages_v2.0.50727_64\System\2a03a77295ec434da3b6b7950f8f6e1a\System.ni.dll, Win32 error 0n2
    *** WARNING: Unable to verify checksum for System.ni.dll
    ..Unable to load image C:\Windows\assembly\NativeImages_v2.0.50727_64\System.Security\c8cf5dc083632e24c4d00072ead615a4\System.Security.ni.dll, Win32 error 0n2
    *** WARNING: Unable to verify checksum for System.Security.ni.dll
    …..Unable to load image C:\Windows\System32\comres.dll, Win32 error 0n2
    *** WARNING: Unable to verify timestamp for comres.dll
    *** ERROR: Module load completed but symbols could not be loaded for comres.dll
    ……….
    ..Unable to load image c:\Program Files\Microsoft SQL Server\MSSQL10.AE\MSSQL\Binn\ODSOLE70.dll, Win32 error 0n2
    *** WARNING: Unable to verify timestamp for ODSOLE70.dll
    ..*** ERROR: Symbol file could not be found. Defaulted to export symbols for instapi.dll –

    Loading unloaded module list
    ……………………………………………………………
    0:005> lmvm sqlservr
    start end module name
    00000000`00670000 00000000`03f38000 sqlservr T (pdb symbols) c:\websymbols\sqlservr.pdb\1BEDD4651F75476C9DD6B51AD7886F2C2\sqlservr.pdb
    Loaded symbol image file: sqlservr.exe
    Image path: C:\Program Files\Microsoft SQL Server\MSSQL10.AE\MSSQL\Binn\sqlservr.exe
    Image name: sqlservr.exe
    Timestamp: Wed May 29 12:40:49 2013 (51A5A9F9)
    CheckSum: 037AB286
    ImageSize: 038C8000
    File version: 2007.100.5841.0
    Product version: 10.0.5841.0
    File flags: 0 (Mask 3F)
    File OS: 40000 NT Base
    File type: 1.0 App
    File date: 00000000.00000000
    Translations: 0000.04b0 0000.04e4 0409.04b0 0409.04e4
    0:005> ~*kL 20

    0 Id: 2c4.1118 Suspend: 0 Teb: 000007ff`fffde000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`003eefc8 000007fe`fd0810dc ntdll!ZwWaitForSingleObject+0xa
    00000000`003eefd0 000007fe`fef9affb KERNELBASE!WaitForSingleObjectEx+0x79
    00000000`003ef070 000007fe`fef99d61 sechost!ScSendResponseReceiveControls+0x13b
    00000000`003ef160 000007fe`fef99c16 sechost!ScDispatcherLoop+0x121
    00000000`003ef270 00000000`00973f67 sechost!StartServiceCtrlDispatcherW+0x14e
    00000000`003ef2c0 00000000`00f0b000 sqlservr!wmain+0x347
    00000000`003efa10 00000000`76d6652d sqlservr!NtCurrentTeb+0x1a0
    00000000`003efa40 00000000`76e9c541 kernel32!BaseThreadInitThunk+0xd
    00000000`003efa70 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    1 Id: 2c4.88c Suspend: 0 Teb: 000007ff`fffd5000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`057cf608 00000000`76e8b037 ntdll!NtWaitForMultipleObjects+0xa
    00000000`057cf610 00000000`76d6652d ntdll!TppWaiterpThread+0x14d
    00000000`057cf8b0 00000000`76e9c541 kernel32!BaseThreadInitThunk+0xd
    00000000`057cf8e0 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    2 Id: 2c4.ff0 Suspend: 0 Teb: 000007ff`fffae000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`109ff4f8 00000000`76dc2d60 ntdll!NtSignalAndWaitForSingleObject+0xa
    00000000`109ff500 00000000`00674669 kernel32!SignalObjectAndWait+0x110
    00000000`109ff5b0 00000000`007b14c2 sqlservr!SOS_Scheduler::SwitchContext+0x968
    00000000`109ff870 00000000`0067cc1b sqlservr!SOS_Scheduler::Idle+0xa2
    00000000`109ff8a0 00000000`0067dffa sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`109ff9c0 00000000`0067cd69 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`109ffa50 00000000`00b49940 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`109ffac0 00000000`00b48c30 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`109ffb80 00000000`00b47426 sqlservr!SystemThread::RunWorker+0x60
    00000000`109ffbb0 00000000`00b49c4f sqlservr!SystemThreadDispatcher::ProcessWorker+0x130
    00000000`109ffc40 00000000`74ac37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`109ffcd0 00000000`74ac3894 msvcr80!endthreadex+0x47
    00000000`109ffd00 00000000`76d6652d msvcr80!endthreadex+0x104
    00000000`109ffd30 00000000`76e9c541 kernel32!BaseThreadInitThunk+0xd
    00000000`109ffd60 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    3 Id: 2c4.f14 Suspend: 0 Teb: 000007ff`fffac000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`10c3c478 000007fe`fd0810dc ntdll!ZwWaitForSingleObject+0xa
    00000000`10c3c480 00000000`0068ceea KERNELBASE!WaitForSingleObjectEx+0x79
    00000000`10c3c520 00000000`00674485 sqlservr!SOS_Scheduler::SwitchContext+0x72f
    00000000`10c3c7e0 00000000`00673db6 sqlservr!SOS_Scheduler::SuspendNonPreemptive+0xc5
    00000000`10c3c820 00000000`00689902 sqlservr!EventInternal<Spinlock >::Wait+0x436
    00000000`10c3ce10 00000000`02b46488 sqlservr!BPool::LazyWriter+0x4d7
    00000000`10c3f270 00000000`0067cc1b sqlservr!lazywriter+0x2c8
    00000000`10c3f760 00000000`0067dffa sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`10c3f880 00000000`0067cd69 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`10c3f910 00000000`00b49940 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`10c3f980 00000000`00b48c30 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`10c3fa40 00000000`00b47426 sqlservr!SystemThread::RunWorker+0x60
    00000000`10c3fa70 00000000`00b49c4f sqlservr!SystemThreadDispatcher::ProcessWorker+0x130
    00000000`10c3fb00 00000000`74ac37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`10c3fb90 00000000`74ac3894 msvcr80!endthreadex+0x47
    00000000`10c3fbc0 00000000`76d6652d msvcr80!endthreadex+0x104
    00000000`10c3fbf0 00000000`76e9c541 kernel32!BaseThreadInitThunk+0xd
    00000000`10c3fc20 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    4 Id: 2c4.eac Suspend: 0 Teb: 000007ff`fffaa000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`1101f1b8 00000000`76dc2d60 ntdll!NtSignalAndWaitForSingleObject+0xa
    00000000`1101f1c0 00000000`00674669 kernel32!SignalObjectAndWait+0x110
    00000000`1101f270 00000000`007b14c2 sqlservr!SOS_Scheduler::SwitchContext+0x968
    00000000`1101f530 00000000`0067cc1b sqlservr!SOS_Scheduler::Idle+0xa2
    00000000`1101f560 00000000`0067dffa sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`1101f680 00000000`0067cd69 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`1101f710 00000000`00b49940 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`1101f780 00000000`00b48c30 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`1101f840 00000000`00b47426 sqlservr!SystemThread::RunWorker+0x60
    00000000`1101f870 00000000`00b49c4f sqlservr!SystemThreadDispatcher::ProcessWorker+0x130
    00000000`1101f900 00000000`74ac37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`1101f990 00000000`74ac3894 msvcr80!endthreadex+0x47
    00000000`1101f9c0 00000000`76d6652d msvcr80!endthreadex+0x104
    00000000`1101f9f0 00000000`76e9c541 kernel32!BaseThreadInitThunk+0xd
    00000000`1101fa20 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    # 5 Id: 2c4.16a0 Suspend: 0 Teb: 000007ff`fffa8000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`113ed988 000007fe`fd0810dc ntdll!ZwWaitForSingleObject+0xa
    00000000`113ed990 00000000`0144aab9 KERNELBASE!WaitForSingleObjectEx+0x79
    00000000`113eda30 00000000`0144a47b sqlservr!CDmpDump::DumpInternal+0x4d9
    00000000`113edb30 00000000`01e3d240 sqlservr!CDmpDump::Dump+0x3b
    00000000`113edb80 00000000`01ef772e sqlservr!SQLDumperLibraryInvoke+0x1a0
    00000000`113edbb0 00000000`020489b0 sqlservr!CImageHelper::DoMiniDump+0x3ce
    00000000`113edd90 00000000`02052bbb sqlservr!stackTrace+0x710
    00000000`113ef2c0 00000000`01e15cd7 sqlservr!SQL_SOSDeadlockSchedulersCallback+0xab
    00000000`113ef330 00000000`00d33c2f sqlservr!SOS_OS::ExecuteDeadlockSchedulerCallbacks+0xb7
    00000000`113ef5f0 00000000`006a48c2 sqlservr!alloca_probe+0x404992
    00000000`113ef780 00000000`02df66c9 sqlservr!SchedulerMonitor::Run+0xfe
    00000000`113ef8a0 00000000`0067cc1b sqlservr!SchedulerMonitor::EntryPoint+0x9
    00000000`113ef8d0 00000000`0067dffa sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`113ef9f0 00000000`0067cd69 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`113efa80 00000000`00b49940 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`113efaf0 00000000`00b48c30 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`113efbb0 00000000`00b47426 sqlservr!SystemThread::RunWorker+0x60
    00000000`113efbe0 00000000`00b49c4f sqlservr!SystemThreadDispatcher::ProcessWorker+0x130
    00000000`113efc70 00000000`74ac37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`113efd00 00000000`74ac3894 msvcr80!endthreadex+0x47
    00000000`113efd30 00000000`76d6652d msvcr80!endthreadex+0x104
    00000000`113efd60 00000000`76e9c541 kernel32!BaseThreadInitThunk+0xd
    00000000`113efd90 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    6 Id: 2c4.914 Suspend: 0 Teb: 000007ff`fffa6000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`117af138 00000000`76dc2d60 ntdll!NtSignalAndWaitForSingleObject+0xa
    00000000`117af140 00000000`00674669 kernel32!SignalObjectAndWait+0x110
    00000000`117af1f0 00000000`007b14c2 sqlservr!SOS_Scheduler::SwitchContext+0x968
    00000000`117af4b0 00000000`0067cc1b sqlservr!SOS_Scheduler::Idle+0xa2
    00000000`117af4e0 00000000`0067dffa sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`117af600 00000000`0067cd69 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`117af690 00000000`00b49940 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`117af700 00000000`00b48c30 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`117af7c0 00000000`00b47426 sqlservr!SystemThread::RunWorker+0x60
    00000000`117af7f0 00000000`00b49c4f sqlservr!SystemThreadDispatcher::ProcessWorker+0x130
    00000000`117af880 00000000`74ac37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`117af910 00000000`74ac3894 msvcr80!endthreadex+0x47
    00000000`117af940 00000000`76d6652d msvcr80!endthreadex+0x104
    00000000`117af970 00000000`76e9c541 kernel32!BaseThreadInitThunk+0xd
    00000000`117af9a0 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    7 Id: 2c4.99c Suspend: 0 Teb: 000007ff`fffa4000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`11aae878 00000000`76dc2d60 ntdll!NtSignalAndWaitForSingleObject+0xa
    00000000`11aae880 00000000`00674669 kernel32!SignalObjectAndWait+0x110
    00000000`11aae930 00000000`00674485 sqlservr!SOS_Scheduler::SwitchContext+0x968
    00000000`11aaebf0 00000000`00673db6 sqlservr!SOS_Scheduler::SuspendNonPreemptive+0xc5
    00000000`11aaec30 00000000`02f1b3ab sqlservr!EventInternal<Spinlock >::Wait+0x436
    00000000`11aaf220 00000000`02f478a9 sqlservr!SignalProc+0x1cb
    00000000`11aaf480 00000000`0067cc1b sqlservr!StartUp::InitDBMS+0x189
    00000000`11aaf5c0 00000000`0067dffa sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`11aaf6e0 00000000`0067cd69 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`11aaf770 00000000`00b49940 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`11aaf7e0 00000000`00b48c30 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`11aaf8a0 00000000`00b47426 sqlservr!SystemThread::RunWorker+0x60
    00000000`11aaf8d0 00000000`00b49c4f sqlservr!SystemThreadDispatcher::ProcessWorker+0x130
    00000000`11aaf960 00000000`74ac37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`11aaf9f0 00000000`74ac3894 msvcr80!endthreadex+0x47
    00000000`11aafa20 00000000`76d6652d msvcr80!endthreadex+0x104
    00000000`11aafa50 00000000`76e9c541 kernel32!BaseThreadInitThunk+0xd
    00000000`11aafa80 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    8 Id: 2c4.688 Suspend: 0 Teb: 000007ff`fffa2000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`11e4f268 000007fe`fd0810dc ntdll!ZwWaitForSingleObject+0xa
    00000000`11e4f270 00000000`0068ceea KERNELBASE!WaitForSingleObjectEx+0x79
    00000000`11e4f310 00000000`007b14c2 sqlservr!SOS_Scheduler::SwitchContext+0x72f
    00000000`11e4f5d0 00000000`0067cc1b sqlservr!SOS_Scheduler::Idle+0xa2
    00000000`11e4f600 00000000`0067dffa sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`11e4f720 00000000`0067cd69 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`11e4f7b0 00000000`00b49940 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`11e4f820 00000000`00b48c30 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`11e4f8e0 00000000`00b47426 sqlservr!SystemThread::RunWorker+0x60
    00000000`11e4f910 00000000`00b49c4f sqlservr!SystemThreadDispatcher::ProcessWorker+0x130
    00000000`11e4f9a0 00000000`74ac37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`11e4fa30 00000000`74ac3894 msvcr80!endthreadex+0x47
    00000000`11e4fa60 00000000`76d6652d msvcr80!endthreadex+0x104
    00000000`11e4fa90 00000000`76e9c541 kernel32!BaseThreadInitThunk+0xd
    00000000`11e4fac0 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    9 Id: 2c4.1358 Suspend: 0 Teb: 000007ff`fffa0000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`1215eae8 00000000`76dc2d60 ntdll!NtSignalAndWaitForSingleObject+0xa
    00000000`1215eaf0 00000000`00674669 kernel32!SignalObjectAndWait+0x110
    00000000`1215eba0 00000000`00674485 sqlservr!SOS_Scheduler::SwitchContext+0x968
    00000000`1215ee60 00000000`00673db6 sqlservr!SOS_Scheduler::SuspendNonPreemptive+0xc5
    00000000`1215eea0 00000000`0068d6bd sqlservr!EventInternal<Spinlock >::Wait+0x436
    00000000`1215f490 00000000`01f25c79 sqlservr!ResQueueBase::Dequeue+0x19d
    00000000`1215f550 00000000`02b434f9 sqlservr!ResQueue::Dequeue+0x19
    00000000`1215f580 00000000`0067cc1b sqlservr!systemTaskThread+0x309
    00000000`1215fa90 00000000`0067dffa sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`1215fbb0 00000000`0067cd69 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`1215fc40 00000000`00b49940 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`1215fcb0 00000000`00b48c30 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`1215fd70 00000000`00b47426 sqlservr!SystemThread::RunWorker+0x60
    00000000`1215fda0 00000000`00b49c4f sqlservr!SystemThreadDispatcher::ProcessWorker+0x130
    00000000`1215fe30 00000000`74ac37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`1215fec0 00000000`74ac3894 msvcr80!endthreadex+0x47
    00000000`1215fef0 00000000`76d6652d msvcr80!endthreadex+0x104
    00000000`1215ff20 00000000`76e9c541 kernel32!BaseThreadInitThunk+0xd
    00000000`1215ff50 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    10 Id: 2c4.fc0 Suspend: 0 Teb: 000007ff`fff9e000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`1254f548 00000000`76dc2d60 ntdll!NtSignalAndWaitForSingleObject+0xa
    00000000`1254f550 00000000`00674669 kernel32!SignalObjectAndWait+0x110
    00000000`1254f600 00000000`007b14c2 sqlservr!SOS_Scheduler::SwitchContext+0x968
    00000000`1254f8c0 00000000`0067cc1b sqlservr!SOS_Scheduler::Idle+0xa2
    00000000`1254f8f0 00000000`0067dffa sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`1254fa10 00000000`0067cd69 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`1254faa0 00000000`00b49940 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`1254fb10 00000000`00b48c30 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`1254fbd0 00000000`00b47426 sqlservr!SystemThread::RunWorker+0x60
    00000000`1254fc00 00000000`00b49c4f sqlservr!SystemThreadDispatcher::ProcessWorker+0x130
    00000000`1254fc90 00000000`74ac37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`1254fd20 00000000`74ac3894 msvcr80!endthreadex+0x47
    00000000`1254fd50 00000000`76d6652d msvcr80!endthreadex+0x104
    00000000`1254fd80 00000000`76e9c541 kernel32!BaseThreadInitThunk+0xd
    00000000`1254fdb0 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    11 Id: 2c4.870 Suspend: 0 Teb: 000007ff`fff9c000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`127ec768 00000000`76dc2d60 ntdll!NtSignalAndWaitForSingleObject+0xa
    00000000`127ec770 00000000`00674669 kernel32!SignalObjectAndWait+0x110
    00000000`127ec820 00000000`00674485 sqlservr!SOS_Scheduler::SwitchContext+0x968
    00000000`127ecae0 00000000`00673db6 sqlservr!SOS_Scheduler::SuspendNonPreemptive+0xc5
    00000000`127ecb20 00000000`00f01747 sqlservr!EventInternal<Spinlock >::Wait+0x436
    00000000`127ed110 00000000`0083431a sqlservr!LC::WaitForMemBlk+0x87
    00000000`127ed190 00000000`006baa61 sqlservr!SQLServerLogMgr::AppendLogRequest+0x31f
    00000000`127ed270 00000000`006bb154 sqlservr!SQLServerLogMgr::ReserveAndAppend+0x5d
    00000000`127ed3a0 00000000`006bbbcd sqlservr!XdesRMReadWrite::GenerateLogRec+0x2e4
    00000000`127ed560 00000000`006bb9c4 sqlservr!XdesRMReadWrite::LogBeginXact+0x1fd
    00000000`127ed6c0 00000000`006bb90f sqlservr!XdesRMReadWrite::MakeActive+0x68
    00000000`127ed6f0 00000000`0153beef sqlservr!XdesRMReadWrite::GenerateLogRec+0x50b
    00000000`127ed8b0 00000000`00bf99f1 sqlservr!alloca_probe+0x12446f
    00000000`127eda20 00000000`0079d877 sqlservr!MDL::FLockObjectId+0x1c2
    00000000`127edab0 00000000`0079d63e sqlservr!MDAutoObjectLock::Acquire+0x27
    00000000`127edaf0 00000000`0079d9b9 sqlservr!CMEDCatalogObject::GetCachedObjectById+0x9e
    00000000`127edb90 00000000`0070897d sqlservr!CMEDProxyDatabase::GetObjectByObjectId+0x65
    00000000`127edbe0 00000000`007084db sqlservr!CTempTableCacheObject::GetTempTableWithXactPin+0xdd
    00000000`127edcb0 00000000`0239f42f sqlservr!CTableCreate::LCreateImpl+0x51b
    00000000`127ee120 00000000`0239f9d7 sqlservr!CStmtCreateTable::XretCreateTableExecute+0x18f
    00000000`127ee290 00000000`023c9243 sqlservr!CXStmtCreateTableDDL::XretExecute+0x47
    00000000`127ee2d0 00000000`023ccf7a sqlservr!CExecStmtLoopVars::ExecuteXStmtAndSetXretReturn+0x13
    00000000`127ee300 00000000`017540f0 sqlservr!CMsqlExecContext::ExecuteStmts+0xbca
    00000000`127ef2b0 00000000`00774629 sqlservr!alloca_probe+0x3d87fc
    00000000`127ef430 00000000`00778d3f sqlservr!CSQLSource::Execute+0x319
    00000000`127ef560 00000000`0072fb2a sqlservr!process_request+0x371
    00000000`127ef820 00000000`0067cc1b sqlservr!process_commands+0x1ba
    00000000`127efa20 00000000`0067dffa sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`127efb40 00000000`0067cd69 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`127efbd0 00000000`00b49940 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`127efc40 00000000`00b48c30 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`127efd00 00000000`00b47426 sqlservr!SystemThread::RunWorker+0x60

    12 Id: 2c4.8a0 Suspend: 0 Teb: 000007ff`fff9a000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`12a0f1b8 00000000`76dc2d60 ntdll!NtSignalAndWaitForSingleObject+0xa
    00000000`12a0f1c0 00000000`00674669 kernel32!SignalObjectAndWait+0x110
    00000000`12a0f270 00000000`007b14c2 sqlservr!SOS_Scheduler::SwitchContext+0x968
    00000000`12a0f530 00000000`0067cc1b sqlservr!SOS_Scheduler::Idle+0xa2
    00000000`12a0f560 00000000`0067dffa sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`12a0f680 00000000`0067cd69 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`12a0f710 00000000`00b49940 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`12a0f780 00000000`00b48c30 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`12a0f840 00000000`00b47426 sqlservr!SystemThread::RunWorker+0x60
    00000000`12a0f870 00000000`00b49c4f sqlservr!SystemThreadDispatcher::ProcessWorker+0x130
    00000000`12a0f900 00000000`74ac37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`12a0f990 00000000`74ac3894 msvcr80!endthreadex+0x47
    00000000`12a0f9c0 00000000`76d6652d msvcr80!endthreadex+0x104
    00000000`12a0f9f0 00000000`76e9c541 kernel32!BaseThreadInitThunk+0xd
    00000000`12a0fa20 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    13 Id: 2c4.108c Suspend: 0 Teb: 000007ff`fff96000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`130bf408 00000000`76dc2d60 ntdll!NtSignalAndWaitForSingleObject+0xa
    00000000`130bf410 00000000`00674669 kernel32!SignalObjectAndWait+0x110
    00000000`130bf4c0 00000000`007b14c2 sqlservr!SOS_Scheduler::SwitchContext+0x968
    00000000`130bf780 00000000`0067cc1b sqlservr!SOS_Scheduler::Idle+0xa2
    00000000`130bf7b0 00000000`0067dffa sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`130bf8d0 00000000`0067cd69 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`130bf960 00000000`00b49940 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`130bf9d0 00000000`00b48c30 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`130bfa90 00000000`00b47426 sqlservr!SystemThread::RunWorker+0x60
    00000000`130bfac0 00000000`00b49c4f sqlservr!SystemThreadDispatcher::ProcessWorker+0x130
    00000000`130bfb50 00000000`74ac37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`130bfbe0 00000000`74ac3894 msvcr80!endthreadex+0x47
    00000000`130bfc10 00000000`76d6652d msvcr80!endthreadex+0x104
    00000000`130bfc40 00000000`76e9c541 kernel32!BaseThreadInitThunk+0xd
    00000000`130bfc70 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    14 Id: 2c4.1658 Suspend: 0 Teb: 000007ff`fff92000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`1361f1f8 00000000`76dc2d60 ntdll!NtSignalAndWaitForSingleObject+0xa
    00000000`1361f200 00000000`00674669 kernel32!SignalObjectAndWait+0x110
    00000000`1361f2b0 00000000`007b14c2 sqlservr!SOS_Scheduler::SwitchContext+0x968
    00000000`1361f570 00000000`0067cc1b sqlservr!SOS_Scheduler::Idle+0xa2
    00000000`1361f5a0 00000000`0067dffa sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`1361f6c0 00000000`0067cd69 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`1361f750 00000000`00b49940 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`1361f7c0 00000000`00b48c30 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`1361f880 00000000`00b47426 sqlservr!SystemThread::RunWorker+0x60
    00000000`1361f8b0 00000000`00b49c4f sqlservr!SystemThreadDispatcher::ProcessWorker+0x130
    00000000`1361f940 00000000`74ac37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`1361f9d0 00000000`74ac3894 msvcr80!endthreadex+0x47
    00000000`1361fa00 00000000`76d6652d msvcr80!endthreadex+0x104
    00000000`1361fa30 00000000`76e9c541 kernel32!BaseThreadInitThunk+0xd
    00000000`1361fa60 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    15 Id: 2c4.126c Suspend: 0 Teb: 000007ff`fff90000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`139dc458 00000000`76dc2d60 ntdll!NtSignalAndWaitForSingleObject+0xa
    00000000`139dc460 00000000`00674669 kernel32!SignalObjectAndWait+0x110
    00000000`139dc510 00000000`00674485 sqlservr!SOS_Scheduler::SwitchContext+0x968
    00000000`139dc7d0 00000000`00673db6 sqlservr!SOS_Scheduler::SuspendNonPreemptive+0xc5
    00000000`139dc810 00000000`00f01747 sqlservr!EventInternal<Spinlock >::Wait+0x436
    00000000`139dce00 00000000`0083431a sqlservr!LC::WaitForMemBlk+0x87
    00000000`139dce80 00000000`006baa61 sqlservr!SQLServerLogMgr::AppendLogRequest+0x31f
    00000000`139dcf60 00000000`006bb154 sqlservr!SQLServerLogMgr::ReserveAndAppend+0x5d
    00000000`139dd090 00000000`006bbbcd sqlservr!XdesRMReadWrite::GenerateLogRec+0x2e4
    00000000`139dd250 00000000`006bb9c4 sqlservr!XdesRMReadWrite::LogBeginXact+0x1fd
    00000000`139dd3b0 00000000`006bb90f sqlservr!XdesRMReadWrite::MakeActive+0x68
    00000000`139dd3e0 00000000`0153beef sqlservr!XdesRMReadWrite::GenerateLogRec+0x50b
    00000000`139dd5a0 00000000`00bf99f1 sqlservr!alloca_probe+0x12446f
    00000000`139dd710 00000000`00896f44 sqlservr!MDL::FLockObjectId+0x1c2
    00000000`139dd7a0 00000000`008971ed sqlservr!CMEDCatalogObject::FPersistObject+0x174
    00000000`139dd810 00000000`008a224d sqlservr!CMEDProxySchema::CreateObject+0xfd
    00000000`139dd890 00000000`0239f42f sqlservr!CTableCreate::LCreateImpl+0x70c
    00000000`139ddd00 00000000`0239f9d7 sqlservr!CStmtCreateTable::XretCreateTableExecute+0x18f
    00000000`139dde70 00000000`023c9243 sqlservr!CXStmtCreateTableDDL::XretExecute+0x47
    00000000`139ddeb0 00000000`023ccf7a sqlservr!CExecStmtLoopVars::ExecuteXStmtAndSetXretReturn+0x13
    00000000`139ddee0 00000000`017540f0 sqlservr!CMsqlExecContext::ExecuteStmts+0xbca
    00000000`139dee90 00000000`00774629 sqlservr!alloca_probe+0x3d87fc
    00000000`139df010 00000000`00778d3f sqlservr!CSQLSource::Execute+0x319
    00000000`139df140 00000000`0072fb2a sqlservr!process_request+0x371
    00000000`139df400 00000000`0067cc1b sqlservr!process_commands+0x1ba
    00000000`139df600 00000000`0067dffa sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`139df720 00000000`0067cd69 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`139df7b0 00000000`00b49940 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`139df820 00000000`00b48c30 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`139df8e0 00000000`00b47426 sqlservr!SystemThread::RunWorker+0x60
    00000000`139df910 00000000`00b49c4f sqlservr!SystemThreadDispatcher::ProcessWorker+0x130
    00000000`139df9a0 00000000`74ac37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f

    16 Id: 2c4.41c Suspend: 0 Teb: 000007ff`fff8e000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`13bef268 00000000`76dc2d60 ntdll!NtSignalAndWaitForSingleObject+0xa
    00000000`13bef270 00000000`00674669 kernel32!SignalObjectAndWait+0x110
    00000000`13bef320 00000000`007b14c2 sqlservr!SOS_Scheduler::SwitchContext+0x968
    00000000`13bef5e0 00000000`0067cc1b sqlservr!SOS_Scheduler::Idle+0xa2
    00000000`13bef610 00000000`0067dffa sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`13bef730 00000000`0067cd69 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`13bef7c0 00000000`00b49940 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`13bef830 00000000`00b48c30 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`13bef8f0 00000000`00b47426 sqlservr!SystemThread::RunWorker+0x60
    00000000`13bef920 00000000`00b49c4f sqlservr!SystemThreadDispatcher::ProcessWorker+0x130
    00000000`13bef9b0 00000000`74ac37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`13befa40 00000000`74ac3894 msvcr80!endthreadex+0x47
    00000000`13befa70 00000000`76d6652d msvcr80!endthreadex+0x104
    00000000`13befaa0 00000000`76e9c541 kernel32!BaseThreadInitThunk+0xd
    00000000`13befad0 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    17 Id: 2c4.e6c Suspend: 0 Teb: 000007ff`fff8a000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`141cf018 00000000`76dc2d60 ntdll!NtSignalAndWaitForSingleObject+0xa
    00000000`141cf020 00000000`00674669 kernel32!SignalObjectAndWait+0x110
    00000000`141cf0d0 00000000`007b14c2 sqlservr!SOS_Scheduler::SwitchContext+0x968
    00000000`141cf390 00000000`0067cc1b sqlservr!SOS_Scheduler::Idle+0xa2
    00000000`141cf3c0 00000000`0067dffa sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`141cf4e0 00000000`0067cd69 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`141cf570 00000000`00b49940 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`141cf5e0 00000000`00b48c30 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`141cf6a0 00000000`00b47426 sqlservr!SystemThread::RunWorker+0x60
    00000000`141cf6d0 00000000`00b49c4f sqlservr!SystemThreadDispatcher::ProcessWorker+0x130
    00000000`141cf760 00000000`74ac37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`141cf7f0 00000000`74ac3894 msvcr80!endthreadex+0x47
    00000000`141cf820 00000000`76d6652d msvcr80!endthreadex+0x104
    00000000`141cf850 00000000`76e9c541 kernel32!BaseThreadInitThunk+0xd
    00000000`141cf880 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    18 Id: 2c4.f74 Suspend: 0 Teb: 000007ff`fff86000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`1484f0f8 000007fe`fd0810dc ntdll!ZwWaitForSingleObject+0xa
    00000000`1484f100 00000000`0068ceea KERNELBASE!WaitForSingleObjectEx+0x79
    00000000`1484f1a0 00000000`007b14c2 sqlservr!SOS_Scheduler::SwitchContext+0x72f
    00000000`1484f460 00000000`0067cc1b sqlservr!SOS_Scheduler::Idle+0xa2
    00000000`1484f490 00000000`0067dffa sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`1484f5b0 00000000`0067cd69 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`1484f640 00000000`00b49940 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`1484f6b0 00000000`00b48c30 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`1484f770 00000000`00b47426 sqlservr!SystemThread::RunWorker+0x60
    00000000`1484f7a0 00000000`00b49c4f sqlservr!SystemThreadDispatcher::ProcessWorker+0x130
    00000000`1484f830 00000000`74ac37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`1484f8c0 00000000`74ac3894 msvcr80!endthreadex+0x47
    00000000`1484f8f0 00000000`76d6652d msvcr80!endthreadex+0x104
    00000000`1484f920 00000000`76e9c541 kernel32!BaseThreadInitThunk+0xd
    00000000`1484f950 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    19 Id: 2c4.15ac Suspend: 0 Teb: 000007ff`fff82000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`14ecf438 00000000`76dc2d60 ntdll!NtSignalAndWaitForSingleObject+0xa
    00000000`14ecf440 00000000`00674669 kernel32!SignalObjectAndWait+0x110
    00000000`14ecf4f0 00000000`007b14c2 sqlservr!SOS_Scheduler::SwitchContext+0x968
    00000000`14ecf7b0 00000000`0067cc1b sqlservr!SOS_Scheduler::Idle+0xa2
    00000000`14ecf7e0 00000000`0067dffa sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`14ecf900 00000000`0067cd69 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`14ecf990 00000000`00b49940 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`14ecfa00 00000000`00b48c30 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`14ecfac0 00000000`00b47426 sqlservr!SystemThread::RunWorker+0x60
    00000000`14ecfaf0 00000000`00b49c4f sqlservr!SystemThreadDispatcher::ProcessWorker+0x130
    00000000`14ecfb80 00000000`74ac37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`14ecfc10 00000000`74ac3894 msvcr80!endthreadex+0x47
    00000000`14ecfc40 00000000`76d6652d msvcr80!endthreadex+0x104
    00000000`14ecfc70 00000000`76e9c541 kernel32!BaseThreadInitThunk+0xd
    00000000`14ecfca0 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    20 Id: 2c4.1618 Suspend: 0 Teb: 000007ff`fff80000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`151af0e8 000007fe`fd0816ad ntdll!NtRemoveIoCompletion+0xa
    00000000`151af0f0 00000000`76d5a4e1 KERNELBASE!GetQueuedCompletionStatus+0x39
    00000000`151af150 00000000`0072fe77 kernel32!GetQueuedCompletionStatusStub+0x11
    00000000`151af190 00000000`0067cc1b sqlservr!SOS_Node::ListenOnIOCompletionPort+0x137
    00000000`151af320 00000000`0067dffa sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`151af440 00000000`0067cd69 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`151af4d0 00000000`00b49940 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`151af540 00000000`00b48c30 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`151af600 00000000`00b47426 sqlservr!SystemThread::RunWorker+0x60
    00000000`151af630 00000000`00b49c4f sqlservr!SystemThreadDispatcher::ProcessWorker+0x130
    00000000`151af6c0 00000000`74ac37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`151af750 00000000`74ac3894 msvcr80!endthreadex+0x47
    00000000`151af780 00000000`76d6652d msvcr80!endthreadex+0x104
    00000000`151af7b0 00000000`76e9c541 kernel32!BaseThreadInitThunk+0xd
    00000000`151af7e0 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    21 Id: 2c4.1224 Suspend: 0 Teb: 000007ff`fff7e000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`1557f108 000007fe`fd081430 ntdll!NtWaitForMultipleObjects+0xa
    00000000`1557f110 00000000`76d61220 KERNELBASE!WaitForMultipleObjectsEx+0xe8
    00000000`1557f210 00000000`01ef1530 kernel32!WaitForMultipleObjects+0xb0
    00000000`1557f2a0 00000000`01ef69bb sqlservr!XE_DispatcherQueue::Dequeue+0x90
    00000000`1557f370 00000000`02e948b9 sqlservr!SOS_DispatcherPool::Dequeue+0x5b
    00000000`1557f3a0 00000000`02e94a70 sqlservr!Dispatcher::Run+0x69
    00000000`1557f420 00000000`02af0bcf sqlservr!XE_Engine::DispatcherEntryPointWithContext+0x50
    00000000`1557f4c0 00000000`02e94b45 sqlservr!XESQLSetupThreadContext+0xff
    00000000`1557f5a0 00000000`02cdb70c sqlservr!XE_Engine::DispatcherEntryPoint+0x45
    00000000`1557f5e0 00000000`0067cc1b sqlservr!SOS_DispatcherPool::RunDispatcher+0x1c
    00000000`1557f610 00000000`0067dffa sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`1557f730 00000000`0067cd69 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`1557f7c0 00000000`00b49940 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`1557f830 00000000`00b48c30 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`1557f8f0 00000000`00b47426 sqlservr!SystemThread::RunWorker+0x60
    00000000`1557f920 00000000`00b49c4f sqlservr!SystemThreadDispatcher::ProcessWorker+0x130
    00000000`1557f9b0 00000000`74ac37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`1557fa40 00000000`74ac3894 msvcr80!endthreadex+0x47
    00000000`1557fa70 00000000`76d6652d msvcr80!endthreadex+0x104
    00000000`1557faa0 00000000`76e9c541 kernel32!BaseThreadInitThunk+0xd
    00000000`1557fad0 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    22 Id: 2c4.6f0 Suspend: 0 Teb: 000007ff`fff7c000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`1587edc8 000007fe`fd081430 ntdll!NtWaitForMultipleObjects+0xa
    00000000`1587edd0 00000000`76d61220 KERNELBASE!WaitForMultipleObjectsEx+0xe8
    00000000`1587eed0 00000000`0068df3d kernel32!WaitForMultipleObjects+0xb0
    00000000`1587ef60 00000000`027f8548 sqlservr!ResourceMonitor::CheckIndicators+0x181
    00000000`1587f010 00000000`02afa36b sqlservr!ResourceMonitor::ResourceMonitorTask+0x1b8
    00000000`1587f160 00000000`0067cc1b sqlservr!SetupResourceMonitorTaskContext+0x11b
    00000000`1587f4a0 00000000`0067dffa sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`1587f5c0 00000000`0067cd69 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`1587f650 00000000`00b49940 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`1587f6c0 00000000`00b48c30 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`1587f780 00000000`00b47426 sqlservr!SystemThread::RunWorker+0x60
    00000000`1587f7b0 00000000`00b49c4f sqlservr!SystemThreadDispatcher::ProcessWorker+0x130
    00000000`1587f840 00000000`74ac37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`1587f8d0 00000000`74ac3894 msvcr80!endthreadex+0x47
    00000000`1587f900 00000000`76d6652d msvcr80!endthreadex+0x104
    00000000`1587f930 00000000`76e9c541 kernel32!BaseThreadInitThunk+0xd
    00000000`1587f960 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    23 Id: 2c4.173c Suspend: 0 Teb: 000007ff`fff7a000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`260bd4a8 000007fe`fd0810dc ntdll!ZwWaitForSingleObject+0xa
    00000000`260bd4b0 00000000`0068ceea KERNELBASE!WaitForSingleObjectEx+0x79
    00000000`260bd550 00000000`00674485 sqlservr!SOS_Scheduler::SwitchContext+0x72f
    00000000`260bd810 00000000`00673db6 sqlservr!SOS_Scheduler::SuspendNonPreemptive+0xc5
    00000000`260bd850 00000000`0068d6bd sqlservr!EventInternal<Spinlock >::Wait+0x436
    00000000`260bde40 00000000`0072cf11 sqlservr!ResQueueBase::Dequeue+0x19d
    00000000`260bdf00 00000000`0067cc1b sqlservr!SQLServerLogMgr::LogWriter+0x1e8
    00000000`260bf400 00000000`0067dffa sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`260bf520 00000000`0067cd69 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`260bf5b0 00000000`00b49940 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`260bf620 00000000`00b48c30 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`260bf6e0 00000000`00b47426 sqlservr!SystemThread::RunWorker+0x60
    00000000`260bf710 00000000`00b49c4f sqlservr!SystemThreadDispatcher::ProcessWorker+0x130
    00000000`260bf7a0 00000000`74ac37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`260bf830 00000000`74ac3894 msvcr80!endthreadex+0x47
    00000000`260bf860 00000000`76d6652d msvcr80!endthreadex+0x104
    00000000`260bf890 00000000`76e9c541 kernel32!BaseThreadInitThunk+0xd
    00000000`260bf8c0 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    24 Id: 2c4.93c Suspend: 0 Teb: 000007ff`fff78000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`262defc8 000007fe`fd0810dc ntdll!ZwWaitForSingleObject+0xa
    00000000`262defd0 00000000`0068ceea KERNELBASE!WaitForSingleObjectEx+0x79
    00000000`262df070 00000000`00674485 sqlservr!SOS_Scheduler::SwitchContext+0x72f
    00000000`262df330 00000000`00673db6 sqlservr!SOS_Scheduler::SuspendNonPreemptive+0xc5
    00000000`262df370 00000000`0068d9de sqlservr!EventInternal<Spinlock >::Wait+0x436
    00000000`262df960 00000000`02aeffa3 sqlservr!CTraceManagementTask::Invoke+0x40
    00000000`262df9c0 00000000`0067cc1b sqlservr!CTraceBatchTask::Task+0x1a3
    00000000`262dfaa0 00000000`0067dffa sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`262dfbc0 00000000`0067cd69 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`262dfc50 00000000`00b49940 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`262dfcc0 00000000`00b48c30 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`262dfd80 00000000`00b47426 sqlservr!SystemThread::RunWorker+0x60
    00000000`262dfdb0 00000000`00b49c4f sqlservr!SystemThreadDispatcher::ProcessWorker+0x130
    00000000`262dfe40 00000000`74ac37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`262dfed0 00000000`74ac3894 msvcr80!endthreadex+0x47
    00000000`262dff00 00000000`76d6652d msvcr80!endthreadex+0x104
    00000000`262dff30 00000000`76e9c541 kernel32!BaseThreadInitThunk+0xd
    00000000`262dff60 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    25 Id: 2c4.14e0 Suspend: 0 Teb: 000007ff`fff76000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`2655c338 00000000`76dc2d60 ntdll!NtSignalAndWaitForSingleObject+0xa
    00000000`2655c340 00000000`00674669 kernel32!SignalObjectAndWait+0x110
    00000000`2655c3f0 00000000`00674485 sqlservr!SOS_Scheduler::SwitchContext+0x968
    00000000`2655c6b0 00000000`00673db6 sqlservr!SOS_Scheduler::SuspendNonPreemptive+0xc5
    00000000`2655c6f0 00000000`00f01747 sqlservr!EventInternal<Spinlock >::Wait+0x436
    00000000`2655cce0 00000000`0083431a sqlservr!LC::WaitForMemBlk+0x87
    00000000`2655cd60 00000000`006baa61 sqlservr!SQLServerLogMgr::AppendLogRequest+0x31f
    00000000`2655ce40 00000000`006bb154 sqlservr!SQLServerLogMgr::ReserveAndAppend+0x5d
    00000000`2655cf70 00000000`006bbbcd sqlservr!XdesRMReadWrite::GenerateLogRec+0x2e4
    00000000`2655d130 00000000`006bb9c4 sqlservr!XdesRMReadWrite::LogBeginXact+0x1fd
    00000000`2655d290 00000000`006bb90f sqlservr!XdesRMReadWrite::MakeActive+0x68
    00000000`2655d2c0 00000000`0153beef sqlservr!XdesRMReadWrite::GenerateLogRec+0x50b
    00000000`2655d480 00000000`00bf99f1 sqlservr!alloca_probe+0x12446f
    00000000`2655d5f0 00000000`00896f44 sqlservr!MDL::FLockObjectId+0x1c2
    00000000`2655d680 00000000`008971ed sqlservr!CMEDCatalogObject::FPersistObject+0x174
    00000000`2655d6f0 00000000`008a224d sqlservr!CMEDProxySchema::CreateObject+0xfd
    00000000`2655d770 00000000`0239f42f sqlservr!CTableCreate::LCreateImpl+0x70c
    00000000`2655dbe0 00000000`0239f9d7 sqlservr!CStmtCreateTable::XretCreateTableExecute+0x18f
    00000000`2655dd50 00000000`023c9243 sqlservr!CXStmtCreateTableDDL::XretExecute+0x47
    00000000`2655dd90 00000000`023ccf7a sqlservr!CExecStmtLoopVars::ExecuteXStmtAndSetXretReturn+0x13
    00000000`2655ddc0 00000000`017540f0 sqlservr!CMsqlExecContext::ExecuteStmts+0xbca
    00000000`2655ed70 00000000`00774629 sqlservr!alloca_probe+0x3d87fc
    00000000`2655eef0 00000000`00778d3f sqlservr!CSQLSource::Execute+0x319
    00000000`2655f020 00000000`0072fb2a sqlservr!process_request+0x371
    00000000`2655f2e0 00000000`0067cc1b sqlservr!process_commands+0x1ba
    00000000`2655f4e0 00000000`0067dffa sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`2655f600 00000000`0067cd69 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`2655f690 00000000`00b49940 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`2655f700 00000000`00b48c30 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`2655f7c0 00000000`00b47426 sqlservr!SystemThread::RunWorker+0x60
    00000000`2655f7f0 00000000`00b49c4f sqlservr!SystemThreadDispatcher::ProcessWorker+0x130
    00000000`2655f880 00000000`74ac37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f

    26 Id: 2c4.16e4 Suspend: 0 Teb: 000007ff`fff74000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`268af388 00000000`76dc2d60 ntdll!NtSignalAndWaitForSingleObject+0xa
    00000000`268af390 00000000`00674669 kernel32!SignalObjectAndWait+0x110
    00000000`268af440 00000000`007b14c2 sqlservr!SOS_Scheduler::SwitchContext+0x968
    00000000`268af700 00000000`0067cc1b sqlservr!SOS_Scheduler::Idle+0xa2
    00000000`268af730 00000000`0067dffa sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`268af850 00000000`0067cd69 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`268af8e0 00000000`00b49940 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`268af950 00000000`00b48c30 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`268afa10 00000000`00b47426 sqlservr!SystemThread::RunWorker+0x60
    00000000`268afa40 00000000`00b49c4f sqlservr!SystemThreadDispatcher::ProcessWorker+0x130
    00000000`268afad0 00000000`74ac37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`268afb60 00000000`74ac3894 msvcr80!endthreadex+0x47
    00000000`268afb90 00000000`76d6652d msvcr80!endthreadex+0x104
    00000000`268afbc0 00000000`76e9c541 kernel32!BaseThreadInitThunk+0xd
    00000000`268afbf0 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    27 Id: 2c4.68c Suspend: 0 Teb: 000007ff`fff72000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`26c2c5e8 00000000`76dc2d60 ntdll!NtSignalAndWaitForSingleObject+0xa
    00000000`26c2c5f0 00000000`00674669 kernel32!SignalObjectAndWait+0x110
    00000000`26c2c6a0 00000000`00674485 sqlservr!SOS_Scheduler::SwitchContext+0x968
    00000000`26c2c960 00000000`00673db6 sqlservr!SOS_Scheduler::SuspendNonPreemptive+0xc5
    00000000`26c2c9a0 00000000`00689902 sqlservr!EventInternal<Spinlock >::Wait+0x436
    00000000`26c2cf90 00000000`02b46488 sqlservr!BPool::LazyWriter+0x4d7
    00000000`26c2f3f0 00000000`0067cc1b sqlservr!lazywriter+0x2c8
    00000000`26c2f8e0 00000000`0067dffa sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`26c2fa00 00000000`0067cd69 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`26c2fa90 00000000`00b49940 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`26c2fb00 00000000`00b48c30 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`26c2fbc0 00000000`00b47426 sqlservr!SystemThread::RunWorker+0x60
    00000000`26c2fbf0 00000000`00b49c4f sqlservr!SystemThreadDispatcher::ProcessWorker+0x130
    00000000`26c2fc80 00000000`74ac37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`26c2fd10 00000000`74ac3894 msvcr80!endthreadex+0x47
    00000000`26c2fd40 00000000`76d6652d msvcr80!endthreadex+0x104
    00000000`26c2fd70 00000000`76e9c541 kernel32!BaseThreadInitThunk+0xd
    00000000`26c2fda0 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    28 Id: 2c4.a74 Suspend: 0 Teb: 000007ff`fff70000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`26fff228 00000000`76dc2d60 ntdll!NtSignalAndWaitForSingleObject+0xa
    00000000`26fff230 00000000`00674669 kernel32!SignalObjectAndWait+0x110
    00000000`26fff2e0 00000000`007b14c2 sqlservr!SOS_Scheduler::SwitchContext+0x968
    00000000`26fff5a0 00000000`0067cc1b sqlservr!SOS_Scheduler::Idle+0xa2
    00000000`26fff5d0 00000000`0067dffa sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`26fff6f0 00000000`0067cd69 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`26fff780 00000000`00b49940 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`26fff7f0 00000000`00b48c30 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`26fff8b0 00000000`00b47426 sqlservr!SystemThread::RunWorker+0x60
    00000000`26fff8e0 00000000`00b49c4f sqlservr!SystemThreadDispatcher::ProcessWorker+0x130
    00000000`26fff970 00000000`74ac37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`26fffa00 00000000`74ac3894 msvcr80!endthreadex+0x47
    00000000`26fffa30 00000000`76d6652d msvcr80!endthreadex+0x104
    00000000`26fffa60 00000000`76e9c541 kernel32!BaseThreadInitThunk+0xd
    00000000`26fffa90 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    29 Id: 2c4.b7c Suspend: 0 Teb: 000007ff`fff6e000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`2734f598 000007fe`fd081203 ntdll!ZwDelayExecution+0xa
    00000000`2734f5a0 00000000`006a478a KERNELBASE!SleepEx+0xab
    00000000`2734f640 00000000`02df66c9 sqlservr!SchedulerMonitor::Run+0x1a9
    00000000`2734f760 00000000`0067cc1b sqlservr!SchedulerMonitor::EntryPoint+0x9
    00000000`2734f790 00000000`0067dffa sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`2734f8b0 00000000`0067cd69 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`2734f940 00000000`00b49940 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`2734f9b0 00000000`00b48c30 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`2734fa70 00000000`00b47426 sqlservr!SystemThread::RunWorker+0x60
    00000000`2734faa0 00000000`00b49c4f sqlservr!SystemThreadDispatcher::ProcessWorker+0x130
    00000000`2734fb30 00000000`74ac37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`2734fbc0 00000000`74ac3894 msvcr80!endthreadex+0x47
    00000000`2734fbf0 00000000`76d6652d msvcr80!endthreadex+0x104
    00000000`2734fc20 00000000`76e9c541 kernel32!BaseThreadInitThunk+0xd
    00000000`2734fc50 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    30 Id: 2c4.13b0 Suspend: 0 Teb: 000007ff`fff6c000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`275ef678 00000000`76dc2d60 ntdll!NtSignalAndWaitForSingleObject+0xa
    00000000`275ef680 00000000`00674669 kernel32!SignalObjectAndWait+0x110
    00000000`275ef730 00000000`007b14c2 sqlservr!SOS_Scheduler::SwitchContext+0x968
    00000000`275ef9f0 00000000`0067cc1b sqlservr!SOS_Scheduler::Idle+0xa2
    00000000`275efa20 00000000`0067dffa sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`275efb40 00000000`0067cd69 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`275efbd0 00000000`00b49940 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`275efc40 00000000`00b48c30 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`275efd00 00000000`00b47426 sqlservr!SystemThread::RunWorker+0x60
    00000000`275efd30 00000000`00b49c4f sqlservr!SystemThreadDispatcher::ProcessWorker+0x130
    00000000`275efdc0 00000000`74ac37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`275efe50 00000000`74ac3894 msvcr80!endthreadex+0x47
    00000000`275efe80 00000000`76d6652d msvcr80!endthreadex+0x104
    00000000`275efeb0 00000000`76e9c541 kernel32!BaseThreadInitThunk+0xd
    00000000`275efee0 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    31 Id: 2c4.122c Suspend: 0 Teb: 000007ff`fff6a000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`277ee9e8 00000000`76dc2d60 ntdll!NtSignalAndWaitForSingleObject+0xa
    00000000`277ee9f0 00000000`00674669 kernel32!SignalObjectAndWait+0x110
    00000000`277eeaa0 00000000`00674485 sqlservr!SOS_Scheduler::SwitchContext+0x968
    00000000`277eed60 00000000`00673db6 sqlservr!SOS_Scheduler::SuspendNonPreemptive+0xc5
    00000000`277eeda0 00000000`0068d6bd sqlservr!EventInternal<Spinlock >::Wait+0x436
    00000000`277ef390 00000000`00c1be51 sqlservr!ResQueueBase::Dequeue+0x19d
    00000000`277ef450 00000000`02dd08a7 sqlservr!CheckpointLoop+0x1d5
    00000000`277ef670 00000000`0067cc1b sqlservr!ckptproc+0x47
    00000000`277ef6e0 00000000`0067dffa sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`277ef800 00000000`0067cd69 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`277ef890 00000000`00b49940 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`277ef900 00000000`00b48c30 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`277ef9c0 00000000`00b47426 sqlservr!SystemThread::RunWorker+0x60
    00000000`277ef9f0 00000000`00b49c4f sqlservr!SystemThreadDispatcher::ProcessWorker+0x130
    00000000`277efa80 00000000`74ac37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`277efb10 00000000`74ac3894 msvcr80!endthreadex+0x47
    00000000`277efb40 00000000`76d6652d msvcr80!endthreadex+0x104
    00000000`277efb70 00000000`76e9c541 kernel32!BaseThreadInitThunk+0xd
    00000000`277efba0 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    32 Id: 2c4.1744 Suspend: 0 Teb: 000007ff`fff68000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`27b6f218 00000000`76dc2d60 ntdll!NtSignalAndWaitForSingleObject+0xa
    00000000`27b6f220 00000000`00674669 kernel32!SignalObjectAndWait+0x110
    00000000`27b6f2d0 00000000`007b14c2 sqlservr!SOS_Scheduler::SwitchContext+0x968
    00000000`27b6f590 00000000`0067cc1b sqlservr!SOS_Scheduler::Idle+0xa2
    00000000`27b6f5c0 00000000`0067dffa sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`27b6f6e0 00000000`0067cd69 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`27b6f770 00000000`00b49940 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`27b6f7e0 00000000`00b48c30 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`27b6f8a0 00000000`00b47426 sqlservr!SystemThread::RunWorker+0x60
    00000000`27b6f8d0 00000000`00b49c4f sqlservr!SystemThreadDispatcher::ProcessWorker+0x130
    00000000`27b6f960 00000000`74ac37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`27b6f9f0 00000000`74ac3894 msvcr80!endthreadex+0x47
    00000000`27b6fa20 00000000`76d6652d msvcr80!endthreadex+0x104
    00000000`27b6fa50 00000000`76e9c541 kernel32!BaseThreadInitThunk+0xd
    00000000`27b6fa80 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    33 Id: 2c4.10a4 Suspend: 0 Teb: 000007ff`fff66000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`27ddf828 000007fe`fd0810dc ntdll!ZwWaitForSingleObject+0xa
    00000000`27ddf830 00000000`0097e222 KERNELBASE!WaitForSingleObjectEx+0x79
    00000000`27ddf8d0 00000000`02f2e42e sqlservr!FRunCM+0x32c
    00000000`27ddfa20 00000000`0067cc1b sqlservr!initCM+0x3ee
    00000000`27ddfad0 00000000`0067dffa sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`27ddfbf0 00000000`0067cd69 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`27ddfc80 00000000`00b49940 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`27ddfcf0 00000000`00b48c30 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`27ddfdb0 00000000`00b47426 sqlservr!SystemThread::RunWorker+0x60
    00000000`27ddfde0 00000000`00b49c4f sqlservr!SystemThreadDispatcher::ProcessWorker+0x130
    00000000`27ddfe70 00000000`74ac37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`27ddff00 00000000`74ac3894 msvcr80!endthreadex+0x47
    00000000`27ddff30 00000000`76d6652d msvcr80!endthreadex+0x104
    00000000`27ddff60 00000000`76e9c541 kernel32!BaseThreadInitThunk+0xd
    00000000`27ddff90 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    34 Id: 2c4.b80 Suspend: 0 Teb: 000007ff`fff64000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`280bf6d8 00000000`76dc2d60 ntdll!NtSignalAndWaitForSingleObject+0xa
    00000000`280bf6e0 00000000`00674669 kernel32!SignalObjectAndWait+0x110
    00000000`280bf790 00000000`007b14c2 sqlservr!SOS_Scheduler::SwitchContext+0x968
    00000000`280bfa50 00000000`0067cc1b sqlservr!SOS_Scheduler::Idle+0xa2
    00000000`280bfa80 00000000`0067dffa sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`280bfba0 00000000`0067cd69 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`280bfc30 00000000`00b49940 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`280bfca0 00000000`00b48c30 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`280bfd60 00000000`00b47426 sqlservr!SystemThread::RunWorker+0x60
    00000000`280bfd90 00000000`00b49c4f sqlservr!SystemThreadDispatcher::ProcessWorker+0x130
    00000000`280bfe20 00000000`74ac37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`280bfeb0 00000000`74ac3894 msvcr80!endthreadex+0x47
    00000000`280bfee0 00000000`76d6652d msvcr80!endthreadex+0x104
    00000000`280bff10 00000000`76e9c541 kernel32!BaseThreadInitThunk+0xd
    00000000`280bff40 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    35 Id: 2c4.17f0 Suspend: 0 Teb: 000007ff`fff60000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`2857f1d8 00000000`76dc2d60 ntdll!NtSignalAndWaitForSingleObject+0xa
    00000000`2857f1e0 00000000`00674669 kernel32!SignalObjectAndWait+0x110
    00000000`2857f290 00000000`007b14c2 sqlservr!SOS_Scheduler::SwitchContext+0x968
    00000000`2857f550 00000000`0067cc1b sqlservr!SOS_Scheduler::Idle+0xa2
    00000000`2857f580 00000000`0067dffa sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`2857f6a0 00000000`0067cd69 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`2857f730 00000000`00b49940 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`2857f7a0 00000000`00b48c30 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`2857f860 00000000`00b47426 sqlservr!SystemThread::RunWorker+0x60
    00000000`2857f890 00000000`00b49c4f sqlservr!SystemThreadDispatcher::ProcessWorker+0x130
    00000000`2857f920 00000000`74ac37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`2857f9b0 00000000`74ac3894 msvcr80!endthreadex+0x47
    00000000`2857f9e0 00000000`76d6652d msvcr80!endthreadex+0x104
    00000000`2857fa10 00000000`76e9c541 kernel32!BaseThreadInitThunk+0xd
    00000000`2857fa40 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    36 Id: 2c4.1ac Suspend: 0 Teb: 000007ff`fff5e000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`2882c588 00000000`76dc2d60 ntdll!NtSignalAndWaitForSingleObject+0xa
    00000000`2882c590 00000000`00674669 kernel32!SignalObjectAndWait+0x110
    00000000`2882c640 00000000`00674485 sqlservr!SOS_Scheduler::SwitchContext+0x968
    00000000`2882c900 00000000`00673db6 sqlservr!SOS_Scheduler::SuspendNonPreemptive+0xc5
    00000000`2882c940 00000000`00f01747 sqlservr!EventInternal<Spinlock >::Wait+0x436
    00000000`2882cf30 00000000`0083431a sqlservr!LC::WaitForMemBlk+0x87
    00000000`2882cfb0 00000000`006baa61 sqlservr!SQLServerLogMgr::AppendLogRequest+0x31f
    00000000`2882d090 00000000`006bb154 sqlservr!SQLServerLogMgr::ReserveAndAppend+0x5d
    00000000`2882d1c0 00000000`006bbbcd sqlservr!XdesRMReadWrite::GenerateLogRec+0x2e4
    00000000`2882d380 00000000`006bb9c4 sqlservr!XdesRMReadWrite::LogBeginXact+0x1fd
    00000000`2882d4e0 00000000`006bb90f sqlservr!XdesRMReadWrite::MakeActive+0x68
    00000000`2882d510 00000000`0153beef sqlservr!XdesRMReadWrite::GenerateLogRec+0x50b
    00000000`2882d6d0 00000000`00bf99f1 sqlservr!alloca_probe+0x12446f
    00000000`2882d840 00000000`00896f44 sqlservr!MDL::FLockObjectId+0x1c2
    00000000`2882d8d0 00000000`008971ed sqlservr!CMEDCatalogObject::FPersistObject+0x174
    00000000`2882d940 00000000`008a224d sqlservr!CMEDProxySchema::CreateObject+0xfd
    00000000`2882d9c0 00000000`0239f42f sqlservr!CTableCreate::LCreateImpl+0x70c
    00000000`2882de30 00000000`0239f9d7 sqlservr!CStmtCreateTable::XretCreateTableExecute+0x18f
    00000000`2882dfa0 00000000`023c9243 sqlservr!CXStmtCreateTableDDL::XretExecute+0x47
    00000000`2882dfe0 00000000`023ccf7a sqlservr!CExecStmtLoopVars::ExecuteXStmtAndSetXretReturn+0x13
    00000000`2882e010 00000000`017540f0 sqlservr!CMsqlExecContext::ExecuteStmts+0xbca
    00000000`2882efc0 00000000`00774629 sqlservr!alloca_probe+0x3d87fc
    00000000`2882f140 00000000`00778d3f sqlservr!CSQLSource::Execute+0x319
    00000000`2882f270 00000000`0072fb2a sqlservr!process_request+0x371
    00000000`2882f530 00000000`0067cc1b sqlservr!process_commands+0x1ba
    00000000`2882f730 00000000`0067dffa sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`2882f850 00000000`0067cd69 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`2882f8e0 00000000`00b49940 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`2882f950 00000000`00b48c30 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`2882fa10 00000000`00b47426 sqlservr!SystemThread::RunWorker+0x60
    00000000`2882fa40 00000000`00b49c4f sqlservr!SystemThreadDispatcher::ProcessWorker+0x130
    00000000`2882fad0 00000000`74ac37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f

    37 Id: 2c4.168c Suspend: 0 Teb: 000007ff`fff5c000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`28acf6f8 00000000`76dc2d60 ntdll!NtSignalAndWaitForSingleObject+0xa
    00000000`28acf700 00000000`00674669 kernel32!SignalObjectAndWait+0x110
    00000000`28acf7b0 00000000`007b14c2 sqlservr!SOS_Scheduler::SwitchContext+0x968
    00000000`28acfa70 00000000`0067cc1b sqlservr!SOS_Scheduler::Idle+0xa2
    00000000`28acfaa0 00000000`0067dffa sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`28acfbc0 00000000`0067cd69 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`28acfc50 00000000`00b49940 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`28acfcc0 00000000`00b48c30 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`28acfd80 00000000`00b47426 sqlservr!SystemThread::RunWorker+0x60
    00000000`28acfdb0 00000000`00b49c4f sqlservr!SystemThreadDispatcher::ProcessWorker+0x130
    00000000`28acfe40 00000000`74ac37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`28acfed0 00000000`74ac3894 msvcr80!endthreadex+0x47
    00000000`28acff00 00000000`76d6652d msvcr80!endthreadex+0x104
    00000000`28acff30 00000000`76e9c541 kernel32!BaseThreadInitThunk+0xd
    00000000`28acff60 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    38 Id: 2c4.fb0 Suspend: 0 Teb: 000007ff`fff5a000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`28cde678 00000000`76dc2d60 ntdll!NtSignalAndWaitForSingleObject+0xa
    00000000`28cde680 00000000`00674669 kernel32!SignalObjectAndWait+0x110
    00000000`28cde730 00000000`00674485 sqlservr!SOS_Scheduler::SwitchContext+0x968
    00000000`28cde9f0 00000000`00673db6 sqlservr!SOS_Scheduler::SuspendNonPreemptive+0xc5
    00000000`28cdea30 00000000`028ecf22 sqlservr!EventInternal<Spinlock >::Wait+0x436
    00000000`28cdf020 00000000`028ed1cd sqlservr!HostWait<EventAutoInternal<Spinlock > >+0x72
    00000000`28cdf080 00000000`028ed429 sqlservr!CHostEvent<IHostAutoEvent,EventAutoInternal<Spinlock >,4194522,DD_NullHelper>::Wait+0x4d
    00000000`28cdf0e0 000007fe`f96c055e sqlservr!CHostEventWrapper<IHostAutoEvent,EventAutoInternal<Spinlock >,4194522,DD_NullHelper>::Wait+0x39
    00000000`28cdf120 000007fe`f94d15ec mscorwks!RaiseDeadLockException+0x33e
    00000000`28cdf1a0 000007fe`f91ae0bb mscorwks! ?? ::FNODOBFM::`string’+0x7ea1c
    00000000`28cdf250 000007fe`f9728147 mscorwks!ThreadpoolMgr::SafeWait+0x7b
    00000000`28cdf310 000007fe`f94f75aa mscorwks!ThreadpoolMgr::EnterRetirement+0x97
    00000000`28cdf360 00000000`01a6792b mscorwks! ?? ::FNODOBFM::`string’+0xa49da
    00000000`28cdf400 00000000`028f2c90 sqlservr!CallProtectorImpl::CallExternalTrustedFull<ClrEntryPointCallTraits,unsigned long,FunctionCallBinder_1 >+0x8b
    00000000`28cdf480 00000000`028f2cf9 sqlservr!CHostTask::TaskExecute+0x70
    00000000`28cdf500 00000000`0067cc1b sqlservr!CHostTask::TaskProcWrapper+0x9
    00000000`28cdf530 00000000`0067dffa sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`28cdf650 00000000`0067cd69 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`28cdf6e0 00000000`00b49940 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`28cdf750 00000000`00b48c30 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`28cdf810 00000000`00b47426 sqlservr!SystemThread::RunWorker+0x60
    00000000`28cdf840 00000000`00b49c4f sqlservr!SystemThreadDispatcher::ProcessWorker+0x130
    00000000`28cdf8d0 00000000`74ac37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`28cdf960 00000000`74ac3894 msvcr80!endthreadex+0x47
    00000000`28cdf990 00000000`76d6652d msvcr80!endthreadex+0x104
    00000000`28cdf9c0 00000000`76e9c541 kernel32!BaseThreadInitThunk+0xd
    00000000`28cdf9f0 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    39 Id: 2c4.b54 Suspend: 0 Teb: 000007ff`fff58000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`2908f4a8 00000000`76dc2d60 ntdll!NtSignalAndWaitForSingleObject+0xa
    00000000`2908f4b0 00000000`00674669 kernel32!SignalObjectAndWait+0x110
    00000000`2908f560 00000000`007b14c2 sqlservr!SOS_Scheduler::SwitchContext+0x968
    00000000`2908f820 00000000`0067cc1b sqlservr!SOS_Scheduler::Idle+0xa2
    00000000`2908f850 00000000`0067dffa sqlservr!SOS_Task::Param::Execute+0x11b
    00000000`2908f970 00000000`0067cd69 sqlservr!SOS_Scheduler::RunTask+0xca
    00000000`2908fa00 00000000`00b49940 sqlservr!SOS_Scheduler::ProcessTasks+0x99
    00000000`2908fa70 00000000`00b48c30 sqlservr!SchedulerManager::WorkerEntryPoint+0x110
    00000000`2908fb30 00000000`00b47426 sqlservr!SystemThread::RunWorker+0x60
    00000000`2908fb60 00000000`00b49c4f sqlservr!SystemThreadDispatcher::ProcessWorker+0x130
    00000000`2908fbf0 00000000`74ac37d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x12f
    00000000`2908fc80 00000000`74ac3894 msvcr80!endthreadex

  51. tumblr.com said

    tumblr.com

    How to Analyze Deadlocked Schedulers Dumps? « MSSQLWIKI

  52. Heya i’m for the primary time here. I came across this board
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  53. Sunil said

    Hi Karthick,

    Here is the output of the windbg tool based on the steps you suggested
    these errors cause the server to freeze, please let me know if you have any suggestions to understand the root cause of the issue
    This is a SQL Server 2008 R2 + SP2 Enterprise Edition server

    0:087> kL100
    Child-SP RetAddr Call Site
    00000000`1ee1f018 00000000`76f62d50 ntdll!ZwSignalAndWaitForSingleObject+0xa
    00000000`1ee1f020 00000000`0089526b kernel32!SignalObjectAndWait+0x110
    00000000`1ee1f0d0 00000000`0089317a sqlservr!SOS_Scheduler::Switch+0x181
    00000000`1ee1f820 00000000`008928a0 sqlservr!SOS_Scheduler::SuspendNonPreemptive+0xca
    00000000`1ee1f860 00000000`0089ed59 sqlservr!SOS_Scheduler::Suspend+0x2d
    00000000`1ee1f890 00000000`0089ede2 sqlservr!WorkDispatcher::DequeueTask+0x472
    00000000`1ee1f920 00000000`00df307e sqlservr!SOS_Scheduler::ProcessTasks+0x76
    00000000`1ee1f990 00000000`00df3235 sqlservr!SchedulerManager::WorkerEntryPoint+0x2d2
    00000000`1ee1fa70 00000000`00df2ab9 sqlservr!SystemThread::RunWorker+0xcc
    00000000`1ee1fab0 00000000`00df38ca sqlservr!SystemThreadDispatcher::ProcessWorker+0x2db
    00000000`1ee1fb60 00000000`74c637d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x173
    00000000`1ee1fc00 00000000`74c63894 msvcr80!_callthreadstartex+0x17
    00000000`1ee1fc30 00000000`76f059ed msvcr80!_threadstartex+0x84
    00000000`1ee1fc60 00000000`7703c541 kernel32!BaseThreadInitThunk+0xd
    00000000`1ee1fc90 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    Sunil

  54. Sunil said

    Hi Karthik,

    We have a Non Yielding Scheduler errors very frequently resulting in the server turning unresponsive

    Here is the output as per your request

    0:087> ~* kpn 100

    0 Id: 468.46c Suspend: 0 Teb: 000007ff`fffde000 Unfrozen
    # Child-SP RetAddr Call Site
    00 00000000`0029ef18 000007fe`fd2810dc ntdll!NtWaitForSingleObject+0xa
    *** ERROR: Symbol file could not be found. Defaulted to export symbols for sechost.dll –
    01 00000000`0029ef20 000007fe`fe39affb KERNELBASE!WaitForSingleObjectEx+0x9c
    02 00000000`0029efc0 000007fe`fe399d61 sechost!RegisterServiceCtrlHandlerExA+0xa37
    03 00000000`0029f0b0 000007fe`fe399c16 sechost!StartServiceCtrlDispatcherW+0x299
    04 00000000`0029f1c0 00000000`02951960 sechost!StartServiceCtrlDispatcherW+0x14e
    05 00000000`0029f210 00000000`02f0eb30 sqlservr!wmain+0x470
    06 00000000`0029f9b0 00000000`76f059ed sqlservr!NtCurrentTeb+0x1a0
    07 00000000`0029f9e0 00000000`7703c541 kernel32!BaseThreadInitThunk+0xd
    08 00000000`0029fa10 00000000`00000000 ntdll!RtlUserThreadStart+0x21

    1 Id: 468.500 Suspend: 0 Teb: 000007ff`fffd5000 Unfrozen
    # Child-SP RetAddr Call Site
    00 00000000`05affb58 00000000`7702b037 ntdll!NtWaitForMultipleObjects+0xa
    01 00000000`05affb60 00000000`76f059ed ntdll!TpIsTimerSet+0x907
    02 00000000`05affe00 00000000`7703c541 kernel32!BaseThreadInitThunk+0xd
    03 00000000`05affe30 00000000`00000000 ntdll!RtlUserThreadStart+0x21

    2 Id: 468.5b4 Suspend: 0 Teb: 000007ff`fffae000 Unfrozen
    # Child-SP RetAddr Call Site
    00 00000000`06beef18 00000000`76f62d50 ntdll!ZwSignalAndWaitForSingleObject+0xa
    01 00000000`06beef20 00000000`0089526b kernel32!SignalObjectAndWait+0x110
    02 00000000`06beefd0 00000000`00dea167 sqlservr!SOS_Scheduler::Switch+0x181
    03 00000000`06bef720 00000000`0089eba0 sqlservr!SOS_Scheduler::Idle+0xb6
    04 00000000`06bef750 00000000`0089efe2 sqlservr!SOS_Task::Param::Execute+0x12a
    05 00000000`06bef860 00000000`0089ee27 sqlservr!SOS_Scheduler::RunTask+0x96
    06 00000000`06bef8c0 00000000`00df307e sqlservr!SOS_Scheduler::ProcessTasks+0x128
    07 00000000`06bef930 00000000`00df3235 sqlservr!SchedulerManager::WorkerEntryPoint+0x2d2
    08 00000000`06befa10 00000000`00df2ab9 sqlservr!SystemThread::RunWorker+0xcc
    09 00000000`06befa50 00000000`00df38ca sqlservr!SystemThreadDispatcher::ProcessWorker+0x2db
    0a 00000000`06befb00 00000000`74c637d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x173
    0b 00000000`06befba0 00000000`74c63894 msvcr80!_callthreadstartex(void)+0x17 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 348]
    0c 00000000`06befbd0 00000000`76f059ed msvcr80!_threadstartex(void * ptd = 0x00000000`00000000)+0x84 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 326]
    0d 00000000`06befc00 00000000`7703c541 kernel32!BaseThreadInitThunk+0xd
    0e 00000000`06befc30 00000000`00000000 ntdll!RtlUserThreadStart+0x21

    3 Id: 468.5dc Suspend: 0 Teb: 000007ff`fffac000 Unfrozen
    # Child-SP RetAddr Call Site
    00 00000000`06eec818 00000000`76f62d50 ntdll!ZwSignalAndWaitForSingleObject+0xa
    01 00000000`06eec820 00000000`0089526b kernel32!SignalObjectAndWait+0x110
    02 00000000`06eec8d0 00000000`0089317a sqlservr!SOS_Scheduler::Switch+0x181
    03 00000000`06eed020 00000000`008928a0 sqlservr!SOS_Scheduler::SuspendNonPreemptive+0xca
    04 00000000`06eed060 00000000`008929cc sqlservr!SOS_Scheduler::Suspend+0x2d
    05 00000000`06eed090 00000000`008aa101 sqlservr!EventInternal<Spinlock >::Wait+0x1a8
    06 00000000`06eed0e0 00000000`027a88cb sqlservr!BPool::LazyWriter+0x61d
    07 00000000`06eef590 00000000`0089eba0 sqlservr!lazywriter+0x2c7
    08 00000000`06eefa90 00000000`0089efe2 sqlservr!SOS_Task::Param::Execute+0x12a
    09 00000000`06eefba0 00000000`0089ee27 sqlservr!SOS_Scheduler::RunTask+0x96
    0a 00000000`06eefc00 00000000`00df307e sqlservr!SOS_Scheduler::ProcessTasks+0x128
    0b 00000000`06eefc70 00000000`00df3235 sqlservr!SchedulerManager::WorkerEntryPoint+0x2d2
    0c 00000000`06eefd50 00000000`00df2ab9 sqlservr!SystemThread::RunWorker+0xcc
    0d 00000000`06eefd90 00000000`00df38ca sqlservr!SystemThreadDispatcher::ProcessWorker+0x2db
    0e 00000000`06eefe40 00000000`74c637d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x173
    0f 00000000`06eefee0 00000000`74c63894 msvcr80!_callthreadstartex(void)+0x17 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 348]
    10 00000000`06eeff10 00000000`76f059ed msvcr80!_threadstartex(void * ptd = 0x00000000`00000000)+0x84 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 326]
    11 00000000`06eeff40 00000000`7703c541 kernel32!BaseThreadInitThunk+0xd
    12 00000000`06eeff70 00000000`00000000 ntdll!RtlUserThreadStart+0x21

    4 Id: 468.724 Suspend: 0 Teb: 000007ff`fffaa000 Unfrozen
    # Child-SP RetAddr Call Site
    00 00000000`071fef58 00000000`76f62d50 ntdll!ZwSignalAndWaitForSingleObject+0xa
    01 00000000`071fef60 00000000`0089526b kernel32!SignalObjectAndWait+0x110
    02 00000000`071ff010 00000000`00dea167 sqlservr!SOS_Scheduler::Switch+0x181
    03 00000000`071ff760 00000000`0089eba0 sqlservr!SOS_Scheduler::Idle+0xb6
    04 00000000`071ff790 00000000`0089efe2 sqlservr!SOS_Task::Param::Execute+0x12a
    05 00000000`071ff8a0 00000000`0089ee27 sqlservr!SOS_Scheduler::RunTask+0x96
    06 00000000`071ff900 00000000`00df307e sqlservr!SOS_Scheduler::ProcessTasks+0x128
    07 00000000`071ff970 00000000`00df3235 sqlservr!SchedulerManager::WorkerEntryPoint+0x2d2
    08 00000000`071ffa50 00000000`00df2ab9 sqlservr!SystemThread::RunWorker+0xcc
    09 00000000`071ffa90 00000000`00df38ca sqlservr!SystemThreadDispatcher::ProcessWorker+0x2db
    0a 00000000`071ffb40 00000000`74c637d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x173
    0b 00000000`071ffbe0 00000000`74c63894 msvcr80!_callthreadstartex(void)+0x17 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 348]
    0c 00000000`071ffc10 00000000`76f059ed msvcr80!_threadstartex(void * ptd = 0x00000000`00000000)+0x84 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 326]
    0d 00000000`071ffc40 00000000`7703c541 kernel32!BaseThreadInitThunk+0xd
    0e 00000000`071ffc70 00000000`00000000 ntdll!RtlUserThreadStart+0x21

    5 Id: 468.588 Suspend: 0 Teb: 000007ff`fffa8000 Unfrozen
    # Child-SP RetAddr Call Site
    00 00000000`074ff308 000007fe`fd281203 ntdll!NtDelayExecution+0xa
    01 00000000`074ff310 00000000`008c2b49 KERNELBASE!SleepEx+0xb3
    02 00000000`074ff3b0 00000000`02ded851 sqlservr!SchedulerMonitor::Run+0x1f3
    03 00000000`074ff4d0 00000000`0089eba0 sqlservr!SchedulerMonitor::EntryPoint+0x9
    04 00000000`074ff500 00000000`0089efe2 sqlservr!SOS_Task::Param::Execute+0x12a
    05 00000000`074ff610 00000000`0089ee27 sqlservr!SOS_Scheduler::RunTask+0x96
    06 00000000`074ff670 00000000`00df307e sqlservr!SOS_Scheduler::ProcessTasks+0x128
    07 00000000`074ff6e0 00000000`00df3235 sqlservr!SchedulerManager::WorkerEntryPoint+0x2d2
    08 00000000`074ff7c0 00000000`00df2ab9 sqlservr!SystemThread::RunWorker+0xcc
    09 00000000`074ff800 00000000`00df38ca sqlservr!SystemThreadDispatcher::ProcessWorker+0x2db
    0a 00000000`074ff8b0 00000000`74c637d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x173
    0b 00000000`074ff950 00000000`74c63894 msvcr80!_callthreadstartex(void)+0x17 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 348]
    0c 00000000`074ff980 00000000`76f059ed msvcr80!_threadstartex(void * ptd = 0x00000000`00000000)+0x84 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 326]
    0d 00000000`074ff9b0 00000000`7703c541 kernel32!BaseThreadInitThunk+0xd
    0e 00000000`074ff9e0 00000000`00000000 ntdll!RtlUserThreadStart+0x21

    6 Id: 468.804 Suspend: 0 Teb: 000007ff`fffa6000 Unfrozen
    # Child-SP RetAddr Call Site
    00 00000000`077eed18 00000000`76f62d50 ntdll!ZwSignalAndWaitForSingleObject+0xa
    01 00000000`077eed20 00000000`0089526b kernel32!SignalObjectAndWait+0x110
    02 00000000`077eedd0 00000000`00dea167 sqlservr!SOS_Scheduler::Switch+0x181
    03 00000000`077ef520 00000000`0089eba0 sqlservr!SOS_Scheduler::Idle+0xb6
    04 00000000`077ef550 00000000`0089efe2 sqlservr!SOS_Task::Param::Execute+0x12a
    05 00000000`077ef660 00000000`0089ee27 sqlservr!SOS_Scheduler::RunTask+0x96
    06 00000000`077ef6c0 00000000`00df307e sqlservr!SOS_Scheduler::ProcessTasks+0x128
    07 00000000`077ef730 00000000`00df3235 sqlservr!SchedulerManager::WorkerEntryPoint+0x2d2
    08 00000000`077ef810 00000000`00df2ab9 sqlservr!SystemThread::RunWorker+0xcc
    09 00000000`077ef850 00000000`00df38ca sqlservr!SystemThreadDispatcher::ProcessWorker+0x2db
    0a 00000000`077ef900 00000000`74c637d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x173
    0b 00000000`077ef9a0 00000000`74c63894 msvcr80!_callthreadstartex(void)+0x17 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 348]
    0c 00000000`077ef9d0 00000000`76f059ed msvcr80!_threadstartex(void * ptd = 0x00000000`00000000)+0x84 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 326]
    0d 00000000`077efa00 00000000`7703c541 kernel32!BaseThreadInitThunk+0xd
    0e 00000000`077efa30 00000000`00000000 ntdll!RtlUserThreadStart+0x21

    7 Id: 468.818 Suspend: 0 Teb: 000007ff`fffa4000 Unfrozen
    # Child-SP RetAddr Call Site
    00 00000000`07aaead8 00000000`76f62d50 ntdll!ZwSignalAndWaitForSingleObject+0xa
    01 00000000`07aaeae0 00000000`0089526b kernel32!SignalObjectAndWait+0x110
    02 00000000`07aaeb90 00000000`0089317a sqlservr!SOS_Scheduler::Switch+0x181
    03 00000000`07aaf2e0 00000000`008928a0 sqlservr!SOS_Scheduler::SuspendNonPreemptive+0xca
    04 00000000`07aaf320 00000000`008929cc sqlservr!SOS_Scheduler::Suspend+0x2d
    05 00000000`07aaf350 00000000`0160ce75 sqlservr!EventInternal<Spinlock >::Wait+0x1a8
    06 00000000`07aaf3a0 00000000`0297c542 sqlservr!SignalProc+0x1bd
    07 00000000`07aaf610 00000000`0089eba0 sqlservr!StartUp::InitDBMS+0x1b2
    08 00000000`07aaf760 00000000`0089efe2 sqlservr!SOS_Task::Param::Execute+0x12a
    09 00000000`07aaf870 00000000`0089ee27 sqlservr!SOS_Scheduler::RunTask+0x96
    0a 00000000`07aaf8d0 00000000`00df307e sqlservr!SOS_Scheduler::ProcessTasks+0x128
    0b 00000000`07aaf940 00000000`00df3235 sqlservr!SchedulerManager::WorkerEntryPoint+0x2d2
    0c 00000000`07aafa20 00000000`00df2ab9 sqlservr!SystemThread::RunWorker+0xcc
    0d 00000000`07aafa60 00000000`00df38ca sqlservr!SystemThreadDispatcher::ProcessWorker+0x2db
    0e 00000000`07aafb10 00000000`74c637d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x173
    0f 00000000`07aafbb0 00000000`74c63894 msvcr80!_callthreadstartex(void)+0x17 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 348]
    10 00000000`07aafbe0 00000000`76f059ed msvcr80!_threadstartex(void * ptd = 0x00000000`00000000)+0x84 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 326]
    11 00000000`07aafc10 00000000`7703c541 kernel32!BaseThreadInitThunk+0xd
    12 00000000`07aafc40 00000000`00000000 ntdll!RtlUserThreadStart+0x21

    8 Id: 468.81c Suspend: 0 Teb: 000007ff`fffa2000 Unfrozen
    # Child-SP RetAddr Call Site
    00 00000000`07d6eca8 00000000`76f62d50 ntdll!ZwSignalAndWaitForSingleObject+0xa
    01 00000000`07d6ecb0 00000000`0089526b kernel32!SignalObjectAndWait+0x110
    02 00000000`07d6ed60 00000000`00dea167 sqlservr!SOS_Scheduler::Switch+0x181
    03 00000000`07d6f4b0 00000000`0089eba0 sqlservr!SOS_Scheduler::Idle+0xb6
    04 00000000`07d6f4e0 00000000`0089efe2 sqlservr!SOS_Task::Param::Execute+0x12a
    05 00000000`07d6f5f0 00000000`0089ee27 sqlservr!SOS_Scheduler::RunTask+0x96
    06 00000000`07d6f650 00000000`00df307e sqlservr!SOS_Scheduler::ProcessTasks+0x128
    07 00000000`07d6f6c0 00000000`00df3235 sqlservr!SchedulerManager::WorkerEntryPoint+0x2d2
    08 00000000`07d6f7a0 00000000`00df2ab9 sqlservr!SystemThread::RunWorker+0xcc
    09 00000000`07d6f7e0 00000000`00df38ca sqlservr!SystemThreadDispatcher::ProcessWorker+0x2db
    0a 00000000`07d6f890 00000000`74c637d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x173
    0b 00000000`07d6f930 00000000`74c63894 msvcr80!_callthreadstartex(void)+0x17 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 348]
    0c 00000000`07d6f960 00000000`76f059ed msvcr80!_threadstartex(void * ptd = 0x00000000`00000000)+0x84 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 326]
    0d 00000000`07d6f990 00000000`7703c541 kernel32!BaseThreadInitThunk+0xd
    0e 00000000`07d6f9c0 00000000`00000000 ntdll!RtlUserThreadStart+0x21

    9 Id: 468.828 Suspend: 0 Teb: 000007ff`fffa0000 Unfrozen
    # Child-SP RetAddr Call Site
    00 00000000`0808e6e8 00000000`76f62d50 ntdll!ZwSignalAndWaitForSingleObject+0xa
    01 00000000`0808e6f0 00000000`0089526b kernel32!SignalObjectAndWait+0x110
    02 00000000`0808e7a0 00000000`0089317a sqlservr!SOS_Scheduler::Switch+0x181
    03 00000000`0808eef0 00000000`008928a0 sqlservr!SOS_Scheduler::SuspendNonPreemptive+0xca
    04 00000000`0808ef30 00000000`008929cc sqlservr!SOS_Scheduler::Suspend+0x2d
    05 00000000`0808ef60 00000000`008ac8c3 sqlservr!EventInternal<Spinlock >::Wait+0x1a8
    06 00000000`0808efb0 00000000`025d6aec sqlservr!ResQueueBase::Dequeue+0x142
    07 00000000`0808f070 00000000`0089eba0 sqlservr!systemTaskThread+0x30c
    08 00000000`0808f5d0 00000000`0089efe2 sqlservr!SOS_Task::Param::Execute+0x12a
    09 00000000`0808f6e0 00000000`0089ee27 sqlservr!SOS_Scheduler::RunTask+0x96
    0a 00000000`0808f740 00000000`00df307e sqlservr!SOS_Scheduler::ProcessTasks+0x128
    0b 00000000`0808f7b0 00000000`00df3235 sqlservr!SchedulerManager::WorkerEntryPoint+0x2d2
    0c 00000000`0808f890 00000000`00df2ab9 sqlservr!SystemThread::RunWorker+0xcc
    0d 00000000`0808f8d0 00000000`00df38ca sqlservr!SystemThreadDispatcher::ProcessWorker+0x2db
    0e 00000000`0808f980 00000000`74c637d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x173
    0f 00000000`0808fa20 00000000`74c63894 msvcr80!_callthreadstartex(void)+0x17 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 348]
    10 00000000`0808fa50 00000000`76f059ed msvcr80!_threadstartex(void * ptd = 0x00000000`00000000)+0x84 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 326]
    11 00000000`0808fa80 00000000`7703c541 kernel32!BaseThreadInitThunk+0xd
    12 00000000`0808fab0 00000000`00000000 ntdll!RtlUserThreadStart+0x21

    10 Id: 468.82c Suspend: 0 Teb: 000007ff`fff9e000 Unfrozen
    # Child-SP RetAddr Call Site
    00 00000000`0845eca8 00000000`76f62d50 ntdll!ZwSignalAndWaitForSingleObject+0xa
    01 00000000`0845ecb0 00000000`0089526b kernel32!SignalObjectAndWait+0x110
    02 00000000`0845ed60 00000000`00dea167 sqlservr!SOS_Scheduler::Switch+0x181
    03 00000000`0845f4b0 00000000`0089eba0 sqlservr!SOS_Scheduler::Idle+0xb6
    04 00000000`0845f4e0 00000000`0089efe2 sqlservr!SOS_Task::Param::Execute+0x12a
    05 00000000`0845f5f0 00000000`0089ee27 sqlservr!SOS_Scheduler::RunTask+0x96
    06 00000000`0845f650 00000000`00df307e sqlservr!SOS_Scheduler::ProcessTasks+0x128
    07 00000000`0845f6c0 00000000`00df3235 sqlservr!SchedulerManager::WorkerEntryPoint+0x2d2
    08 00000000`0845f7a0 00000000`00df2ab9 sqlservr!SystemThread::RunWorker+0xcc
    09 00000000`0845f7e0 00000000`00df38ca sqlservr!SystemThreadDispatcher::ProcessWorker+0x2db
    0a 00000000`0845f890 00000000`74c637d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x173
    0b 00000000`0845f930 00000000`74c63894 msvcr80!_callthreadstartex(void)+0x17 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 348]
    0c 00000000`0845f960 00000000`76f059ed msvcr80!_threadstartex(void * ptd = 0x00000000`00000000)+0x84 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 326]
    0d 00000000`0845f990 00000000`7703c541 kernel32!BaseThreadInitThunk+0xd
    0e 00000000`0845f9c0 00000000`00000000 ntdll!RtlUserThreadStart+0x21

    11 Id: 468.840 Suspend: 0 Teb: 000007ff`fff9a000 Unfrozen
    # Child-SP RetAddr Call Site
    00 00000000`08a7f228 00000000`76f62d50 ntdll!ZwSignalAndWaitForSingleObject+0xa
    01 00000000`08a7f230 00000000`0089526b kernel32!SignalObjectAndWait+0x110
    02 00000000`08a7f2e0 00000000`00dea167 sqlservr!SOS_Scheduler::Switch+0x181
    03 00000000`08a7fa30 00000000`0089eba0 sqlservr!SOS_Scheduler::Idle+0xb6
    04 00000000`08a7fa60 00000000`0089efe2 sqlservr!SOS_Task::Param::Execute+0x12a
    05 00000000`08a7fb70 00000000`0089ee27 sqlservr!SOS_Scheduler::RunTask+0x96
    06 00000000`08a7fbd0 00000000`00df307e sqlservr!SOS_Scheduler::ProcessTasks+0x128
    07 00000000`08a7fc40 00000000`00df3235 sqlservr!SchedulerManager::WorkerEntryPoint+0x2d2
    08 00000000`08a7fd20 00000000`00df2ab9 sqlservr!SystemThread::RunWorker+0xcc
    09 00000000`08a7fd60 00000000`00df38ca sqlservr!SystemThreadDispatcher::ProcessWorker+0x2db
    0a 00000000`08a7fe10 00000000`74c637d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x173
    0b 00000000`08a7feb0 00000000`74c63894 msvcr80!_callthreadstartex(void)+0x17 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 348]
    0c 00000000`08a7fee0 00000000`76f059ed msvcr80!_threadstartex(void * ptd = 0x00000000`00000000)+0x84 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 326]
    0d 00000000`08a7ff10 00000000`7703c541 kernel32!BaseThreadInitThunk+0xd
    0e 00000000`08a7ff40 00000000`00000000 ntdll!RtlUserThreadStart+0x21

    12 Id: 468.848 Suspend: 0 Teb: 000007ff`fff98000 Unfrozen
    # Child-SP RetAddr Call Site
    00 00000000`08d1f178 00000000`76f62d50 ntdll!ZwSignalAndWaitForSingleObject+0xa
    01 00000000`08d1f180 00000000`0089526b kernel32!SignalObjectAndWait+0x110
    02 00000000`08d1f230 00000000`0089317a sqlservr!SOS_Scheduler::Switch+0x181
    03 00000000`08d1f980 00000000`008928a0 sqlservr!SOS_Scheduler::SuspendNonPreemptive+0xca
    04 00000000`08d1f9c0 00000000`0089ed59 sqlservr!SOS_Scheduler::Suspend+0x2d
    05 00000000`08d1f9f0 00000000`0089ede2 sqlservr!WorkDispatcher::DequeueTask+0x472
    06 00000000`08d1fa80 00000000`00df307e sqlservr!SOS_Scheduler::ProcessTasks+0x76
    07 00000000`08d1faf0 00000000`00df3235 sqlservr!SchedulerManager::WorkerEntryPoint+0x2d2
    08 00000000`08d1fbd0 00000000`00df2ab9 sqlservr!SystemThread::RunWorker+0xcc
    09 00000000`08d1fc10 00000000`00df38ca sqlservr!SystemThreadDispatcher::ProcessWorker+0x2db
    0a 00000000`08d1fcc0 00000000`74c637d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x173
    0b 00000000`08d1fd60 00000000`74c63894 msvcr80!_callthreadstartex(void)+0x17 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 348]
    0c 00000000`08d1fd90 00000000`76f059ed msvcr80!_threadstartex(void * ptd = 0x00000000`00000000)+0x84 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 326]
    0d 00000000`08d1fdc0 00000000`7703c541 kernel32!BaseThreadInitThunk+0xd
    0e 00000000`08d1fdf0 00000000`00000000 ntdll!RtlUserThreadStart+0x21

    13 Id: 468.84c Suspend: 0 Teb: 000007ff`fff96000 Unfrozen
    # Child-SP RetAddr Call Site
    00 00000000`08f7ef58 00000000`76f62d50 ntdll!ZwSignalAndWaitForSingleObject+0xa
    01 00000000`08f7ef60 00000000`0089526b kernel32!SignalObjectAndWait+0x110
    02 00000000`08f7f010 00000000`00dea167 sqlservr!SOS_Scheduler::Switch+0x181
    03 00000000`08f7f760 00000000`0089eba0 sqlservr!SOS_Scheduler::Idle+0xb6
    04 00000000`08f7f790 00000000`0089efe2 sqlservr!SOS_Task::Param::Execute+0x12a
    05 00000000`08f7f8a0 00000000`0089ee27 sqlservr!SOS_Scheduler::RunTask+0x96
    06 00000000`08f7f900 00000000`00df307e sqlservr!SOS_Scheduler::ProcessTasks+0x128
    07 00000000`08f7f970 00000000`00df3235 sqlservr!SchedulerManager::WorkerEntryPoint+0x2d2
    08 00000000`08f7fa50 00000000`00df2ab9 sqlservr!SystemThread::RunWorker+0xcc
    09 00000000`08f7fa90 00000000`00df38ca sqlservr!SystemThreadDispatcher::ProcessWorker+0x2db
    0a 00000000`08f7fb40 00000000`74c637d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x173
    0b 00000000`08f7fbe0 00000000`74c63894 msvcr80!_callthreadstartex(void)+0x17 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 348]
    0c 00000000`08f7fc10 00000000`76f059ed msvcr80!_threadstartex(void * ptd = 0x00000000`00000000)+0x84 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 326]
    0d 00000000`08f7fc40 00000000`7703c541 kernel32!BaseThreadInitThunk+0xd
    0e 00000000`08f7fc70 00000000`00000000 ntdll!RtlUserThreadStart+0x21

    14 Id: 468.860 Suspend: 0 Teb: 000007ff`fff94000 Unfrozen
    # Child-SP RetAddr Call Site
    00 00000000`0930f358 000007fe`fd2810dc ntdll!NtWaitForSingleObject+0xa
    01 00000000`0930f360 00000000`00893d3f KERNELBASE!WaitForSingleObjectEx+0x9c
    02 00000000`0930f400 00000000`0089317a sqlservr!SOS_Scheduler::SwitchContext+0x26d
    03 00000000`0930f890 00000000`008928a0 sqlservr!SOS_Scheduler::SuspendNonPreemptive+0xca
    04 00000000`0930f8d0 00000000`0089ed59 sqlservr!SOS_Scheduler::Suspend+0x2d
    05 00000000`0930f900 00000000`0089ede2 sqlservr!WorkDispatcher::DequeueTask+0x472
    06 00000000`0930f990 00000000`00df307e sqlservr!SOS_Scheduler::ProcessTasks+0x76
    07 00000000`0930fa00 00000000`00df3235 sqlservr!SchedulerManager::WorkerEntryPoint+0x2d2
    08 00000000`0930fae0 00000000`00df2ab9 sqlservr!SystemThread::RunWorker+0xcc
    09 00000000`0930fb20 00000000`00df38ca sqlservr!SystemThreadDispatcher::ProcessWorker+0x2db
    0a 00000000`0930fbd0 00000000`74c637d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x173
    0b 00000000`0930fc70 00000000`74c63894 msvcr80!_callthreadstartex(void)+0x17 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 348]
    0c 00000000`0930fca0 00000000`76f059ed msvcr80!_threadstartex(void * ptd = 0x00000000`00000000)+0x84 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 326]
    0d 00000000`0930fcd0 00000000`7703c541 kernel32!BaseThreadInitThunk+0xd
    0e 00000000`0930fd00 00000000`00000000 ntdll!RtlUserThreadStart+0x21

    15 Id: 468.864 Suspend: 0 Teb: 000007ff`fff92000 Unfrozen
    # Child-SP RetAddr Call Site
    00 00000000`0961eaa8 00000000`76f62d50 ntdll!ZwSignalAndWaitForSingleObject+0xa
    01 00000000`0961eab0 00000000`0089526b kernel32!SignalObjectAndWait+0x110
    02 00000000`0961eb60 00000000`00dea167 sqlservr!SOS_Scheduler::Switch+0x181
    03 00000000`0961f2b0 00000000`0089eba0 sqlservr!SOS_Scheduler::Idle+0xb6
    04 00000000`0961f2e0 00000000`0089efe2 sqlservr!SOS_Task::Param::Execute+0x12a
    05 00000000`0961f3f0 00000000`0089ee27 sqlservr!SOS_Scheduler::RunTask+0x96
    06 00000000`0961f450 00000000`00df307e sqlservr!SOS_Scheduler::ProcessTasks+0x128
    07 00000000`0961f4c0 00000000`00df3235 sqlservr!SchedulerManager::WorkerEntryPoint+0x2d2
    08 00000000`0961f5a0 00000000`00df2ab9 sqlservr!SystemThread::RunWorker+0xcc
    09 00000000`0961f5e0 00000000`00df38ca sqlservr!SystemThreadDispatcher::ProcessWorker+0x2db
    0a 00000000`0961f690 00000000`74c637d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x173
    0b 00000000`0961f730 00000000`74c63894 msvcr80!_callthreadstartex(void)+0x17 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 348]
    0c 00000000`0961f760 00000000`76f059ed msvcr80!_threadstartex(void * ptd = 0x00000000`00000000)+0x84 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 326]
    0d 00000000`0961f790 00000000`7703c541 kernel32!BaseThreadInitThunk+0xd
    0e 00000000`0961f7c0 00000000`00000000 ntdll!RtlUserThreadStart+0x21

    16 Id: 468.87c Suspend: 0 Teb: 000007ff`fff8e000 Unfrozen
    # Child-SP RetAddr Call Site
    00 00000000`09d2ee88 00000000`76f62d50 ntdll!ZwSignalAndWaitForSingleObject+0xa
    01 00000000`09d2ee90 00000000`0089526b kernel32!SignalObjectAndWait+0x110
    02 00000000`09d2ef40 00000000`00dea167 sqlservr!SOS_Scheduler::Switch+0x181
    03 00000000`09d2f690 00000000`0089eba0 sqlservr!SOS_Scheduler::Idle+0xb6
    04 00000000`09d2f6c0 00000000`0089efe2 sqlservr!SOS_Task::Param::Execute+0x12a
    05 00000000`09d2f7d0 00000000`0089ee27 sqlservr!SOS_Scheduler::RunTask+0x96
    06 00000000`09d2f830 00000000`00df307e sqlservr!SOS_Scheduler::ProcessTasks+0x128
    07 00000000`09d2f8a0 00000000`00df3235 sqlservr!SchedulerManager::WorkerEntryPoint+0x2d2
    08 00000000`09d2f980 00000000`00df2ab9 sqlservr!SystemThread::RunWorker+0xcc
    09 00000000`09d2f9c0 00000000`00df38ca sqlservr!SystemThreadDispatcher::ProcessWorker+0x2db
    0a 00000000`09d2fa70 00000000`74c637d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x173
    0b 00000000`09d2fb10 00000000`74c63894 msvcr80!_callthreadstartex(void)+0x17 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 348]
    0c 00000000`09d2fb40 00000000`76f059ed msvcr80!_threadstartex(void * ptd = 0x00000000`00000000)+0x84 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 326]
    0d 00000000`09d2fb70 00000000`7703c541 kernel32!BaseThreadInitThunk+0xd
    0e 00000000`09d2fba0 00000000`00000000 ntdll!RtlUserThreadStart+0x21

    17 Id: 468.884 Suspend: 0 Teb: 000007ff`fff8a000 Unfrozen
    # Child-SP RetAddr Call Site
    00 00000000`0a3cebd8 00000000`76f62d50 ntdll!ZwSignalAndWaitForSingleObject+0xa
    01 00000000`0a3cebe0 00000000`0089526b kernel32!SignalObjectAndWait+0x110
    02 00000000`0a3cec90 00000000`00dea167 sqlservr!SOS_Scheduler::Switch+0x181
    03 00000000`0a3cf3e0 00000000`0089eba0 sqlservr!SOS_Scheduler::Idle+0xb6
    04 00000000`0a3cf410 00000000`0089efe2 sqlservr!SOS_Task::Param::Execute+0x12a
    05 00000000`0a3cf520 00000000`0089ee27 sqlservr!SOS_Scheduler::RunTask+0x96
    06 00000000`0a3cf580 00000000`00df307e sqlservr!SOS_Scheduler::ProcessTasks+0x128
    07 00000000`0a3cf5f0 00000000`00df3235 sqlservr!SchedulerManager::WorkerEntryPoint+0x2d2
    08 00000000`0a3cf6d0 00000000`00df2ab9 sqlservr!SystemThread::RunWorker+0xcc
    09 00000000`0a3cf710 00000000`00df38ca sqlservr!SystemThreadDispatcher::ProcessWorker+0x2db
    0a 00000000`0a3cf7c0 00000000`74c637d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x173
    0b 00000000`0a3cf860 00000000`74c63894 msvcr80!_callthreadstartex(void)+0x17 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 348]
    0c 00000000`0a3cf890 00000000`76f059ed msvcr80!_threadstartex(void * ptd = 0x00000000`00000000)+0x84 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 326]
    0d 00000000`0a3cf8c0 00000000`7703c541 kernel32!BaseThreadInitThunk+0xd
    0e 00000000`0a3cf8f0 00000000`00000000 ntdll!RtlUserThreadStart+0x21

    18 Id: 468.888 Suspend: 0 Teb: 000007ff`fff88000 Unfrozen
    # Child-SP RetAddr Call Site
    00 00000000`0a77d588 00000000`76f62d50 ntdll!ZwSignalAndWaitForSingleObject+0xa
    01 00000000`0a77d590 00000000`0089526b kernel32!SignalObjectAndWait+0x110
    02 00000000`0a77d640 00000000`0089317a sqlservr!SOS_Scheduler::Switch+0x181
    03 00000000`0a77dd90 00000000`008928a0 sqlservr!SOS_Scheduler::SuspendNonPreemptive+0xca
    04 00000000`0a77ddd0 00000000`008929cc sqlservr!SOS_Scheduler::Suspend+0x2d
    05 00000000`0a77de00 00000000`0151e0e2 sqlservr!EventInternal<Spinlock >::Wait+0x1a8
    06 00000000`0a77de50 00000000`0151ef15 sqlservr!CServiceBrokerMgr::PrimaryEventHandler+0x14a
    07 00000000`0a77e0b0 00000000`0154630a sqlservr!CSbEventHandler::Invoke+0x15
    08 00000000`0a77e0e0 00000000`01545eb2 sqlservr!CSbTask::TaskStart+0x412
    09 00000000`0a77f310 00000000`0089eba0 sqlservr!CSbTask::BeginTaskStart+0x1a
    0a 00000000`0a77f350 00000000`0089efe2 sqlservr!SOS_Task::Param::Execute+0x12a
    0b 00000000`0a77f460 00000000`0089ee27 sqlservr!SOS_Scheduler::RunTask+0x96
    0c 00000000`0a77f4c0 00000000`00df307e sqlservr!SOS_Scheduler::ProcessTasks+0x128
    0d 00000000`0a77f530 00000000`00df3235 sqlservr!SchedulerManager::WorkerEntryPoint+0x2d2
    0e 00000000`0a77f610 00000000`00df2ab9 sqlservr!SystemThread::RunWorker+0xcc
    0f 00000000`0a77f650 00000000`00df38ca sqlservr!SystemThreadDispatcher::ProcessWorker+0x2db
    10 00000000`0a77f700 00000000`74c637d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x173
    11 00000000`0a77f7a0 00000000`74c63894 msvcr80!_callthreadstartex(void)+0x17 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 348]
    12 00000000`0a77f7d0 00000000`76f059ed msvcr80!_threadstartex(void * ptd = 0x00000000`00000000)+0x84 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 326]
    13 00000000`0a77f800 00000000`7703c541 kernel32!BaseThreadInitThunk+0xd
    14 00000000`0a77f830 00000000`00000000 ntdll!RtlUserThreadStart+0x21

    19 Id: 468.88c Suspend: 0 Teb: 000007ff`fff86000 Unfrozen
    # Child-SP RetAddr Call Site
    00 00000000`0a98ed38 00000000`76f62d50 ntdll!ZwSignalAndWaitForSingleObject+0xa
    01 00000000`0a98ed40 00000000`0089526b kernel32!SignalObjectAndWait+0x110
    02 00000000`0a98edf0 00000000`00dea167 sqlservr!SOS_Scheduler::Switch+0x181
    03 00000000`0a98f540 00000000`0089eba0 sqlservr!SOS_Scheduler::Idle+0xb6
    04 00000000`0a98f570 00000000`0089efe2 sqlservr!SOS_Task::Param::Execute+0x12a
    05 00000000`0a98f680 00000000`0089ee27 sqlservr!SOS_Scheduler::RunTask+0x96
    06 00000000`0a98f6e0 00000000`00df307e sqlservr!SOS_Scheduler::ProcessTasks+0x128
    07 00000000`0a98f750 00000000`00df3235 sqlservr!SchedulerManager::WorkerEntryPoint+0x2d2
    08 00000000`0a98f830 00000000`00df2ab9 sqlservr!SystemThread::RunWorker+0xcc
    09 00000000`0a98f870 00000000`00df38ca sqlservr!SystemThreadDispatcher::ProcessWorker+0x2db
    0a 00000000`0a98f920 00000000`74c637d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x173
    0b 00000000`0a98f9c0 00000000`74c63894 msvcr80!_callthreadstartex(void)+0x17 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 348]
    0c 00000000`0a98f9f0 00000000`76f059ed msvcr80!_threadstartex(void * ptd = 0x00000000`00000000)+0x84 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 326]
    0d 00000000`0a98fa20 00000000`7703c541 kernel32!BaseThreadInitThunk+0xd
    0e 00000000`0a98fa50 00000000`00000000 ntdll!RtlUserThreadStart+0x21

    20 Id: 468.894 Suspend: 0 Teb: 000007ff`fff84000 Unfrozen
    # Child-SP RetAddr Call Site
    00 00000000`0abbda28 00000000`76f62d50 ntdll!ZwSignalAndWaitForSingleObject+0xa
    01 00000000`0abbda30 00000000`0089526b kernel32!SignalObjectAndWait+0x110
    02 00000000`0abbdae0 00000000`0089317a sqlservr!SOS_Scheduler::Switch+0x181
    03 00000000`0abbe230 00000000`008928a0 sqlservr!SOS_Scheduler::SuspendNonPreemptive+0xca
    04 00000000`0abbe270 00000000`008929cc sqlservr!SOS_Scheduler::Suspend+0x2d
    05 00000000`0abbe2a0 00000000`0154d831 sqlservr!EventInternal<Spinlock >::Wait+0x1a8
    06 00000000`0abbe2f0 00000000`0154e9ad sqlservr!CSbTransmitter::TransmitterThread+0x221
    07 00000000`0abbe6b0 00000000`0154630a sqlservr!CSbTransmitter::BeginTransmitterThread+0x9
    08 00000000`0abbe6e0 00000000`01545eb2 sqlservr!CSbTask::TaskStart+0x412
    09 00000000`0abbf910 00000000`0089eba0 sqlservr!CSbTask::BeginTaskStart+0x1a
    0a 00000000`0abbf950 00000000`0089efe2 sqlservr!SOS_Task::Param::Execute+0x12a
    0b 00000000`0abbfa60 00000000`0089ee27 sqlservr!SOS_Scheduler::RunTask+0x96
    0c 00000000`0abbfac0 00000000`00df307e sqlservr!SOS_Scheduler::ProcessTasks+0x128
    0d 00000000`0abbfb30 00000000`00df3235 sqlservr!SchedulerManager::WorkerEntryPoint+0x2d2
    0e 00000000`0abbfc10 00000000`00df2ab9 sqlservr!SystemThread::RunWorker+0xcc
    0f 00000000`0abbfc50 00000000`00df38ca sqlservr!SystemThreadDispatcher::ProcessWorker+0x2db
    10 00000000`0abbfd00 00000000`74c637d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x173
    11 00000000`0abbfda0 00000000`74c63894 msvcr80!_callthreadstartex(void)+0x17 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 348]
    12 00000000`0abbfdd0 00000000`76f059ed msvcr80!_threadstartex(void * ptd = 0x00000000`00000000)+0x84 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 326]
    13 00000000`0abbfe00 00000000`7703c541 kernel32!BaseThreadInitThunk+0xd
    14 00000000`0abbfe30 00000000`00000000 ntdll!RtlUserThreadStart+0x21

    21 Id: 468.898 Suspend: 0 Teb: 000007ff`fff82000 Unfrozen
    # Child-SP RetAddr Call Site
    00 00000000`0adeee98 00000000`76f62d50 ntdll!ZwSignalAndWaitForSingleObject+0xa
    01 00000000`0adeeea0 00000000`0089526b kernel32!SignalObjectAndWait+0x110
    02 00000000`0adeef50 00000000`00dea167 sqlservr!SOS_Scheduler::Switch+0x181
    03 00000000`0adef6a0 00000000`0089eba0 sqlservr!SOS_Scheduler::Idle+0xb6
    04 00000000`0adef6d0 00000000`0089efe2 sqlservr!SOS_Task::Param::Execute+0x12a
    05 00000000`0adef7e0 00000000`0089ee27 sqlservr!SOS_Scheduler::RunTask+0x96
    06 00000000`0adef840 00000000`00df307e sqlservr!SOS_Scheduler::ProcessTasks+0x128
    07 00000000`0adef8b0 00000000`00df3235 sqlservr!SchedulerManager::WorkerEntryPoint+0x2d2
    08 00000000`0adef990 00000000`00df2ab9 sqlservr!SystemThread::RunWorker+0xcc
    09 00000000`0adef9d0 00000000`00df38ca sqlservr!SystemThreadDispatcher::ProcessWorker+0x2db
    0a 00000000`0adefa80 00000000`74c637d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x173
    0b 00000000`0adefb20 00000000`74c63894 msvcr80!_callthreadstartex(void)+0x17 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 348]
    0c 00000000`0adefb50 00000000`76f059ed msvcr80!_threadstartex(void * ptd = 0x00000000`00000000)+0x84 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 326]
    0d 00000000`0adefb80 00000000`7703c541 kernel32!BaseThreadInitThunk+0xd
    0e 00000000`0adefbb0 00000000`00000000 ntdll!RtlUserThreadStart+0x21

    22 Id: 468.89c Suspend: 0 Teb: 000007ff`fff80000 Unfrozen
    # Child-SP RetAddr Call Site
    00 00000000`0b01f0a8 000007fe`fd2816ad ntdll!ZwRemoveIoCompletion+0xa
    01 00000000`0b01f0b0 00000000`76ef99a1 KERNELBASE!GetQueuedCompletionStatus+0x3d
    02 00000000`0b01f110 00000000`008cb9b8 kernel32!GetQueuedCompletionStatusStub+0x11
    03 00000000`0b01f150 00000000`0089eba0 sqlservr!SOS_Node::ListenOnIOCompletionPort+0x11d
    04 00000000`0b01f2e0 00000000`0089efe2 sqlservr!SOS_Task::Param::Execute+0x12a
    05 00000000`0b01f3f0 00000000`0089ee27 sqlservr!SOS_Scheduler::RunTask+0x96
    06 00000000`0b01f450 00000000`00df307e sqlservr!SOS_Scheduler::ProcessTasks+0x128
    07 00000000`0b01f4c0 00000000`00df3235 sqlservr!SchedulerManager::WorkerEntryPoint+0x2d2
    08 00000000`0b01f5a0 00000000`00df2ab9 sqlservr!SystemThread::RunWorker+0xcc
    09 00000000`0b01f5e0 00000000`00df38ca sqlservr!SystemThreadDispatcher::ProcessWorker+0x2db
    0a 00000000`0b01f690 00000000`74c637d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x173
    0b 00000000`0b01f730 00000000`74c63894 msvcr80!_callthreadstartex(void)+0x17 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 348]
    0c 00000000`0b01f760 00000000`76f059ed msvcr80!_threadstartex(void * ptd = 0x00000000`00000000)+0x84 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 326]
    0d 00000000`0b01f790 00000000`7703c541 kernel32!BaseThreadInitThunk+0xd
    0e 00000000`0b01f7c0 00000000`00000000 ntdll!RtlUserThreadStart+0x21

    23 Id: 468.8a0 Suspend: 0 Teb: 000007ff`fff7e000 Unfrozen
    # Child-SP RetAddr Call Site
    00 00000000`0b2cf578 000007fe`fd281430 ntdll!NtWaitForMultipleObjects+0xa
    01 00000000`0b2cf580 00000000`76f006e0 KERNELBASE!GetCurrentProcess+0x40
    02 00000000`0b2cf680 00000000`02eecf58 kernel32!WaitForMultipleObjects+0xb0
    03 00000000`0b2cf710 00000000`02ed9554 sqlservr!XE_DispatcherQueue::Dequeue+0x90
    04 00000000`0b2cf7f0 00000000`02ed8834 sqlservr!SOS_DispatcherPool::Dequeue+0x54
    05 00000000`0b2cf820 00000000`02ed6b78 sqlservr!Dispatcher::Run+0x44
    06 00000000`0b2cf8b0 00000000`02e31f0b sqlservr!XE_Engine::DispatcherEntryPointWithContext+0xb4
    07 00000000`0b2cf950 00000000`02ed6a6d sqlservr!XESQLSetupThreadContext+0xff
    08 00000000`0b2cfa30 00000000`02edaba7 sqlservr!XE_Engine::DispatcherEntryPoint+0x45
    09 00000000`0b2cfa70 00000000`0089eba0 sqlservr!SOS_DispatcherPool::RunDispatcher+0x1f
    0a 00000000`0b2cfaa0 00000000`0089efe2 sqlservr!SOS_Task::Param::Execute+0x12a
    0b 00000000`0b2cfbb0 00000000`0089ee27 sqlservr!SOS_Scheduler::RunTask+0x96
    0c 00000000`0b2cfc10 00000000`00df307e sqlservr!SOS_Scheduler::ProcessTasks+0x128
    0d 00000000`0b2cfc80 00000000`00df3235 sqlservr!SchedulerManager::WorkerEntryPoint+0x2d2
    0e 00000000`0b2cfd60 00000000`00df2ab9 sqlservr!SystemThread::RunWorker+0xcc
    0f 00000000`0b2cfda0 00000000`00df38ca sqlservr!SystemThreadDispatcher::ProcessWorker+0x2db
    10 00000000`0b2cfe50 00000000`74c637d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x173
    11 00000000`0b2cfef0 00000000`74c63894 msvcr80!_callthreadstartex(void)+0x17 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 348]
    12 00000000`0b2cff20 00000000`76f059ed msvcr80!_threadstartex(void * ptd = 0x00000000`00000000)+0x84 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 326]
    13 00000000`0b2cff50 00000000`7703c541 kernel32!BaseThreadInitThunk+0xd
    14 00000000`0b2cff80 00000000`00000000 ntdll!RtlUserThreadStart+0x21

    24 Id: 468.8a4 Suspend: 0 Teb: 000007ff`fff7c000 Unfrozen
    # Child-SP RetAddr Call Site
    00 00000000`0b5deeb8 000007fe`fd281430 ntdll!NtWaitForMultipleObjects+0xa
    01 00000000`0b5deec0 00000000`76f006e0 KERNELBASE!GetCurrentProcess+0x40
    02 00000000`0b5defc0 00000000`008ad06e kernel32!WaitForMultipleObjects+0xb0
    03 00000000`0b5df050 00000000`02dbd560 sqlservr!ResourceMonitor::CheckIndicators+0x176
    04 00000000`0b5df100 00000000`0296a08b sqlservr!ResourceMonitor::ResourceMonitorTask+0x1b8
    05 00000000`0b5df240 00000000`0089eba0 sqlservr!SetupResourceMonitorTaskContext+0x133
    06 00000000`0b5df580 00000000`0089efe2 sqlservr!SOS_Task::Param::Execute+0x12a
    07 00000000`0b5df690 00000000`0089ee27 sqlservr!SOS_Scheduler::RunTask+0x96
    08 00000000`0b5df6f0 00000000`00df307e sqlservr!SOS_Scheduler::ProcessTasks+0x128
    09 00000000`0b5df760 00000000`00df3235 sqlservr!SchedulerManager::WorkerEntryPoint+0x2d2
    0a 00000000`0b5df840 00000000`00df2ab9 sqlservr!SystemThread::RunWorker+0xcc
    0b 00000000`0b5df880 00000000`00df38ca sqlservr!SystemThreadDispatcher::ProcessWorker+0x2db
    0c 00000000`0b5df930 00000000`74c637d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x173
    0d 00000000`0b5df9d0 00000000`74c63894 msvcr80!_callthreadstartex(void)+0x17 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 348]
    0e 00000000`0b5dfa00 00000000`76f059ed msvcr80!_threadstartex(void * ptd = 0x00000000`00000000)+0x84 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 326]
    0f 00000000`0b5dfa30 00000000`7703c541 kernel32!BaseThreadInitThunk+0xd
    10 00000000`0b5dfa60 00000000`00000000 ntdll!RtlUserThreadStart+0x21

    25 Id: 468.91c Suspend: 0 Teb: 000007ff`fff7a000 Unfrozen
    # Child-SP RetAddr Call Site
    00 00000000`0cabeb98 000007fe`fd2810dc ntdll!NtWaitForSingleObject+0xa
    01 00000000`0cabeba0 00000000`00893d3f KERNELBASE!WaitForSingleObjectEx+0x9c
    02 00000000`0cabec40 00000000`0089317a sqlservr!SOS_Scheduler::SwitchContext+0x26d
    03 00000000`0cabf0d0 00000000`008928a0 sqlservr!SOS_Scheduler::SuspendNonPreemptive+0xca
    04 00000000`0cabf110 00000000`008929cc sqlservr!SOS_Scheduler::Suspend+0x2d
    05 00000000`0cabf140 00000000`008accab sqlservr!EventInternal<Spinlock >::Wait+0x1a8
    06 00000000`0cabf190 00000000`01457351 sqlservr!CTraceManagementTask::Invoke+0xbe
    07 00000000`0cabf1f0 00000000`0089eba0 sqlservr!CTraceBatchTask::Task+0x1ad
    08 00000000`0cabf2d0 00000000`0089efe2 sqlservr!SOS_Task::Param::Execute+0x12a
    09 00000000`0cabf3e0 00000000`0089ee27 sqlservr!SOS_Scheduler::RunTask+0x96
    0a 00000000`0cabf440 00000000`00df307e sqlservr!SOS_Scheduler::ProcessTasks+0x128
    0b 00000000`0cabf4b0 00000000`00df3235 sqlservr!SchedulerManager::WorkerEntryPoint+0x2d2
    0c 00000000`0cabf590 00000000`00df2ab9 sqlservr!SystemThread::RunWorker+0xcc
    0d 00000000`0cabf5d0 00000000`00df38ca sqlservr!SystemThreadDispatcher::ProcessWorker+0x2db
    0e 00000000`0cabf680 00000000`74c637d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x173
    0f 00000000`0cabf720 00000000`74c63894 msvcr80!_callthreadstartex(void)+0x17 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 348]
    10 00000000`0cabf750 00000000`76f059ed msvcr80!_threadstartex(void * ptd = 0x00000000`00000000)+0x84 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 326]
    11 00000000`0cabf780 00000000`7703c541 kernel32!BaseThreadInitThunk+0xd
    12 00000000`0cabf7b0 00000000`00000000 ntdll!RtlUserThreadStart+0x21

    26 Id: 468.920 Suspend: 0 Teb: 000007ff`fff78000 Unfrozen
    # Child-SP RetAddr Call Site
    00 00000000`0cd4d828 00000000`76f62d50 ntdll!ZwSignalAndWaitForSingleObject+0xa
    01 00000000`0cd4d830 00000000`0089526b kernel32!SignalObjectAndWait+0x110
    02 00000000`0cd4d8e0 00000000`0089317a sqlservr!SOS_Scheduler::Switch+0x181
    03 00000000`0cd4e030 00000000`008928a0 sqlservr!SOS_Scheduler::SuspendNonPreemptive+0xca
    04 00000000`0cd4e070 00000000`008929cc sqlservr!SOS_Scheduler::Suspend+0x2d
    05 00000000`0cd4e0a0 00000000`008ac8c3 sqlservr!EventInternal<Spinlock >::Wait+0x1a8
    06 00000000`0cd4e0f0 00000000`00946aa4 sqlservr!ResQueueBase::Dequeue+0x142
    07 00000000`0cd4e1b0 00000000`0089eba0 sqlservr!SQLServerLogMgr::LogWriter+0x1ef
    08 00000000`0cd4f750 00000000`0089efe2 sqlservr!SOS_Task::Param::Execute+0x12a
    09 00000000`0cd4f860 00000000`0089ee27 sqlservr!SOS_Scheduler::RunTask+0x96
    0a 00000000`0cd4f8c0 00000000`00df307e sqlservr!SOS_Scheduler::ProcessTasks+0x128
    0b 00000000`0cd4f930 00000000`00df3235 sqlservr!SchedulerManager::WorkerEntryPoint+0x2d2
    0c 00000000`0cd4fa10 00000000`00df2ab9 sqlservr!SystemThread::RunWorker+0xcc
    0d 00000000`0cd4fa50 00000000`00df38ca sqlservr!SystemThreadDispatcher::ProcessWorker+0x2db
    0e 00000000`0cd4fb00 00000000`74c637d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x173
    0f 00000000`0cd4fba0 00000000`74c63894 msvcr80!_callthreadstartex(void)+0x17 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 348]
    10 00000000`0cd4fbd0 00000000`76f059ed msvcr80!_threadstartex(void * ptd = 0x00000000`00000000)+0x84 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 326]
    11 00000000`0cd4fc00 00000000`7703c541 kernel32!BaseThreadInitThunk+0xd
    12 00000000`0cd4fc30 00000000`00000000 ntdll!RtlUserThreadStart+0x21

    27 Id: 468.92c Suspend: 0 Teb: 000007ff`fff76000 Unfrozen
    # Child-SP RetAddr Call Site
    00 00000000`0cfdf038 00000000`76f62d50 ntdll!ZwSignalAndWaitForSingleObject+0xa
    01 00000000`0cfdf040 00000000`0089526b kernel32!SignalObjectAndWait+0x110
    02 00000000`0cfdf0f0 00000000`0089317a sqlservr!SOS_Scheduler::Switch+0x181
    03 00000000`0cfdf840 00000000`008928a0 sqlservr!SOS_Scheduler::SuspendNonPreemptive+0xca
    04 00000000`0cfdf880 00000000`0089ed59 sqlservr!SOS_Scheduler::Suspend+0x2d
    05 00000000`0cfdf8b0 00000000`0089ede2 sqlservr!WorkDispatcher::DequeueTask+0x472
    06 00000000`0cfdf940 00000000`00df307e sqlservr!SOS_Scheduler::ProcessTasks+0x76
    07 00000000`0cfdf9b0 00000000`00df3235 sqlservr!SchedulerManager::WorkerEntryPoint+0x2d2
    08 00000000`0cfdfa90 00000000`00df2ab9 sqlservr!SystemThread::RunWorker+0xcc
    09 00000000`0cfdfad0 00000000`00df38ca sqlservr!SystemThreadDispatcher::ProcessWorker+0x2db
    0a 00000000`0cfdfb80 00000000`74c637d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x173
    0b 00000000`0cfdfc20 00000000`74c63894 msvcr80!_callthreadstartex(void)+0x17 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 348]
    0c 00000000`0cfdfc50 00000000`76f059ed msvcr80!_threadstartex(void * ptd = 0x00000000`00000000)+0x84 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 326]
    0d 00000000`0cfdfc80 00000000`7703c541 kernel32!BaseThreadInitThunk+0xd
    0e 00000000`0cfdfcb0 00000000`00000000 ntdll!RtlUserThreadStart+0x21

    28 Id: 468.930 Suspend: 0 Teb: 000007ff`fff74000 Unfrozen
    # Child-SP RetAddr Call Site
    00 00000000`0d20eef8 00000000`76f62d50 ntdll!ZwSignalAndWaitForSingleObject+0xa
    01 00000000`0d20ef00 00000000`0089526b kernel32!SignalObjectAndWait+0x110
    02 00000000`0d20efb0 00000000`00dea167 sqlservr!SOS_Scheduler::Switch+0x181
    03 00000000`0d20f700 00000000`0089eba0 sqlservr!SOS_Scheduler::Idle+0xb6
    04 00000000`0d20f730 00000000`0089efe2 sqlservr!SOS_Task::Param::Execute+0x12a
    05 00000000`0d20f840 00000000`0089ee27 sqlservr!SOS_Scheduler::RunTask+0x96
    06 00000000`0d20f8a0 00000000`00df307e sqlservr!SOS_Scheduler::ProcessTasks+0x128
    07 00000000`0d20f910 00000000`00df3235 sqlservr!SchedulerManager::WorkerEntryPoint+0x2d2
    08 00000000`0d20f9f0 00000000`00df2ab9 sqlservr!SystemThread::RunWorker+0xcc
    09 00000000`0d20fa30 00000000`00df38ca sqlservr!SystemThreadDispatcher::ProcessWorker+0x2db
    0a 00000000`0d20fae0 00000000`74c637d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x173
    0b 00000000`0d20fb80 00000000`74c63894 msvcr80!_callthreadstartex(void)+0x17 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 348]
    0c 00000000`0d20fbb0 00000000`76f059ed msvcr80!_threadstartex(void * ptd = 0x00000000`00000000)+0x84 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 326]
    0d 00000000`0d20fbe0 00000000`7703c541 kernel32!BaseThreadInitThunk+0xd
    0e 00000000`0d20fc10 00000000`00000000 ntdll!RtlUserThreadStart+0x21

    29 Id: 468.934 Suspend: 0 Teb: 000007ff`fff72000 Unfrozen
    # Child-SP RetAddr Call Site
    00 00000000`0d53caa8 000007fe`fd2810dc ntdll!NtWaitForSingleObject+0xa
    01 00000000`0d53cab0 00000000`00893d3f KERNELBASE!WaitForSingleObjectEx+0x9c
    02 00000000`0d53cb50 00000000`0089317a sqlservr!SOS_Scheduler::SwitchContext+0x26d
    03 00000000`0d53cfe0 00000000`008928a0 sqlservr!SOS_Scheduler::SuspendNonPreemptive+0xca
    04 00000000`0d53d020 00000000`008929cc sqlservr!SOS_Scheduler::Suspend+0x2d
    05 00000000`0d53d050 00000000`008aa101 sqlservr!EventInternal<Spinlock >::Wait+0x1a8
    06 00000000`0d53d0a0 00000000`027a88cb sqlservr!BPool::LazyWriter+0x61d
    07 00000000`0d53f550 00000000`0089eba0 sqlservr!lazywriter+0x2c7
    08 00000000`0d53fa50 00000000`0089efe2 sqlservr!SOS_Task::Param::Execute+0x12a
    09 00000000`0d53fb60 00000000`0089ee27 sqlservr!SOS_Scheduler::RunTask+0x96
    0a 00000000`0d53fbc0 00000000`00df307e sqlservr!SOS_Scheduler::ProcessTasks+0x128
    0b 00000000`0d53fc30 00000000`00df3235 sqlservr!SchedulerManager::WorkerEntryPoint+0x2d2
    0c 00000000`0d53fd10 00000000`00df2ab9 sqlservr!SystemThread::RunWorker+0xcc
    0d 00000000`0d53fd50 00000000`00df38ca sqlservr!SystemThreadDispatcher::ProcessWorker+0x2db
    0e 00000000`0d53fe00 00000000`74c637d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x173
    0f 00000000`0d53fea0 00000000`74c63894 msvcr80!_callthreadstartex(void)+0x17 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 348]
    10 00000000`0d53fed0 00000000`76f059ed msvcr80!_threadstartex(void * ptd = 0x00000000`00000000)+0x84 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 326]
    11 00000000`0d53ff00 00000000`7703c541 kernel32!BaseThreadInitThunk+0xd
    12 00000000`0d53ff30 00000000`00000000 ntdll!RtlUserThreadStart+0x21

    30 Id: 468.938 Suspend: 0 Teb: 000007ff`fff70000 Unfrozen
    # Child-SP RetAddr Call Site
    00 00000000`0d7ef0f8 00000000`76f62d50 ntdll!ZwSignalAndWaitForSingleObject+0xa
    01 00000000`0d7ef100 00000000`0089526b kernel32!SignalObjectAndWait+0x110
    02 00000000`0d7ef1b0 00000000`00dea167 sqlservr!SOS_Scheduler::Switch+0x181
    03 00000000`0d7ef900 00000000`0089eba0 sqlservr!SOS_Scheduler::Idle+0xb6
    04 00000000`0d7ef930 00000000`0089efe2 sqlservr!SOS_Task::Param::Execute+0x12a
    05 00000000`0d7efa40 00000000`0089ee27 sqlservr!SOS_Scheduler::RunTask+0x96
    06 00000000`0d7efaa0 00000000`00df307e sqlservr!SOS_Scheduler::ProcessTasks+0x128
    07 00000000`0d7efb10 00000000`00df3235 sqlservr!SchedulerManager::WorkerEntryPoint+0x2d2
    08 00000000`0d7efbf0 00000000`00df2ab9 sqlservr!SystemThread::RunWorker+0xcc
    09 00000000`0d7efc30 00000000`00df38ca sqlservr!SystemThreadDispatcher::ProcessWorker+0x2db
    0a 00000000`0d7efce0 00000000`74c637d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x173
    0b 00000000`0d7efd80 00000000`74c63894 msvcr80!_callthreadstartex(void)+0x17 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 348]
    0c 00000000`0d7efdb0 00000000`76f059ed msvcr80!_threadstartex(void * ptd = 0x00000000`00000000)+0x84 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 326]
    0d 00000000`0d7efde0 00000000`7703c541 kernel32!BaseThreadInitThunk+0xd
    0e 00000000`0d7efe10 00000000`00000000 ntdll!RtlUserThreadStart+0x21

    31 Id: 468.940 Suspend: 0 Teb: 000007ff`fff6e000 Unfrozen
    # Child-SP RetAddr Call Site
    00 00000000`0dadf5b8 000007fe`fd281203 ntdll!NtDelayExecution+0xa
    01 00000000`0dadf5c0 00000000`008c2b49 KERNELBASE!SleepEx+0xb3
    02 00000000`0dadf660 00000000`02ded851 sqlservr!SchedulerMonitor::Run+0x1f3
    03 00000000`0dadf780 00000000`0089eba0 sqlservr!SchedulerMonitor::EntryPoint+0x9
    04 00000000`0dadf7b0 00000000`0089efe2 sqlservr!SOS_Task::Param::Execute+0x12a
    05 00000000`0dadf8c0 00000000`0089ee27 sqlservr!SOS_Scheduler::RunTask+0x96
    06 00000000`0dadf920 00000000`00df307e sqlservr!SOS_Scheduler::ProcessTasks+0x128
    07 00000000`0dadf990 00000000`00df3235 sqlservr!SchedulerManager::WorkerEntryPoint+0x2d2
    08 00000000`0dadfa70 00000000`00df2ab9 sqlservr!SystemThread::RunWorker+0xcc
    09 00000000`0dadfab0 00000000`00df38ca sqlservr!SystemThreadDispatcher::ProcessWorker+0x2db
    0a 00000000`0dadfb60 00000000`74c637d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x173
    0b 00000000`0dadfc00 00000000`74c63894 msvcr80!_callthreadstartex(void)+0x17 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 348]
    0c 00000000`0dadfc30 00000000`76f059ed msvcr80!_threadstartex(void * ptd = 0x00000000`00000000)+0x84 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 326]
    0d 00000000`0dadfc60 00000000`7703c541 kernel32!BaseThreadInitThunk+0xd
    0e 00000000`0dadfc90 00000000`00000000 ntdll!RtlUserThreadStart+0x21

    32 Id: 468.944 Suspend: 0 Teb: 000007ff`fff6c000 Unfrozen
    # Child-SP RetAddr Call Site
    00 00000000`0de4ebf8 00000000`76f62d50 ntdll!ZwSignalAndWaitForSingleObject+0xa
    01 00000000`0de4ec00 00000000`0089526b kernel32!SignalObjectAndWait+0x110
    02 00000000`0de4ecb0 00000000`00dea167 sqlservr!SOS_Scheduler::Switch+0x181
    03 00000000`0de4f400 00000000`0089eba0 sqlservr!SOS_Scheduler::Idle+0xb6
    04 00000000`0de4f430 00000000`0089efe2 sqlservr!SOS_Task::Param::Execute+0x12a
    05 00000000`0de4f540 00000000`0089ee27 sqlservr!SOS_Scheduler::RunTask+0x96
    06 00000000`0de4f5a0 00000000`00df307e sqlservr!SOS_Scheduler::ProcessTasks+0x128
    07 00000000`0de4f610 00000000`00df3235 sqlservr!SchedulerManager::WorkerEntryPoint+0x2d2
    08 00000000`0de4f6f0 00000000`00df2ab9 sqlservr!SystemThread::RunWorker+0xcc
    09 00000000`0de4f730 00000000`00df38ca sqlservr!SystemThreadDispatcher::ProcessWorker+0x2db
    0a 00000000`0de4f7e0 00000000`74c637d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x173
    0b 00000000`0de4f880 00000000`74c63894 msvcr80!_callthreadstartex(void)+0x17 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 348]
    0c 00000000`0de4f8b0 00000000`76f059ed msvcr80!_threadstartex(void * ptd = 0x00000000`00000000)+0x84 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 326]
    0d 00000000`0de4f8e0 00000000`7703c541 kernel32!BaseThreadInitThunk+0xd
    0e 00000000`0de4f910 00000000`00000000 ntdll!RtlUserThreadStart+0x21

    33 Id: 468.960 Suspend: 0 Teb: 000007ff`fff6a000 Unfrozen
    # Child-SP RetAddr Call Site
    00 00000000`0e14e948 00000000`76f62d50 ntdll!ZwSignalAndWaitForSingleObject+0xa
    01 00000000`0e14e950 00000000`0089526b kernel32!SignalObjectAndWait+0x110
    02 00000000`0e14ea00 00000000`0089317a sqlservr!SOS_Scheduler::Switch+0x181
    03 00000000`0e14f150 00000000`008928a0 sqlservr!SOS_Scheduler::SuspendNonPreemptive+0xca
    04 00000000`0e14f190 00000000`008929cc sqlservr!SOS_Scheduler::Suspend+0x2d
    05 00000000`0e14f1c0 00000000`008ac8c3 sqlservr!EventInternal<Spinlock >::Wait+0x1a8
    06 00000000`0e14f210 00000000`009afb09 sqlservr!ResQueueBase::Dequeue+0x142
    07 00000000`0e14f2d0 00000000`0294f65b sqlservr!CheckpointLoop+0x200
    08 00000000`0e14f530 00000000`0089eba0 sqlservr!ckptproc+0x47
    09 00000000`0e14f5b0 00000000`0089efe2 sqlservr!SOS_Task::Param::Execute+0x12a
    0a 00000000`0e14f6c0 00000000`0089ee27 sqlservr!SOS_Scheduler::RunTask+0x96
    0b 00000000`0e14f720 00000000`00df307e sqlservr!SOS_Scheduler::ProcessTasks+0x128
    0c 00000000`0e14f790 00000000`00df3235 sqlservr!SchedulerManager::WorkerEntryPoint+0x2d2
    0d 00000000`0e14f870 00000000`00df2ab9 sqlservr!SystemThread::RunWorker+0xcc
    0e 00000000`0e14f8b0 00000000`00df38ca sqlservr!SystemThreadDispatcher::ProcessWorker+0x2db
    0f 00000000`0e14f960 00000000`74c637d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x173
    10 00000000`0e14fa00 00000000`74c63894 msvcr80!_callthreadstartex(void)+0x17 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 348]
    11 00000000`0e14fa30 00000000`76f059ed msvcr80!_threadstartex(void * ptd = 0x00000000`00000000)+0x84 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 326]
    12 00000000`0e14fa60 00000000`7703c541 kernel32!BaseThreadInitThunk+0xd
    13 00000000`0e14fa90 00000000`00000000 ntdll!RtlUserThreadStart+0x21

    34 Id: 468.964 Suspend: 0 Teb: 000007ff`fff68000 Unfrozen
    # Child-SP RetAddr Call Site
    00 00000000`0e4cecb8 00000000`76f62d50 ntdll!ZwSignalAndWaitForSingleObject+0xa
    01 00000000`0e4cecc0 00000000`0089526b kernel32!SignalObjectAndWait+0x110
    02 00000000`0e4ced70 00000000`00dea167 sqlservr!SOS_Scheduler::Switch+0x181
    03 00000000`0e4cf4c0 00000000`0089eba0 sqlservr!SOS_Scheduler::Idle+0xb6
    04 00000000`0e4cf4f0 00000000`0089efe2 sqlservr!SOS_Task::Param::Execute+0x12a
    05 00000000`0e4cf600 00000000`0089ee27 sqlservr!SOS_Scheduler::RunTask+0x96
    06 00000000`0e4cf660 00000000`00df307e sqlservr!SOS_Scheduler::ProcessTasks+0x128
    07 00000000`0e4cf6d0 00000000`00df3235 sqlservr!SchedulerManager::WorkerEntryPoint+0x2d2
    08 00000000`0e4cf7b0 00000000`00df2ab9 sqlservr!SystemThread::RunWorker+0xcc
    09 00000000`0e4cf7f0 00000000`00df38ca sqlservr!SystemThreadDispatcher::ProcessWorker+0x2db
    0a 00000000`0e4cf8a0 00000000`74c637d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x173
    0b 00000000`0e4cf940 00000000`74c63894 msvcr80!_callthreadstartex(void)+0x17 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 348]
    0c 00000000`0e4cf970 00000000`76f059ed msvcr80!_threadstartex(void * ptd = 0x00000000`00000000)+0x84 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 326]
    0d 00000000`0e4cf9a0 00000000`7703c541 kernel32!BaseThreadInitThunk+0xd
    0e 00000000`0e4cf9d0 00000000`00000000 ntdll!RtlUserThreadStart+0x21

    35 Id: 468.968 Suspend: 0 Teb: 000007ff`fff66000 Unfrozen
    # Child-SP RetAddr Call Site
    00 00000000`0e88f6f8 000007fe`fd2810dc ntdll!NtWaitForSingleObject+0xa
    01 00000000`0e88f700 00000000`00d1230c KERNELBASE!WaitForSingleObjectEx+0x9c
    02 00000000`0e88f7a0 00000000`0298021c sqlservr!FRunCM+0x442
    03 00000000`0e88f8c0 00000000`0089eba0 sqlservr!initCM+0x11c
    04 00000000`0e88f970 00000000`0089efe2 sqlservr!SOS_Task::Param::Execute+0x12a
    05 00000000`0e88fa80 00000000`0089ee27 sqlservr!SOS_Scheduler::RunTask+0x96
    06 00000000`0e88fae0 00000000`00df307e sqlservr!SOS_Scheduler::ProcessTasks+0x128
    07 00000000`0e88fb50 00000000`00df3235 sqlservr!SchedulerManager::WorkerEntryPoint+0x2d2
    08 00000000`0e88fc30 00000000`00df2ab9 sqlservr!SystemThread::RunWorker+0xcc
    09 00000000`0e88fc70 00000000`00df38ca sqlservr!SystemThreadDispatcher::ProcessWorker+0x2db
    0a 00000000`0e88fd20 00000000`74c637d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x173
    0b 00000000`0e88fdc0 00000000`74c63894 msvcr80!_callthreadstartex(void)+0x17 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 348]
    0c 00000000`0e88fdf0 00000000`76f059ed msvcr80!_threadstartex(void * ptd = 0x00000000`00000000)+0x84 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 326]
    0d 00000000`0e88fe20 00000000`7703c541 kernel32!BaseThreadInitThunk+0xd
    0e 00000000`0e88fe50 00000000`00000000 ntdll!RtlUserThreadStart+0x21

    36 Id: 468.96c Suspend: 0 Teb: 000007ff`fff64000 Unfrozen
    # Child-SP RetAddr Call Site
    00 00000000`0eb0ec78 00000000`76f62d50 ntdll!ZwSignalAndWaitForSingleObject+0xa
    01 00000000`0eb0ec80 00000000`0089526b kernel32!SignalObjectAndWait+0x110
    02 00000000`0eb0ed30 00000000`00dea167 sqlservr!SOS_Scheduler::Switch+0x181
    03 00000000`0eb0f480 00000000`0089eba0 sqlservr!SOS_Scheduler::Idle+0xb6
    04 00000000`0eb0f4b0 00000000`0089efe2 sqlservr!SOS_Task::Param::Execute+0x12a
    05 00000000`0eb0f5c0 00000000`0089ee27 sqlservr!SOS_Scheduler::RunTask+0x96
    06 00000000`0eb0f620 00000000`00df307e sqlservr!SOS_Scheduler::ProcessTasks+0x128
    07 00000000`0eb0f690 00000000`00df3235 sqlservr!SchedulerManager::WorkerEntryPoint+0x2d2
    08 00000000`0eb0f770 00000000`00df2ab9 sqlservr!SystemThread::RunWorker+0xcc
    09 00000000`0eb0f7b0 00000000`00df38ca sqlservr!SystemThreadDispatcher::ProcessWorker+0x2db
    0a 00000000`0eb0f860 00000000`74c637d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x173
    0b 00000000`0eb0f900 00000000`74c63894 msvcr80!_callthreadstartex(void)+0x17 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 348]
    0c 00000000`0eb0f930 00000000`76f059ed msvcr80!_threadstartex(void * ptd = 0x00000000`00000000)+0x84 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 326]
    0d 00000000`0eb0f960 00000000`7703c541 kernel32!BaseThreadInitThunk+0xd
    0e 00000000`0eb0f990 00000000`00000000 ntdll!RtlUserThreadStart+0x21

    37 Id: 468.974 Suspend: 0 Teb: 000007ff`fff60000 Unfrozen
    # Child-SP RetAddr Call Site
    00 00000000`0f14ecf8 00000000`76f62d50 ntdll!ZwSignalAndWaitForSingleObject+0xa
    01 00000000`0f14ed00 00000000`0089526b kernel32!SignalObjectAndWait+0x110
    02 00000000`0f14edb0 00000000`00dea167 sqlservr!SOS_Scheduler::Switch+0x181
    03 00000000`0f14f500 00000000`0089eba0 sqlservr!SOS_Scheduler::Idle+0xb6
    04 00000000`0f14f530 00000000`0089efe2 sqlservr!SOS_Task::Param::Execute+0x12a
    05 00000000`0f14f640 00000000`0089ee27 sqlservr!SOS_Scheduler::RunTask+0x96
    06 00000000`0f14f6a0 00000000`00df307e sqlservr!SOS_Scheduler::ProcessTasks+0x128
    07 00000000`0f14f710 00000000`00df3235 sqlservr!SchedulerManager::WorkerEntryPoint+0x2d2
    08 00000000`0f14f7f0 00000000`00df2ab9 sqlservr!SystemThread::RunWorker+0xcc
    09 00000000`0f14f830 00000000`00df38ca sqlservr!SystemThreadDispatcher::ProcessWorker+0x2db
    0a 00000000`0f14f8e0 00000000`74c637d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x173
    0b 00000000`0f14f980 00000000`74c63894 msvcr80!_callthreadstartex(void)+0x17 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 348]
    0c 00000000`0f14f9b0 00000000`76f059ed msvcr80!_threadstartex(void * ptd = 0x00000000`00000000)+0x84 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 326]
    0d 00000000`0f14f9e0 00000000`7703c541 kernel32!BaseThreadInitThunk+0xd
    0e 00000000`0f14fa10 00000000`00000000 ntdll!RtlUserThreadStart+0x21

    38 Id: 468.978 Suspend: 0 Teb: 000007ff`fff5e000 Unfrozen
    # Child-SP RetAddr Call Site
    00 00000000`0f35f1a8 000007fe`fd2810dc ntdll!NtWaitForSingleObject+0xa
    01 00000000`0f35f1b0 00000000`00893d3f KERNELBASE!WaitForSingleObjectEx+0x9c
    02 00000000`0f35f250 00000000`0089317a sqlservr!SOS_Scheduler::SwitchContext+0x26d
    03 00000000`0f35f6e0 00000000`008928a0 sqlservr!SOS_Scheduler::SuspendNonPreemptive+0xca
    04 00000000`0f35f720 00000000`0089ed59 sqlservr!SOS_Scheduler::Suspend+0x2d
    05 00000000`0f35f750 00000000`0089ede2 sqlservr!WorkDispatcher::DequeueTask+0x472
    06 00000000`0f35f7e0 00000000`00df307e sqlservr!SOS_Scheduler::ProcessTasks+0x76
    07 00000000`0f35f850 00000000`00df3235 sqlservr!SchedulerManager::WorkerEntryPoint+0x2d2
    08 00000000`0f35f930 00000000`00df2ab9 sqlservr!SystemThread::RunWorker+0xcc
    09 00000000`0f35f970 00000000`00df38ca sqlservr!SystemThreadDispatcher::ProcessWorker+0x2db
    0a 00000000`0f35fa20 00000000`74c637d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x173
    0b 00000000`0f35fac0 00000000`74c63894 msvcr80!_callthreadstartex(void)+0x17 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 348]
    0c 00000000`0f35faf0 00000000`76f059ed msvcr80!_threadstartex(void * ptd = 0x00000000`00000000)+0x84 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 326]
    0d 00000000`0f35fb20 00000000`7703c541 kernel32!BaseThreadInitThunk+0xd
    0e 00000000`0f35fb50 00000000`00000000 ntdll!RtlUserThreadStart+0x21

    39 Id: 468.97c Suspend: 0 Teb: 000007ff`fff5c000 Unfrozen
    # Child-SP RetAddr Call Site
    00 00000000`0f6aed38 00000000`76f62d50 ntdll!ZwSignalAndWaitForSingleObject+0xa
    01 00000000`0f6aed40 00000000`0089526b kernel32!SignalObjectAndWait+0x110
    02 00000000`0f6aedf0 00000000`00dea167 sqlservr!SOS_Scheduler::Switch+0x181
    03 00000000`0f6af540 00000000`0089eba0 sqlservr!SOS_Scheduler::Idle+0xb6
    04 00000000`0f6af570 00000000`0089efe2 sqlservr!SOS_Task::Param::Execute+0x12a
    05 00000000`0f6af680 00000000`0089ee27 sqlservr!SOS_Scheduler::RunTask+0x96
    06 00000000`0f6af6e0 00000000`00df307e sqlservr!SOS_Scheduler::ProcessTasks+0x128
    07 00000000`0f6af750 00000000`00df3235 sqlservr!SchedulerManager::WorkerEntryPoint+0x2d2
    08 00000000`0f6af830 00000000`00df2ab9 sqlservr!SystemThread::RunWorker+0xcc
    09 00000000`0f6af870 00000000`00df38ca sqlservr!SystemThreadDispatcher::ProcessWorker+0x2db
    0a 00000000`0f6af920 00000000`74c637d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x173
    0b 00000000`0f6af9c0 00000000`74c63894 msvcr80!_callthreadstartex(void)+0x17 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 348]
    0c 00000000`0f6af9f0 00000000`76f059ed msvcr80!_threadstartex(void * ptd = 0x00000000`00000000)+0x84 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 326]
    0d 00000000`0f6afa20 00000000`7703c541 kernel32!BaseThreadInitThunk+0xd
    0e 00000000`0f6afa50 00000000`00000000 ntdll!RtlUserThreadStart+0x21

    40 Id: 468.984 Suspend: 0 Teb: 000007ff`fff58000 Unfrozen
    # Child-SP RetAddr Call Site
    00 00000000`0fdcebf8 00000000`76f62d50 ntdll!ZwSignalAndWaitForSingleObject+0xa
    01 00000000`0fdcec00 00000000`0089526b kernel32!SignalObjectAndWait+0x110
    02 00000000`0fdcecb0 00000000`00dea167 sqlservr!SOS_Scheduler::Switch+0x181
    03 00000000`0fdcf400 00000000`0089eba0 sqlservr!SOS_Scheduler::Idle+0xb6
    04 00000000`0fdcf430 00000000`0089efe2 sqlservr!SOS_Task::Param::Execute+0x12a
    05 00000000`0fdcf540 00000000`0089ee27 sqlservr!SOS_Scheduler::RunTask+0x96
    06 00000000`0fdcf5a0 00000000`00df307e sqlservr!SOS_Scheduler::ProcessTasks+0x128
    07 00000000`0fdcf610 00000000`00df3235 sqlservr!SchedulerManager::WorkerEntryPoint+0x2d2
    08 00000000`0fdcf6f0 00000000`00df2ab9 sqlservr!SystemThread::RunWorker+0xcc
    09 00000000`0fdcf730 00000000`00df38ca sqlservr!SystemThreadDispatcher::ProcessWorker+0x2db
    0a 00000000`0fdcf7e0 00000000`74c637d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x173
    0b 00000000`0fdcf880 00000000`74c63894 msvcr80!_callthreadstartex(void)+0x17 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 348]
    0c 00000000`0fdcf8b0 00000000`76f059ed msvcr80!_threadstartex(void * ptd = 0x00000000`00000000)+0x84 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 326]
    0d 00000000`0fdcf8e0 00000000`7703c541 kernel32!BaseThreadInitThunk+0xd
    0e 00000000`0fdcf910 00000000`00000000 ntdll!RtlUserThreadStart+0x21

    41 Id: 468.990 Suspend: 0 Teb: 000007ff`fff54000 Unfrozen
    # Child-SP RetAddr Call Site
    00 00000000`1022f238 00000000`76f62d50 ntdll!ZwSignalAndWaitForSingleObject+0xa
    01 00000000`1022f240 00000000`0089526b kernel32!SignalObjectAndWait+0x110
    02 00000000`1022f2f0 00000000`00dea167 sqlservr!SOS_Scheduler::Switch+0x181
    03 00000000`1022fa40 00000000`0089eba0 sqlservr!SOS_Scheduler::Idle+0xb6
    04 00000000`1022fa70 00000000`0089efe2 sqlservr!SOS_Task::Param::Execute+0x12a
    05 00000000`1022fb80 00000000`0089ee27 sqlservr!SOS_Scheduler::RunTask+0x96
    06 00000000`1022fbe0 00000000`00df307e sqlservr!SOS_Scheduler::ProcessTasks+0x128
    07 00000000`1022fc50 00000000`00df3235 sqlservr!SchedulerManager::WorkerEntryPoint+0x2d2
    08 00000000`1022fd30 00000000`00df2ab9 sqlservr!SystemThread::RunWorker+0xcc
    09 00000000`1022fd70 00000000`00df38ca sqlservr!SystemThreadDispatcher::ProcessWorker+0x2db
    0a 00000000`1022fe20 00000000`74c637d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x173
    0b 00000000`1022fec0 00000000`74c63894 msvcr80!_callthreadstartex(void)+0x17 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 348]
    0c 00000000`1022fef0 00000000`76f059ed msvcr80!_threadstartex(void * ptd = 0x00000000`00000000)+0x84 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 326]
    0d 00000000`1022ff20 00000000`7703c541 kernel32!BaseThreadInitThunk+0xd
    0e 00000000`1022ff50 00000000`00000000 ntdll!RtlUserThreadStart+0x21

    42 Id: 468.9a0 Suspend: 0 Teb: 000007ff`fff50000 Unfrozen
    # Child-SP RetAddr Call Site
    00 00000000`108cec38 00000000`76f62d50 ntdll!ZwSignalAndWaitForSingleObject+0xa
    01 00000000`108cec40 00000000`0089526b kernel32!SignalObjectAndWait+0x110
    02 00000000`108cecf0 00000000`00dea167 sqlservr!SOS_Scheduler::Switch+0x181
    03 00000000`108cf440 00000000`0089eba0 sqlservr!SOS_Scheduler::Idle+0xb6
    04 00000000`108cf470 00000000`0089efe2 sqlservr!SOS_Task::Param::Execute+0x12a
    05 00000000`108cf580 00000000`0089ee27 sqlservr!SOS_Scheduler::RunTask+0x96
    06 00000000`108cf5e0 00000000`00df307e sqlservr!SOS_Scheduler::ProcessTasks+0x128
    07 00000000`108cf650 00000000`00df3235 sqlservr!SchedulerManager::WorkerEntryPoint+0x2d2
    08 00000000`108cf730 00000000`00df2ab9 sqlservr!SystemThread::RunWorker+0xcc
    09 00000000`108cf770 00000000`00df38ca sqlservr!SystemThreadDispatcher::ProcessWorker+0x2db
    0a 00000000`108cf820 00000000`74c637d7 sqlservr!SchedulerManager::ThreadEntryPoint+0x173
    0b 00000000`108cf8c0 00000000`74c63894 msvcr80!_callthreadstartex(void)+0x17 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 348]
    0c 00000000`108cf8f0 00000000`76f059ed msvcr80!_threadstartex(void * ptd = 0x00000000`00000000)+0x84 [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\threadex.c @ 326]
    0d 00000000`108cf920 00000000`7703c541 kernel32!BaseThreadInitThunk+0xd
    0e 00000000`108cf950 00000000`00000000 ntdll!RtlUserThreadStart+0x21

    43 Id: 468.9a4 Suspend: 0 Teb: 000007ff

  55. Zandra said

    With havvin so much content and articles do youu ever run into any problems of plagorism or copyright infringement?
    My site has a lott of exclusive content I’ve either authored myself or
    outsourced but it appears a lot of it is popping
    it up all over the web without my permission. Do you know any solutions to help protect
    against content from being ripped off? I’d certainly appreciate it.

  56. Daisy said

    Hey there! I’ve been reading your blog for a while now and finally got
    the bravery to go ahead and give you a shout out
    from Dallas Tx! Just wanted to mention keep up the fantastic work!

  57. Scott Davis said

    Hello Karthick,

    We have a Deadlock Schedulers dump. SQL standard, 64 bit, 11.0.3128.0

    Any help is appreciated.

    0:005> ~*kL 20

    0 Id: 196c.3710 Suspend: 0 Teb: 000007f7`63b2d000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`009ee668 000007fd`023010ea ntdll!ZwWaitForSingleObject+0xa
    00000000`009ee670 000007fd`03b05150 KERNELBASE!WaitForSingleObjectEx+0x92
    00000000`009ee710 000007fd`03b04f3c sechost!ScSendResponseReceiveControls+0x14d
    00000000`009ee850 000007fd`03b05369 sechost!ScDispatcherLoop+0x11c
    00000000`009ee950 000007f7`63d2400f sechost!StartServiceCtrlDispatcherW+0x54
    00000000`009ee990 000007f7`63d39076 sqlservr!wmain+0x2ff
    00000000`009efef0 000007fd`04e61832 sqlservr!XE_API::Finalize+0x25e
    00000000`009eff20 000007fd`053cd609 kernel32!BaseThreadInitThunk+0x1a
    00000000`009eff50 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    1 Id: 196c.35c8 Suspend: 0 Teb: 000007f7`63b23000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`020efc18 000007fd`053781c3 ntdll!ZwWaitForWorkViaWorkerFactory+0xa
    00000000`020efc20 000007fd`04e61832 ntdll!TppWorkerThread+0x275
    00000000`020efec0 000007fd`053cd609 kernel32!BaseThreadInitThunk+0x1a
    00000000`020efef0 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    2 Id: 196c.3248 Suspend: 0 Teb: 000007f7`639fc000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`1afeeb58 000007fd`02357632 ntdll!ZwSignalAndWaitForSingleObject+0xa
    00000000`1afeeb60 000007fc`eb8ce523 KERNELBASE!SignalObjectAndWait+0x82
    00000000`1afeec10 000007fc`eb8eaaf8 sqldk!SOS_Scheduler::Switch+0xb5
    00000000`1afef190 000007fc`eb8d3d80 sqldk!SOS_Scheduler::Idle+0x118
    00000000`1afef1c0 000007fc`eb8d3b64 sqldk!SOS_Task::Param::Execute+0x21e
    00000000`1afef7c0 000007fc`eb8d3967 sqldk!SOS_Scheduler::RunTask+0xa8
    00000000`1afef830 000007fc`eb8f2f0f sqldk!SOS_Scheduler::ProcessTasks+0x29a
    00000000`1afef8b0 000007fc`eb8f3750 sqldk!SchedulerManager::WorkerEntryPoint+0x261
    00000000`1afef950 000007fc`eb8f2c5d sqldk!SystemThread::RunWorker+0x8f
    00000000`1afef980 000007fc`eb8f3f88 sqldk!SystemThreadDispatcher::ProcessWorker+0x3c8
    00000000`1afefa30 000007fd`04e61832 sqldk!SchedulerManager::ThreadEntryPoint+0x236
    00000000`1afefad0 000007fd`053cd609 kernel32!BaseThreadInitThunk+0x1a
    00000000`1afefb00 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    3 Id: 196c.2728 Suspend: 0 Teb: 000007f7`639fa000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`1b1eea08 000007fd`023012c6 ntdll!ZwWaitForMultipleObjects+0xa
    00000000`1b1eea10 000007fd`04e61282 KERNELBASE!WaitForMultipleObjectsEx+0xe5
    00000000`1b1eecf0 000007fc`eb8ee07c kernel32!WaitForMultipleObjects+0x12
    00000000`1b1eed30 000007fc`eb8ee83f sqldk!XE_DispatcherQueue::Dequeue+0x131
    00000000`1b1eee10 000007fc`eba05c68 sqldk!Dispatcher::Run+0x73
    00000000`1b1eeec0 000007fc`ecee2096 sqldk!XE_SessionSrv::DispatcherEntryPointWithContext+0x148
    00000000`1b1eef60 000007fc`eba05964 sqllang!XESQLSetupThreadContext+0xe6
    00000000`1b1ef020 000007fc`eba0778c sqldk!DispatcherEntryPoint+0x64
    00000000`1b1ef060 000007fc`eb8d3d80 sqldk!SOS_DispatcherPool::RunDispatcher+0x1c
    00000000`1b1ef090 000007fc`eb8d3b64 sqldk!SOS_Task::Param::Execute+0x21e
    00000000`1b1ef690 000007fc`eb8d3967 sqldk!SOS_Scheduler::RunTask+0xa8
    00000000`1b1ef700 000007fc`eb8f2f0f sqldk!SOS_Scheduler::ProcessTasks+0x29a
    00000000`1b1ef780 000007fc`eb8f3750 sqldk!SchedulerManager::WorkerEntryPoint+0x261
    00000000`1b1ef820 000007fc`eb8f2c5d sqldk!SystemThread::RunWorker+0x8f
    00000000`1b1ef850 000007fc`eb8f3f88 sqldk!SystemThreadDispatcher::ProcessWorker+0x3c8
    00000000`1b1ef900 000007fd`04e61832 sqldk!SchedulerManager::ThreadEntryPoint+0x236
    00000000`1b1ef9a0 000007fd`053cd609 kernel32!BaseThreadInitThunk+0x1a
    00000000`1b1ef9d0 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    4 Id: 196c.2e74 Suspend: 0 Teb: 000007f7`639f8000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`1b3eed08 000007fd`02357632 ntdll!ZwSignalAndWaitForSingleObject+0xa
    00000000`1b3eed10 000007fc`eb8ce523 KERNELBASE!SignalObjectAndWait+0x82
    00000000`1b3eedc0 000007fc`eb8eaaf8 sqldk!SOS_Scheduler::Switch+0xb5
    00000000`1b3ef340 000007fc`eb8d3d80 sqldk!SOS_Scheduler::Idle+0x118
    00000000`1b3ef370 000007fc`eb8d3b64 sqldk!SOS_Task::Param::Execute+0x21e
    00000000`1b3ef970 000007fc`eb8d3967 sqldk!SOS_Scheduler::RunTask+0xa8
    00000000`1b3ef9e0 000007fc`eb8f2f0f sqldk!SOS_Scheduler::ProcessTasks+0x29a
    00000000`1b3efa60 000007fc`eb8f3750 sqldk!SchedulerManager::WorkerEntryPoint+0x261
    00000000`1b3efb00 000007fc`eb8f2c5d sqldk!SystemThread::RunWorker+0x8f
    00000000`1b3efb30 000007fc`eb8f3f88 sqldk!SystemThreadDispatcher::ProcessWorker+0x3c8
    00000000`1b3efbe0 000007fd`04e61832 sqldk!SchedulerManager::ThreadEntryPoint+0x236
    00000000`1b3efc80 000007fd`053cd609 kernel32!BaseThreadInitThunk+0x1a
    00000000`1b3efcb0 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    # 5 Id: 196c.1acc Suspend: 0 Teb: 000007f7`639f6000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`1b5ecc08 000007fd`023010ea ntdll!ZwWaitForSingleObject+0xa
    00000000`1b5ecc10 000007f7`63d3ee2e KERNELBASE!WaitForSingleObjectEx+0x92
    00000000`1b5eccb0 000007f7`63d3f304 sqlservr!CDmpDump::DumpInternal+0x20e
    00000000`1b5ecd50 000007fc`ed793434 sqlservr!CDmpDump::Dump+0x24
    00000000`1b5ecd90 000007fc`ed793e56 sqllang!SQLDumperLibraryInvoke+0x2e4
    00000000`1b5ed030 000007fc`ed75ab8b sqllang!CImageHelper::DoMiniDump+0x426
    00000000`1b5ed220 000007f7`63d33374 sqllang!stackTrace+0xbdb
    00000000`1b5eec60 000007fc`eb97d082 sqlservr!SQL_SOSDeadlockSchedulersCallback+0xc4
    00000000`1b5eecd0 000007fc`eb91765c sqldk!SOS_OS::ExecuteDeadlockSchedulerCallbacks+0xf2
    00000000`1b5eef90 000007fc`eb8db1d4 sqldk!SchedulerMonitor::CheckSchedulers+0xa7c
    00000000`1b5ef420 000007fc`eb9b8619 sqldk!SchedulerMonitor::Run+0x10b
    00000000`1b5ef560 000007fc`eb8d3d80 sqldk!SchedulerMonitor::EntryPoint+0x9
    00000000`1b5ef590 000007fc`eb8d3b64 sqldk!SOS_Task::Param::Execute+0x21e
    00000000`1b5efb90 000007fc`eb8d3967 sqldk!SOS_Scheduler::RunTask+0xa8
    00000000`1b5efc00 000007fc`eb8f2f0f sqldk!SOS_Scheduler::ProcessTasks+0x29a
    00000000`1b5efc80 000007fc`eb8f3750 sqldk!SchedulerManager::WorkerEntryPoint+0x261
    00000000`1b5efd20 000007fc`eb8f2c5d sqldk!SystemThread::RunWorker+0x8f
    00000000`1b5efd50 000007fc`eb8f3f88 sqldk!SystemThreadDispatcher::ProcessWorker+0x3c8
    00000000`1b5efe00 000007fd`04e61832 sqldk!SchedulerManager::ThreadEntryPoint+0x236
    00000000`1b5efea0 000007fd`053cd609 kernel32!BaseThreadInitThunk+0x1a
    00000000`1b5efed0 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    6 Id: 196c.230 Suspend: 0 Teb: 000007f7`639f4000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`1b7eebf8 000007fd`02357632 ntdll!ZwSignalAndWaitForSingleObject+0xa
    00000000`1b7eec00 000007fc`eb8ce523 KERNELBASE!SignalObjectAndWait+0x82
    00000000`1b7eecb0 000007fc`eb8eaaf8 sqldk!SOS_Scheduler::Switch+0xb5
    00000000`1b7ef230 000007fc`eb8d3d80 sqldk!SOS_Scheduler::Idle+0x118
    00000000`1b7ef260 000007fc`eb8d3b64 sqldk!SOS_Task::Param::Execute+0x21e
    00000000`1b7ef860 000007fc`eb8d3967 sqldk!SOS_Scheduler::RunTask+0xa8
    00000000`1b7ef8d0 000007fc`eb8f2f0f sqldk!SOS_Scheduler::ProcessTasks+0x29a
    00000000`1b7ef950 000007fc`eb8f3750 sqldk!SchedulerManager::WorkerEntryPoint+0x261
    00000000`1b7ef9f0 000007fc`eb8f2c5d sqldk!SystemThread::RunWorker+0x8f
    00000000`1b7efa20 000007fc`eb8f3f88 sqldk!SystemThreadDispatcher::ProcessWorker+0x3c8
    00000000`1b7efad0 000007fd`04e61832 sqldk!SchedulerManager::ThreadEntryPoint+0x236
    00000000`1b7efb70 000007fd`053cd609 kernel32!BaseThreadInitThunk+0x1a
    00000000`1b7efba0 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    7 Id: 196c.16f4 Suspend: 0 Teb: 000007f7`639f0000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`1bbeed68 000007fd`02357632 ntdll!ZwSignalAndWaitForSingleObject+0xa
    00000000`1bbeed70 000007fc`eb8ce523 KERNELBASE!SignalObjectAndWait+0x82
    00000000`1bbeee20 000007fc`eb8eaaf8 sqldk!SOS_Scheduler::Switch+0xb5
    00000000`1bbef3a0 000007fc`eb8d3d80 sqldk!SOS_Scheduler::Idle+0x118
    00000000`1bbef3d0 000007fc`eb8d3b64 sqldk!SOS_Task::Param::Execute+0x21e
    00000000`1bbef9d0 000007fc`eb8d3967 sqldk!SOS_Scheduler::RunTask+0xa8
    00000000`1bbefa40 000007fc`eb8f2f0f sqldk!SOS_Scheduler::ProcessTasks+0x29a
    00000000`1bbefac0 000007fc`eb8f3750 sqldk!SchedulerManager::WorkerEntryPoint+0x261
    00000000`1bbefb60 000007fc`eb8f2c5d sqldk!SystemThread::RunWorker+0x8f
    00000000`1bbefb90 000007fc`eb8f3f88 sqldk!SystemThreadDispatcher::ProcessWorker+0x3c8
    00000000`1bbefc40 000007fd`04e61832 sqldk!SchedulerManager::ThreadEntryPoint+0x236
    00000000`1bbefce0 000007fd`053cd609 kernel32!BaseThreadInitThunk+0x1a
    00000000`1bbefd10 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    8 Id: 196c.1f04 Suspend: 0 Teb: 000007f7`639ee000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`1bdeea88 000007fd`02357632 ntdll!ZwSignalAndWaitForSingleObject+0xa
    00000000`1bdeea90 000007fc`eb8ce523 KERNELBASE!SignalObjectAndWait+0x82
    00000000`1bdeeb40 000007fc`eb8cba29 sqldk!SOS_Scheduler::Switch+0xb5
    00000000`1bdef0c0 000007fc`eb8cdd74 sqldk!SOS_Scheduler::SuspendNonPreemptive+0xd2
    00000000`1bdef100 000007fc`eb8cdf1f sqldk!EventInternal::Wait+0x2bc
    00000000`1bdef150 000007fc`ee7f1d2c sqldk!ResQueueBase::Dequeue+0x1cf
    00000000`1bdef220 000007fc`ee7f36ba sqlmin!CheckpointHelper+0x50
    00000000`1bdef2c0 000007fc`ed3bb713 sqlmin!CheckpointLoopWorker+0xda
    00000000`1bdef3b0 000007fc`ef893823 sqllang!RegisterCheckPtWorker+0x133
    00000000`1bdef460 000007fc`ef893935 sqlmin!CheckpointLoop+0xd3
    00000000`1bdef520 000007fc`eb8d3d80 sqlmin!CheckpointThread+0x55
    00000000`1bdef590 000007fc`eb8d3b64 sqldk!SOS_Task::Param::Execute+0x21e
    00000000`1bdefb90 000007fc`eb8d3967 sqldk!SOS_Scheduler::RunTask+0xa8
    00000000`1bdefc00 000007fc`eb8f2f0f sqldk!SOS_Scheduler::ProcessTasks+0x29a
    00000000`1bdefc80 000007fc`eb8f3750 sqldk!SchedulerManager::WorkerEntryPoint+0x261
    00000000`1bdefd20 000007fc`eb8f2c5d sqldk!SystemThread::RunWorker+0x8f
    00000000`1bdefd50 000007fc`eb8f3f88 sqldk!SystemThreadDispatcher::ProcessWorker+0x3c8
    00000000`1bdefe00 000007fd`04e61832 sqldk!SchedulerManager::ThreadEntryPoint+0x236
    00000000`1bdefea0 000007fd`053cd609 kernel32!BaseThreadInitThunk+0x1a
    00000000`1bdefed0 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    9 Id: 196c.24d0 Suspend: 0 Teb: 000007f7`639ec000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`1bfeefd8 000007fd`02357632 ntdll!ZwSignalAndWaitForSingleObject+0xa
    00000000`1bfeefe0 000007fc`eb8ce523 KERNELBASE!SignalObjectAndWait+0x82
    00000000`1bfef090 000007fc`eb8eaaf8 sqldk!SOS_Scheduler::Switch+0xb5
    00000000`1bfef610 000007fc`eb8d3d80 sqldk!SOS_Scheduler::Idle+0x118
    00000000`1bfef640 000007fc`eb8d3b64 sqldk!SOS_Task::Param::Execute+0x21e
    00000000`1bfefc40 000007fc`eb8d3967 sqldk!SOS_Scheduler::RunTask+0xa8
    00000000`1bfefcb0 000007fc`eb8f2f0f sqldk!SOS_Scheduler::ProcessTasks+0x29a
    00000000`1bfefd30 000007fc`eb8f3750 sqldk!SchedulerManager::WorkerEntryPoint+0x261
    00000000`1bfefdd0 000007fc`eb8f2c5d sqldk!SystemThread::RunWorker+0x8f
    00000000`1bfefe00 000007fc`eb8f3f88 sqldk!SystemThreadDispatcher::ProcessWorker+0x3c8
    00000000`1bfefeb0 000007fd`04e61832 sqldk!SchedulerManager::ThreadEntryPoint+0x236
    00000000`1bfeff50 000007fd`053cd609 kernel32!BaseThreadInitThunk+0x1a
    00000000`1bfeff80 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    10 Id: 196c.1708 Suspend: 0 Teb: 000007f7`639ea000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`1c1eebd8 000007fd`023010ea ntdll!ZwWaitForSingleObject+0xa
    00000000`1c1eebe0 000007fc`eb8cb073 KERNELBASE!WaitForSingleObjectEx+0x92
    00000000`1c1eec80 000007fc`eb8cba29 sqldk!SOS_Scheduler::SwitchContext+0x302
    00000000`1c1eef20 000007fc`eb8cdd74 sqldk!SOS_Scheduler::SuspendNonPreemptive+0xd2
    00000000`1c1eef60 000007fc`eb8cdf1f sqldk!EventInternal::Wait+0x2bc
    00000000`1c1eefb0 000007fc`ef2e2326 sqldk!ResQueueBase::Dequeue+0x1cf
    00000000`1c1ef080 000007fc`eb8d3d80 sqlmin!systemTaskThread+0x216
    00000000`1c1ef650 000007fc`eb8d3b64 sqldk!SOS_Task::Param::Execute+0x21e
    00000000`1c1efc50 000007fc`eb8d3967 sqldk!SOS_Scheduler::RunTask+0xa8
    00000000`1c1efcc0 000007fc`eb8f2f0f sqldk!SOS_Scheduler::ProcessTasks+0x29a
    00000000`1c1efd40 000007fc`eb8f3750 sqldk!SchedulerManager::WorkerEntryPoint+0x261
    00000000`1c1efde0 000007fc`eb8f2c5d sqldk!SystemThread::RunWorker+0x8f
    00000000`1c1efe10 000007fc`eb8f3f88 sqldk!SystemThreadDispatcher::ProcessWorker+0x3c8
    00000000`1c1efec0 000007fd`04e61832 sqldk!SchedulerManager::ThreadEntryPoint+0x236
    00000000`1c1eff60 000007fd`053cd609 kernel32!BaseThreadInitThunk+0x1a
    00000000`1c1eff90 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    11 Id: 196c.1ca0 Suspend: 0 Teb: 000007f7`639e8000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`1c3eeaa8 000007fd`02357632 ntdll!ZwSignalAndWaitForSingleObject+0xa
    00000000`1c3eeab0 000007fc`eb8ce523 KERNELBASE!SignalObjectAndWait+0x82
    00000000`1c3eeb60 000007fc`eb8eaaf8 sqldk!SOS_Scheduler::Switch+0xb5
    00000000`1c3ef0e0 000007fc`eb8d3d80 sqldk!SOS_Scheduler::Idle+0x118
    00000000`1c3ef110 000007fc`eb8d3b64 sqldk!SOS_Task::Param::Execute+0x21e
    00000000`1c3ef710 000007fc`eb8d3967 sqldk!SOS_Scheduler::RunTask+0xa8
    00000000`1c3ef780 000007fc`eb8f2f0f sqldk!SOS_Scheduler::ProcessTasks+0x29a
    00000000`1c3ef800 000007fc`eb8f3750 sqldk!SchedulerManager::WorkerEntryPoint+0x261
    00000000`1c3ef8a0 000007fc`eb8f2c5d sqldk!SystemThread::RunWorker+0x8f
    00000000`1c3ef8d0 000007fc`eb8f3f88 sqldk!SystemThreadDispatcher::ProcessWorker+0x3c8
    00000000`1c3ef980 000007fd`04e61832 sqldk!SchedulerManager::ThreadEntryPoint+0x236
    00000000`1c3efa20 000007fd`053cd609 kernel32!BaseThreadInitThunk+0x1a
    00000000`1c3efa50 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    12 Id: 196c.2368 Suspend: 0 Teb: 000007f7`639e6000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`1c6edb28 000007fd`02357632 ntdll!ZwSignalAndWaitForSingleObject+0xa
    00000000`1c6edb30 000007fc`eb8ce523 KERNELBASE!SignalObjectAndWait+0x82
    00000000`1c6edbe0 000007fc`eb8cba29 sqldk!SOS_Scheduler::Switch+0xb5
    00000000`1c6ee160 000007fc`ee665946 sqldk!SOS_Scheduler::SuspendNonPreemptive+0xd2
    00000000`1c6ee1a0 000007fc`ee66ba20 sqlmin!EventInternal::Wait+0x1ee
    00000000`1c6ee1f0 000007fc`ef6c0b94 sqlmin!BPool::LazyWriter+0x6f9
    00000000`1c6eef20 000007fc`eb8d3d80 sqlmin!lazywriter+0x204
    00000000`1c6ef3a0 000007fc`eb8d3b64 sqldk!SOS_Task::Param::Execute+0x21e
    00000000`1c6ef9a0 000007fc`eb8d3967 sqldk!SOS_Scheduler::RunTask+0xa8
    00000000`1c6efa10 000007fc`eb8f2f0f sqldk!SOS_Scheduler::ProcessTasks+0x29a
    00000000`1c6efa90 000007fc`eb8f3750 sqldk!SchedulerManager::WorkerEntryPoint+0x261
    00000000`1c6efb30 000007fc`eb8f2c5d sqldk!SystemThread::RunWorker+0x8f
    00000000`1c6efb60 000007fc`eb8f3f88 sqldk!SystemThreadDispatcher::ProcessWorker+0x3c8
    00000000`1c6efc10 000007fd`04e61832 sqldk!SchedulerManager::ThreadEntryPoint+0x236
    00000000`1c6efcb0 000007fd`053cd609 kernel32!BaseThreadInitThunk+0x1a
    00000000`1c6efce0 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    13 Id: 196c.3518 Suspend: 0 Teb: 000007f7`639e4000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`1c8eed78 000007fd`02357632 ntdll!ZwSignalAndWaitForSingleObject+0xa
    00000000`1c8eed80 000007fc`eb8ce523 KERNELBASE!SignalObjectAndWait+0x82
    00000000`1c8eee30 000007fc`eb8eaaf8 sqldk!SOS_Scheduler::Switch+0xb5
    00000000`1c8ef3b0 000007fc`eb8d3d80 sqldk!SOS_Scheduler::Idle+0x118
    00000000`1c8ef3e0 000007fc`eb8d3b64 sqldk!SOS_Task::Param::Execute+0x21e
    00000000`1c8ef9e0 000007fc`eb8d3967 sqldk!SOS_Scheduler::RunTask+0xa8
    00000000`1c8efa50 000007fc`eb8f2f0f sqldk!SOS_Scheduler::ProcessTasks+0x29a
    00000000`1c8efad0 000007fc`eb8f3750 sqldk!SchedulerManager::WorkerEntryPoint+0x261
    00000000`1c8efb70 000007fc`eb8f2c5d sqldk!SystemThread::RunWorker+0x8f
    00000000`1c8efba0 000007fc`eb8f3f88 sqldk!SystemThreadDispatcher::ProcessWorker+0x3c8
    00000000`1c8efc50 000007fd`04e61832 sqldk!SchedulerManager::ThreadEntryPoint+0x236
    00000000`1c8efcf0 000007fd`053cd609 kernel32!BaseThreadInitThunk+0x1a
    00000000`1c8efd20 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    14 Id: 196c.31c0 Suspend: 0 Teb: 000007f7`639e2000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`1caee8a8 000007fd`023010ea ntdll!ZwWaitForSingleObject+0xa
    00000000`1caee8b0 000007fc`eb8db8f6 KERNELBASE!WaitForSingleObjectEx+0x92
    00000000`1caee950 000007fc`eb8db874 sqldk!SystemThread::Suspend+0x26
    00000000`1caee980 000007fc`eb8db6d2 sqldk!SOS_Scheduler::SuspendPreemptive+0x215
    00000000`1caeeae0 000007fc`eb8cdf1f sqldk!EventInternal::Wait+0x29e
    00000000`1caeeb30 000007fc`ee66f97d sqldk!ResQueueBase::Dequeue+0x1cf
    00000000`1caeec00 000007fc`ee670b12 sqlmin!DeadlockMonitor::WorkLoop+0x1be
    00000000`1caeed20 000007fc`ef7e2d14 sqlmin!lockMonitor+0x277
    00000000`1caeeeb0 000007fc`eb8d3d80 sqlmin!lockMonitorThread+0x94
    00000000`1caef180 000007fc`eb8d3b64 sqldk!SOS_Task::Param::Execute+0x21e
    00000000`1caef780 000007fc`eb8d3967 sqldk!SOS_Scheduler::RunTask+0xa8
    00000000`1caef7f0 000007fc`eb8f2f0f sqldk!SOS_Scheduler::ProcessTasks+0x29a
    00000000`1caef870 000007fc`eb8f3750 sqldk!SchedulerManager::WorkerEntryPoint+0x261
    00000000`1caef910 000007fc`eb8f2c5d sqldk!SystemThread::RunWorker+0x8f
    00000000`1caef940 000007fc`eb8f3f88 sqldk!SystemThreadDispatcher::ProcessWorker+0x3c8
    00000000`1caef9f0 000007fd`04e61832 sqldk!SchedulerManager::ThreadEntryPoint+0x236
    00000000`1caefa90 000007fd`053cd609 kernel32!BaseThreadInitThunk+0x1a
    00000000`1caefac0 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    15 Id: 196c.3504 Suspend: 0 Teb: 000007f7`639e0000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`1ccee7f8 000007fd`02357632 ntdll!ZwSignalAndWaitForSingleObject+0xa
    00000000`1ccee800 000007fc`eb8ce523 KERNELBASE!SignalObjectAndWait+0x82
    00000000`1ccee8b0 000007fc`eb8eaaf8 sqldk!SOS_Scheduler::Switch+0xb5
    00000000`1cceee30 000007fc`eb8d3d80 sqldk!SOS_Scheduler::Idle+0x118
    00000000`1cceee60 000007fc`eb8d3b64 sqldk!SOS_Task::Param::Execute+0x21e
    00000000`1ccef460 000007fc`eb8d3967 sqldk!SOS_Scheduler::RunTask+0xa8
    00000000`1ccef4d0 000007fc`eb8f2f0f sqldk!SOS_Scheduler::ProcessTasks+0x29a
    00000000`1ccef550 000007fc`eb8f3750 sqldk!SchedulerManager::WorkerEntryPoint+0x261
    00000000`1ccef5f0 000007fc`eb8f2c5d sqldk!SystemThread::RunWorker+0x8f
    00000000`1ccef620 000007fc`eb8f3f88 sqldk!SystemThreadDispatcher::ProcessWorker+0x3c8
    00000000`1ccef6d0 000007fd`04e61832 sqldk!SchedulerManager::ThreadEntryPoint+0x236
    00000000`1ccef770 000007fd`053cd609 kernel32!BaseThreadInitThunk+0x1a
    00000000`1ccef7a0 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    16 Id: 196c.af8 Suspend: 0 Teb: 000007f7`639de000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`1ceeed18 000007fd`023036ad ntdll!ZwRemoveIoCompletion+0xa
    00000000`1ceeed20 000007fd`04e615a2 KERNELBASE!GetQueuedCompletionStatus+0x39
    00000000`1ceeed80 000007fc`eb8e2bdc kernel32!GetQueuedCompletionStatusStub+0x12
    00000000`1ceeedc0 000007fc`eb8d3d80 sqldk!SOS_Node::ListenOnIOCompletionPort+0x105
    00000000`1ceeef90 000007fc`eb8d3b64 sqldk!SOS_Task::Param::Execute+0x21e
    00000000`1ceef590 000007fc`eb8d3967 sqldk!SOS_Scheduler::RunTask+0xa8
    00000000`1ceef600 000007fc`eb8f2f0f sqldk!SOS_Scheduler::ProcessTasks+0x29a
    00000000`1ceef680 000007fc`eb8f3750 sqldk!SchedulerManager::WorkerEntryPoint+0x261
    00000000`1ceef720 000007fc`eb8f2c5d sqldk!SystemThread::RunWorker+0x8f
    00000000`1ceef750 000007fc`eb8f3f88 sqldk!SystemThreadDispatcher::ProcessWorker+0x3c8
    00000000`1ceef800 000007fd`04e61832 sqldk!SchedulerManager::ThreadEntryPoint+0x236
    00000000`1ceef8a0 000007fd`053cd609 kernel32!BaseThreadInitThunk+0x1a
    00000000`1ceef8d0 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    17 Id: 196c.301c Suspend: 0 Teb: 000007f7`639dc000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`1d0eed98 000007fd`023010ea ntdll!ZwWaitForSingleObject+0xa
    00000000`1d0eeda0 000007fc`eb8db8f6 KERNELBASE!WaitForSingleObjectEx+0x92
    00000000`1d0eee40 000007fc`eb8db874 sqldk!SystemThread::Suspend+0x26
    00000000`1d0eee70 000007fc`eb8db6d2 sqldk!SOS_Scheduler::SuspendPreemptive+0x215
    00000000`1d0eefd0 000007fc`eb8dc473 sqldk!EventInternal::Wait+0x29e
    00000000`1d0ef020 000007fc`eb8dbffd sqldk!SOSHost_EventAuto::Wait+0x33
    00000000`1d0ef080 000007fc`eba0a298 sqldk!XE_Timer::Run+0x9c
    00000000`1d0ef0f0 000007fc`ecee2096 sqldk!XE_Timer::EntryPointWithContext+0x148
    00000000`1d0ef190 000007fc`eba0a128 sqllang!XESQLSetupThreadContext+0xe6
    00000000`1d0ef250 000007fc`eb8d3d80 sqldk!XE_Timer::EntryPoint+0x28
    00000000`1d0ef280 000007fc`eb8d3b64 sqldk!SOS_Task::Param::Execute+0x21e
    00000000`1d0ef880 000007fc`eb8d3967 sqldk!SOS_Scheduler::RunTask+0xa8
    00000000`1d0ef8f0 000007fc`eb8f2f0f sqldk!SOS_Scheduler::ProcessTasks+0x29a
    00000000`1d0ef970 000007fc`eb8f3750 sqldk!SchedulerManager::WorkerEntryPoint+0x261
    00000000`1d0efa10 000007fc`eb8f2c5d sqldk!SystemThread::RunWorker+0x8f
    00000000`1d0efa40 000007fc`eb8f3f88 sqldk!SystemThreadDispatcher::ProcessWorker+0x3c8
    00000000`1d0efaf0 000007fd`04e61832 sqldk!SchedulerManager::ThreadEntryPoint+0x236
    00000000`1d0efb90 000007fd`053cd609 kernel32!BaseThreadInitThunk+0x1a
    00000000`1d0efbc0 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    18 Id: 196c.750 Suspend: 0 Teb: 000007f7`639da000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`1d2eeca8 000007fd`023012c6 ntdll!ZwWaitForMultipleObjects+0xa
    00000000`1d2eecb0 000007fd`04e61282 KERNELBASE!WaitForMultipleObjectsEx+0xe5
    00000000`1d2eef90 000007fc`eb8dceb0 kernel32!WaitForMultipleObjects+0x12
    00000000`1d2eefd0 000007fc`eb994d43 sqldk!ResourceMonitor::CheckIndicators+0x234
    00000000`1d2ef0a0 000007f7`63d323ae sqldk!ResourceMonitor::ResourceMonitorTask+0x223
    00000000`1d2ef250 000007fc`eb8d3d80 sqlservr!SetupResourceMonitorTaskContext+0x105
    00000000`1d2ef570 000007fc`eb8d3b64 sqldk!SOS_Task::Param::Execute+0x21e
    00000000`1d2efb70 000007fc`eb8d3967 sqldk!SOS_Scheduler::RunTask+0xa8
    00000000`1d2efbe0 000007fc`eb8f2f0f sqldk!SOS_Scheduler::ProcessTasks+0x29a
    00000000`1d2efc60 000007fc`eb8f3750 sqldk!SchedulerManager::WorkerEntryPoint+0x261
    00000000`1d2efd00 000007fc`eb8f2c5d sqldk!SystemThread::RunWorker+0x8f
    00000000`1d2efd30 000007fc`eb8f3f88 sqldk!SystemThreadDispatcher::ProcessWorker+0x3c8
    00000000`1d2efde0 000007fd`04e61832 sqldk!SchedulerManager::ThreadEntryPoint+0x236
    00000000`1d2efe80 000007fd`053cd609 kernel32!BaseThreadInitThunk+0x1a
    00000000`1d2efeb0 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    19 Id: 196c.1f70 Suspend: 0 Teb: 000007f7`639d8000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`256fe128 000007fd`023010ea ntdll!ZwWaitForSingleObject+0xa
    00000000`256fe130 000007fc`ed334d91 KERNELBASE!WaitForSingleObjectEx+0x92
    00000000`256fe1d0 000007fc`ed33530f sqllang!FRunCommunicationsManager+0xf1
    00000000`256fe3a0 000007fc`eb8d3d80 sqllang!CommunicationsManager+0x3bf
    00000000`256ff600 000007fc`eb8d3b64 sqldk!SOS_Task::Param::Execute+0x21e
    00000000`256ffc00 000007fc`eb8d3967 sqldk!SOS_Scheduler::RunTask+0xa8
    00000000`256ffc70 000007fc`eb8f2f0f sqldk!SOS_Scheduler::ProcessTasks+0x29a
    00000000`256ffcf0 000007fc`eb8f3750 sqldk!SchedulerManager::WorkerEntryPoint+0x261
    00000000`256ffd90 000007fc`eb8f2c5d sqldk!SystemThread::RunWorker+0x8f
    00000000`256ffdc0 000007fc`eb8f3f88 sqldk!SystemThreadDispatcher::ProcessWorker+0x3c8
    00000000`256ffe70 000007fd`04e61832 sqldk!SchedulerManager::ThreadEntryPoint+0x236
    00000000`256fff10 000007fd`053cd609 kernel32!BaseThreadInitThunk+0x1a
    00000000`256fff40 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    20 Id: 196c.1818 Suspend: 0 Teb: 000007f7`639d6000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`258fcf28 000007fd`023010ea ntdll!ZwWaitForSingleObject+0xa
    00000000`258fcf30 000007fc`eb8cb073 KERNELBASE!WaitForSingleObjectEx+0x92
    00000000`258fcfd0 000007fc`eb8cba29 sqldk!SOS_Scheduler::SwitchContext+0x302
    00000000`258fd270 000007fc`eb8cdd74 sqldk!SOS_Scheduler::SuspendNonPreemptive+0xd2
    00000000`258fd2b0 000007fc`eb8cdf1f sqldk!EventInternal::Wait+0x2bc
    00000000`258fd300 000007fc`ee6654a1 sqldk!ResQueueBase::Dequeue+0x1cf
    00000000`258fd3d0 000007fc`eb8d3d80 sqlmin!SQLServerLogMgr::LogWriter+0x1c0
    00000000`258ff0c0 000007fc`eb8d3b64 sqldk!SOS_Task::Param::Execute+0x21e
    00000000`258ff6c0 000007fc`eb8d3967 sqldk!SOS_Scheduler::RunTask+0xa8
    00000000`258ff730 000007fc`eb8f2f0f sqldk!SOS_Scheduler::ProcessTasks+0x29a
    00000000`258ff7b0 000007fc`eb8f3750 sqldk!SchedulerManager::WorkerEntryPoint+0x261
    00000000`258ff850 000007fc`eb8f2c5d sqldk!SystemThread::RunWorker+0x8f
    00000000`258ff880 000007fc`eb8f3f88 sqldk!SystemThreadDispatcher::ProcessWorker+0x3c8
    00000000`258ff930 000007fd`04e61832 sqldk!SchedulerManager::ThreadEntryPoint+0x236
    00000000`258ff9d0 000007fd`053cd609 kernel32!BaseThreadInitThunk+0x1a
    00000000`258ffa00 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    21 Id: 196c.424 Suspend: 0 Teb: 000007f7`639d2000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`25cfea08 000007fd`02357632 ntdll!ZwSignalAndWaitForSingleObject+0xa
    00000000`25cfea10 000007fc`eb8ce523 KERNELBASE!SignalObjectAndWait+0x82
    00000000`25cfeac0 000007fc`eb8eaaf8 sqldk!SOS_Scheduler::Switch+0xb5
    00000000`25cff040 000007fc`eb8d3d80 sqldk!SOS_Scheduler::Idle+0x118
    00000000`25cff070 000007fc`eb8d3b64 sqldk!SOS_Task::Param::Execute+0x21e
    00000000`25cff670 000007fc`eb8d3967 sqldk!SOS_Scheduler::RunTask+0xa8
    00000000`25cff6e0 000007fc`eb8f2f0f sqldk!SOS_Scheduler::ProcessTasks+0x29a
    00000000`25cff760 000007fc`eb8f3750 sqldk!SchedulerManager::WorkerEntryPoint+0x261
    00000000`25cff800 000007fc`eb8f2c5d sqldk!SystemThread::RunWorker+0x8f
    00000000`25cff830 000007fc`eb8f3f88 sqldk!SystemThreadDispatcher::ProcessWorker+0x3c8
    00000000`25cff8e0 000007fd`04e61832 sqldk!SchedulerManager::ThreadEntryPoint+0x236
    00000000`25cff980 000007fd`053cd609 kernel32!BaseThreadInitThunk+0x1a
    00000000`25cff9b0 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    22 Id: 196c.1104 Suspend: 0 Teb: 000007f7`639d0000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`25efed18 000007fd`023036ad ntdll!ZwRemoveIoCompletion+0xa
    00000000`25efed20 000007fd`04e615a2 KERNELBASE!GetQueuedCompletionStatus+0x39
    00000000`25efed80 000007fc`eb8e2bdc kernel32!GetQueuedCompletionStatusStub+0x12
    00000000`25efedc0 000007fc`eb8d3d80 sqldk!SOS_Node::ListenOnIOCompletionPort+0x105
    00000000`25efef90 000007fc`eb8d3b64 sqldk!SOS_Task::Param::Execute+0x21e
    00000000`25eff590 000007fc`eb8d3967 sqldk!SOS_Scheduler::RunTask+0xa8
    00000000`25eff600 000007fc`eb8f2f0f sqldk!SOS_Scheduler::ProcessTasks+0x29a
    00000000`25eff680 000007fc`eb8f3750 sqldk!SchedulerManager::WorkerEntryPoint+0x261
    00000000`25eff720 000007fc`eb8f2c5d sqldk!SystemThread::RunWorker+0x8f
    00000000`25eff750 000007fc`eb8f3f88 sqldk!SystemThreadDispatcher::ProcessWorker+0x3c8
    00000000`25eff800 000007fd`04e61832 sqldk!SchedulerManager::ThreadEntryPoint+0x236
    00000000`25eff8a0 000007fd`053cd609 kernel32!BaseThreadInitThunk+0x1a
    00000000`25eff8d0 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    23 Id: 196c.2f14 Suspend: 0 Teb: 000007f7`639ce000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`260ff848 000007fd`023010ea ntdll!ZwWaitForSingleObject+0xa
    00000000`260ff850 000007fc`eb8cb073 KERNELBASE!WaitForSingleObjectEx+0x92
    00000000`260ff8f0 000007fc`eb8cba29 sqldk!SOS_Scheduler::SwitchContext+0x302
    00000000`260ffb90 000007fc`eb8d3891 sqldk!SOS_Scheduler::SuspendNonPreemptive+0xd2
    00000000`260ffbd0 000007fc`eb8d3923 sqldk!WorkDispatcher::DequeueTask+0x4c6
    00000000`260ffc50 000007fc`eb8f2f0f sqldk!SOS_Scheduler::ProcessTasks+0x1e3
    00000000`260ffcd0 000007fc`eb8f3750 sqldk!SchedulerManager::WorkerEntryPoint+0x261
    00000000`260ffd70 000007fc`eb8f2c5d sqldk!SystemThread::RunWorker+0x8f
    00000000`260ffda0 000007fc`eb8f3f88 sqldk!SystemThreadDispatcher::ProcessWorker+0x3c8
    00000000`260ffe50 000007fd`04e61832 sqldk!SchedulerManager::ThreadEntryPoint+0x236
    00000000`260ffef0 000007fd`053cd609 kernel32!BaseThreadInitThunk+0x1a
    00000000`260fff20 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    24 Id: 196c.f94 Suspend: 0 Teb: 000007f7`639cc000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`263ee788 000007fd`02357632 ntdll!ZwSignalAndWaitForSingleObject+0xa
    00000000`263ee790 000007fc`eb8ce523 KERNELBASE!SignalObjectAndWait+0x82
    00000000`263ee840 000007fc`eb8cba29 sqldk!SOS_Scheduler::Switch+0xb5
    00000000`263eedc0 000007fc`ec5d54ad sqldk!SOS_Scheduler::SuspendNonPreemptive+0xd2
    00000000`263eee00 000007fc`ecd94aa0 sqllang!EventInternal::Wait+0x251
    00000000`263eee50 000007fc`ecd95cc9 sqllang!CSbTransmitter::TransmitterThread+0x250
    00000000`263ef160 000007fc`ecaa7701 sqllang!CSbTransmitter::BeginTransmitterThread+0x9
    00000000`263ef190 000007fc`ecaa75c7 sqllang!CSbTask::TaskStart+0x14b
    00000000`263ef2a0 000007fc`eb8d3d80 sqllang!CSbTask::BeginTaskStart+0x17
    00000000`263ef2e0 000007fc`eb8d3b64 sqldk!SOS_Task::Param::Execute+0x21e
    00000000`263ef8e0 000007fc`eb8d3967 sqldk!SOS_Scheduler::RunTask+0xa8
    00000000`263ef950 000007fc`eb8f2f0f sqldk!SOS_Scheduler::ProcessTasks+0x29a
    00000000`263ef9d0 000007fc`eb8f3750 sqldk!SchedulerManager::WorkerEntryPoint+0x261
    00000000`263efa70 000007fc`eb8f2c5d sqldk!SystemThread::RunWorker+0x8f
    00000000`263efaa0 000007fc`eb8f3f88 sqldk!SystemThreadDispatcher::ProcessWorker+0x3c8
    00000000`263efb50 000007fd`04e61832 sqldk!SchedulerManager::ThreadEntryPoint+0x236
    00000000`263efbf0 000007fd`053cd609 kernel32!BaseThreadInitThunk+0x1a
    00000000`263efc20 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    25 Id: 196c.16f0 Suspend: 0 Teb: 000007f7`639ca000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`265ee628 000007fd`02357632 ntdll!ZwSignalAndWaitForSingleObject+0xa
    00000000`265ee630 000007fc`eb8ce523 KERNELBASE!SignalObjectAndWait+0x82
    00000000`265ee6e0 000007fc`eb8cba29 sqldk!SOS_Scheduler::Switch+0xb5
    00000000`265eec60 000007f7`63d2ef5e sqldk!SOS_Scheduler::SuspendNonPreemptive+0xd2
    00000000`265eeca0 000007f7`63d2c120 sqlservr!EventInternal::Wait+0x22e
    00000000`265eece0 000007fc`ef89f829 sqlservr!SignalProc+0x1b0
    00000000`265eeec0 000007fc`eb8d3d80 sqlmin!StartUp::InitDBMS+0x169
    00000000`265eefc0 000007fc`eb8d3b64 sqldk!SOS_Task::Param::Execute+0x21e
    00000000`265ef5c0 000007fc`eb8d3967 sqldk!SOS_Scheduler::RunTask+0xa8
    00000000`265ef630 000007fc`eb8f2f0f sqldk!SOS_Scheduler::ProcessTasks+0x29a
    00000000`265ef6b0 000007fc`eb8f3750 sqldk!SchedulerManager::WorkerEntryPoint+0x261
    00000000`265ef750 000007fc`eb8f2c5d sqldk!SystemThread::RunWorker+0x8f
    00000000`265ef780 000007fc`eb8f3f88 sqldk!SystemThreadDispatcher::ProcessWorker+0x3c8
    00000000`265ef830 000007fd`04e61832 sqldk!SchedulerManager::ThreadEntryPoint+0x236
    00000000`265ef8d0 000007fd`053cd609 kernel32!BaseThreadInitThunk+0x1a
    00000000`265ef900 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    26 Id: 196c.1970 Suspend: 0 Teb: 000007f7`639c8000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`26cddce8 000007fd`023010ea ntdll!ZwWaitForSingleObject+0xa
    00000000`26cddcf0 000007fc`eb8db8f6 KERNELBASE!WaitForSingleObjectEx+0x92
    00000000`26cddd90 000007fc`eb8db874 sqldk!SystemThread::Suspend+0x26
    00000000`26cdddc0 000007fc`ec5d5570 sqldk!SOS_Scheduler::SuspendPreemptive+0x215
    00000000`26cddf20 000007fc`ec9486ea sqllang!SOS_Task::Sleep+0xdf
    00000000`26cddf70 000007fc`ed638dcb sqllang!DiagnoseComponentMgr::Execute+0xf7f
    00000000`26cdeb50 000007fc`ed639204 sqllang!SystemHealthMonitor+0x12b
    00000000`26cded40 000007fc`eb8d3d80 sqllang!SystemHealthMonitorThread+0x94
    00000000`26cdf010 000007fc`eb8d3b64 sqldk!SOS_Task::Param::Execute+0x21e
    00000000`26cdf610 000007fc`eb8d3967 sqldk!SOS_Scheduler::RunTask+0xa8
    00000000`26cdf680 000007fc`eb8f2f0f sqldk!SOS_Scheduler::ProcessTasks+0x29a
    00000000`26cdf700 000007fc`eb8f3750 sqldk!SchedulerManager::WorkerEntryPoint+0x261
    00000000`26cdf7a0 000007fc`eb8f2c5d sqldk!SystemThread::RunWorker+0x8f
    00000000`26cdf7d0 000007fc`eb8f3f88 sqldk!SystemThreadDispatcher::ProcessWorker+0x3c8
    00000000`26cdf880 000007fd`04e61832 sqldk!SchedulerManager::ThreadEntryPoint+0x236
    00000000`26cdf920 000007fd`053cd609 kernel32!BaseThreadInitThunk+0x1a
    00000000`26cdf950 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    27 Id: 196c.2d84 Suspend: 0 Teb: 000007f7`639c4000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`2b0de728 000007fd`023010ea ntdll!ZwWaitForSingleObject+0xa
    00000000`2b0de730 000007fc`eb8cb073 KERNELBASE!WaitForSingleObjectEx+0x92
    00000000`2b0de7d0 000007fc`eb8cba29 sqldk!SOS_Scheduler::SwitchContext+0x302
    00000000`2b0dea70 000007fc`ee663899 sqldk!SOS_Scheduler::SuspendNonPreemptive+0xd2
    00000000`2b0deab0 000007fc`ee665212 sqlmin!SOS_Task::Sleep+0x13c
    00000000`2b0deb10 000007fc`eb8d3d80 sqlmin!RecoveryConfigMgr::RecoveryWriter+0x292
    00000000`2b0defc0 000007fc`eb8d3b64 sqldk!SOS_Task::Param::Execute+0x21e
    00000000`2b0df5c0 000007fc`eb8d3967 sqldk!SOS_Scheduler::RunTask+0xa8
    00000000`2b0df630 000007fc`eb8f2f0f sqldk!SOS_Scheduler::ProcessTasks+0x29a
    00000000`2b0df6b0 000007fc`eb8f3750 sqldk!SchedulerManager::WorkerEntryPoint+0x261
    00000000`2b0df750 000007fc`eb8f2c5d sqldk!SystemThread::RunWorker+0x8f
    00000000`2b0df780 000007fc`eb8f3f88 sqldk!SystemThreadDispatcher::ProcessWorker+0x3c8
    00000000`2b0df830 000007fd`04e61832 sqldk!SchedulerManager::ThreadEntryPoint+0x236
    00000000`2b0df8d0 000007fd`053cd609 kernel32!BaseThreadInitThunk+0x1a
    00000000`2b0df900 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    28 Id: 196c.cd0 Suspend: 0 Teb: 000007f7`639c2000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`2b2de658 000007fd`023010ea ntdll!ZwWaitForSingleObject+0xa
    00000000`2b2de660 000007fc`eb8cb073 KERNELBASE!WaitForSingleObjectEx+0x92
    00000000`2b2de700 000007fc`eb8cba29 sqldk!SOS_Scheduler::SwitchContext+0x302
    00000000`2b2de9a0 000007fc`ec5d54ad sqldk!SOS_Scheduler::SuspendNonPreemptive+0xd2
    00000000`2b2de9e0 000007fc`eced979b sqllang!EventInternal::Wait+0x251
    00000000`2b2dea30 000007fc`eced89cd sqllang!HostWait<EventAutoInternal >+0x18b
    00000000`2b2dea90 000007fc`eced6f70 sqllang!CHostEvent<IHostAutoEvent,EventAutoInternal,4194529,DD_NullHelper>::Wait+0x4d
    00000000`2b2deaf0 000007fc`f3fff94f sqllang!CHostEventWrapper<IHostAutoEvent,EventAutoInternal,4194529,DD_NullHelper>::Wait+0xb0
    00000000`2b2deb30 000007fc`f42543a3 clr!CLREventBase::CreateRWLockWriterEvent+0x90
    00000000`2b2deb60 000007fc`f42702ff clr! ?? ::FNODOBFM::`string’+0x62caf
    00000000`2b2debf0 000007fc`f3e286f9 clr! ?? ::FNODOBFM::`string’+0x81b01
    00000000`2b2dec30 000007fc`f3e53cf0 clr!SVR::GCHeap::FinalizerThreadWorker+0x4a
    00000000`2b2dec70 000007fc`f3e53c7e clr!DebuggerU2MCatchHandlerFrame::DebuggerU2MCatchHandlerFrame+0xa0
    00000000`2b2decb0 000007fc`f3e53bf5 clr!ManagedPerAppDomainTPCount::DispatchWorkItem+0x38e
    00000000`2b2dedb0 000007fc`f3daee0e clr!ManagedPerAppDomainTPCount::DispatchWorkItem+0x2bd
    00000000`2b2dee40 000007fc`f3daaca0 clr!ManagedThreadBase_NoADTransition+0x3f
    00000000`2b2deea0 000007fc`ecede628 clr!SVR::GCHeap::FinalizerThreadStart+0xb4
    00000000`2b2deee0 000007fc`ecedc832 sqllang!CallProtectorImpl::CallExternalTrustedFull<ClrEntryPointCallTraits,unsigned long,FunctionCallBinder_1 >+0x78
    00000000`2b2def50 000007fc`ecedc7a9 sqllang!CHostTask::TaskExecute+0x72
    00000000`2b2defd0 000007fc`eb8d3d80 sqllang!CHostTask::TaskProcWrapper+0x9
    00000000`2b2df000 000007fc`eb8d3b64 sqldk!SOS_Task::Param::Execute+0x21e
    00000000`2b2df600 000007fc`eb8d3967 sqldk!SOS_Scheduler::RunTask+0xa8
    00000000`2b2df670 000007fc`eb8f2f0f sqldk!SOS_Scheduler::ProcessTasks+0x29a
    00000000`2b2df6f0 000007fc`eb8f3750 sqldk!SchedulerManager::WorkerEntryPoint+0x261
    00000000`2b2df790 000007fc`eb8f2c5d sqldk!SystemThread::RunWorker+0x8f
    00000000`2b2df7c0 000007fc`eb8f3f88 sqldk!SystemThreadDispatcher::ProcessWorker+0x3c8
    00000000`2b2df870 000007fd`04e61832 sqldk!SchedulerManager::ThreadEntryPoint+0x236
    00000000`2b2df910 000007fd`053cd609 kernel32!BaseThreadInitThunk+0x1a
    00000000`2b2df940 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    29 Id: 196c.20cc Suspend: 0 Teb: 000007f7`639ae000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`6d6ff6e8 000007fd`023012c6 ntdll!ZwWaitForMultipleObjects+0xa
    00000000`6d6ff6f0 000007fc`f3d8b4f3 KERNELBASE!WaitForMultipleObjectsEx+0xe5
    00000000`6d6ff9d0 000007fc`f3d8b41d clr!DebuggerRCThread::MainLoop+0xbf
    00000000`6d6ffa80 000007fc`f3d8b33f clr!DebuggerRCThread::ThreadProc+0xc6
    00000000`6d6ffad0 000007fd`04e61832 clr!DebuggerRCThread::ThreadProcStatic+0x3f
    00000000`6d6ffb20 000007fd`053cd609 kernel32!BaseThreadInitThunk+0x1a
    00000000`6d6ffb50 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    30 Id: 196c.2ed8 Suspend: 0 Teb: 000007f7`639aa000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`2c2af638 000007fd`023010ea ntdll!ZwWaitForSingleObject+0xa
    00000000`2c2af640 000007fc`f3c349bf KERNELBASE!WaitForSingleObjectEx+0x92
    00000000`2c2af6e0 000007fc`f3c34977 clr!CLREventBase::WaitEx+0x16c
    00000000`2c2af720 000007fc`f3c348f8 clr!CLREventBase::WaitEx+0x103
    00000000`2c2af780 000007fc`f3e3e743 clr!CLREventBase::WaitEx+0x70
    00000000`2c2af810 000007fc`f3dab6b7 clr!SVR::gc_heap::gc_thread_function+0x13a
    00000000`2c2af840 000007fd`04e61832 clr!SVR::gc_heap::gc_thread_stub+0x7a
    00000000`2c2af880 000007fd`053cd609 kernel32!BaseThreadInitThunk+0x1a
    00000000`2c2af8b0 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    31 Id: 196c.1778 Suspend: 0 Teb: 000007f7`639a8000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`2c40f928 000007fd`023010ea ntdll!ZwWaitForSingleObject+0xa
    00000000`2c40f930 000007fc`f3c349bf KERNELBASE!WaitForSingleObjectEx+0x92
    00000000`2c40f9d0 000007fc`f3c34977 clr!CLREventBase::WaitEx+0x16c
    00000000`2c40fa10 000007fc`f3c348f8 clr!CLREventBase::WaitEx+0x103
    00000000`2c40fa70 000007fc`f3e3e6c6 clr!CLREventBase::WaitEx+0x70
    00000000`2c40fb00 000007fc`f3dab6b7 clr!SVR::gc_heap::gc_thread_function+0x3a
    00000000`2c40fb30 000007fd`04e61832 clr!SVR::gc_heap::gc_thread_stub+0x7a
    00000000`2c40fc70 000007fd`053cd609 kernel32!BaseThreadInitThunk+0x1a
    00000000`2c40fca0 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    32 Id: 196c.1870 Suspend: 0 Teb: 000007f7`639a6000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`2c48f6b8 000007fd`023010ea ntdll!ZwWaitForSingleObject+0xa
    00000000`2c48f6c0 000007fc`f3c349bf KERNELBASE!WaitForSingleObjectEx+0x92
    00000000`2c48f760 000007fc`f3c34977 clr!CLREventBase::WaitEx+0x16c
    00000000`2c48f7a0 000007fc`f3c348f8 clr!CLREventBase::WaitEx+0x103
    00000000`2c48f800 000007fc`f3e3e6c6 clr!CLREventBase::WaitEx+0x70
    00000000`2c48f890 000007fc`f3dab6b7 clr!SVR::gc_heap::gc_thread_function+0x3a
    00000000`2c48f8c0 000007fd`04e61832 clr!SVR::gc_heap::gc_thread_stub+0x7a
    00000000`2c48fb00 000007fd`053cd609 kernel32!BaseThreadInitThunk+0x1a
    00000000`2c48fb30 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    33 Id: 196c.198 Suspend: 0 Teb: 000007f7`639a4000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`2c5ff3b8 000007fd`023010ea ntdll!ZwWaitForSingleObject+0xa
    00000000`2c5ff3c0 000007fc`f3c349bf KERNELBASE!WaitForSingleObjectEx+0x92
    00000000`2c5ff460 000007fc`f3c34977 clr!CLREventBase::WaitEx+0x16c
    00000000`2c5ff4a0 000007fc`f3c348f8 clr!CLREventBase::WaitEx+0x103
    00000000`2c5ff500 000007fc`f3e3e6c6 clr!CLREventBase::WaitEx+0x70
    00000000`2c5ff590 000007fc`f3dab6b7 clr!SVR::gc_heap::gc_thread_function+0x3a
    00000000`2c5ff5c0 000007fd`04e61832 clr!SVR::gc_heap::gc_thread_stub+0x7a
    00000000`2c5ff900 000007fd`053cd609 kernel32!BaseThreadInitThunk+0x1a
    00000000`2c5ff930 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    34 Id: 196c.3364 Suspend: 0 Teb: 000007f7`639a2000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`2c67f528 000007fd`023010ea ntdll!ZwWaitForSingleObject+0xa
    00000000`2c67f530 000007fc`f3c349bf KERNELBASE!WaitForSingleObjectEx+0x92
    00000000`2c67f5d0 000007fc`f3c34977 clr!CLREventBase::WaitEx+0x16c
    00000000`2c67f610 000007fc`f3c348f8 clr!CLREventBase::WaitEx+0x103
    00000000`2c67f670 000007fc`f3e3e6c6 clr!CLREventBase::WaitEx+0x70
    00000000`2c67f700 000007fc`f3dab6b7 clr!SVR::gc_heap::gc_thread_function+0x3a
    00000000`2c67f730 000007fd`04e61832 clr!SVR::gc_heap::gc_thread_stub+0x7a
    00000000`2c67fb70 000007fd`053cd609 kernel32!BaseThreadInitThunk+0x1a
    00000000`2c67fba0 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    35 Id: 196c.764 Suspend: 0 Teb: 000007f7`639a0000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`2c6ff698 000007fd`023010ea ntdll!ZwWaitForSingleObject+0xa
    00000000`2c6ff6a0 000007fc`f3c349bf KERNELBASE!WaitForSingleObjectEx+0x92
    00000000`2c6ff740 000007fc`f3c34977 clr!CLREventBase::WaitEx+0x16c
    00000000`2c6ff780 000007fc`f3c348f8 clr!CLREventBase::WaitEx+0x103
    00000000`2c6ff7e0 000007fc`f3e3e6c6 clr!CLREventBase::WaitEx+0x70
    00000000`2c6ff870 000007fc`f3dab6b7 clr!SVR::gc_heap::gc_thread_function+0x3a
    00000000`2c6ff8a0 000007fd`04e61832 clr!SVR::gc_heap::gc_thread_stub+0x7a
    00000000`2c6ffde0 000007fd`053cd609 kernel32!BaseThreadInitThunk+0x1a
    00000000`2c6ffe10 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    36 Id: 196c.2ef8 Suspend: 0 Teb: 000007f7`6399e000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`6e48efb8 000007fd`023010ea ntdll!ZwWaitForSingleObject+0xa
    00000000`6e48efc0 000007fc`f3c349bf KERNELBASE!WaitForSingleObjectEx+0x92
    00000000`6e48f060 000007fc`f3c34977 clr!CLREventBase::WaitEx+0x16c
    00000000`6e48f0a0 000007fc`f3c348f8 clr!CLREventBase::WaitEx+0x103
    00000000`6e48f100 000007fc`f3e3e6c6 clr!CLREventBase::WaitEx+0x70
    00000000`6e48f190 000007fc`f3dab6b7 clr!SVR::gc_heap::gc_thread_function+0x3a
    00000000`6e48f1c0 000007fd`04e61832 clr!SVR::gc_heap::gc_thread_stub+0x7a
    00000000`6e48f800 000007fd`053cd609 kernel32!BaseThreadInitThunk+0x1a
    00000000`6e48f830 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    37 Id: 196c.22c0 Suspend: 0 Teb: 000007f7`6399c000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`6e50f618 000007fd`023010ea ntdll!ZwWaitForSingleObject+0xa
    00000000`6e50f620 000007fc`f3c349bf KERNELBASE!WaitForSingleObjectEx+0x92
    00000000`6e50f6c0 000007fc`f3c34977 clr!CLREventBase::WaitEx+0x16c
    00000000`6e50f700 000007fc`f3c348f8 clr!CLREventBase::WaitEx+0x103
    00000000`6e50f760 000007fc`f3e3e6c6 clr!CLREventBase::WaitEx+0x70
    00000000`6e50f7f0 000007fc`f3dab6b7 clr!SVR::gc_heap::gc_thread_function+0x3a
    00000000`6e50f820 000007fd`04e61832 clr!SVR::gc_heap::gc_thread_stub+0x7a
    00000000`6e50ff60 000007fd`053cd609 kernel32!BaseThreadInitThunk+0x1a
    00000000`6e50ff90 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    38 Id: 196c.20d8 Suspend: 0 Teb: 000007f7`6399a000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`6e70eb88 000007fd`023010ea ntdll!ZwWaitForSingleObject+0xa
    00000000`6e70eb90 000007fc`eb8cb073 KERNELBASE!WaitForSingleObjectEx+0x92
    00000000`6e70ec30 000007fc`eb8cba29 sqldk!SOS_Scheduler::SwitchContext+0x302
    00000000`6e70eed0 000007fc`ec5d54ad sqldk!SOS_Scheduler::SuspendNonPreemptive+0xd2
    00000000`6e70ef10 000007fc`eced979b sqllang!EventInternal::Wait+0x251
    00000000`6e70ef60 000007fc`eced89cd sqllang!HostWait<EventAutoInternal >+0x18b
    00000000`6e70efc0 000007fc`eced6f70 sqllang!CHostEvent<IHostAutoEvent,EventAutoInternal,4194529,DD_NullHelper>::Wait+0x4d
    00000000`6e70f020 000007fc`f3fff94f sqllang!CHostEventWrapper<IHostAutoEvent,EventAutoInternal,4194529,DD_NullHelper>::Wait+0xb0
    00000000`6e70f060 000007fc`f42543a3 clr!CLREventBase::CreateRWLockWriterEvent+0x90
    00000000`6e70f090 000007fc`f3e1bc24 clr! ?? ::FNODOBFM::`string’+0x62caf
    00000000`6e70f120 000007fc`ecede628 clr!AppDomain::ADUnloadThreadStart+0x190
    00000000`6e70f250 000007fc`ecedc832 sqllang!CallProtectorImpl::CallExternalTrustedFull<ClrEntryPointCallTraits,unsigned long,FunctionCallBinder_1 >+0x78
    00000000`6e70f2c0 000007fc`ecedc7a9 sqllang!CHostTask::TaskExecute+0x72
    00000000`6e70f340 000007fc`eb8d3d80 sqllang!CHostTask::TaskProcWrapper+0x9
    00000000`6e70f370 000007fc`eb8d3b64 sqldk!SOS_Task::Param::Execute+0x21e
    00000000`6e70f970 000007fc`eb8d3967 sqldk!SOS_Scheduler::RunTask+0xa8
    00000000`6e70f9e0 000007fc`eb8f2f0f sqldk!SOS_Scheduler::ProcessTasks+0x29a
    00000000`6e70fa60 000007fc`eb8f3750 sqldk!SchedulerManager::WorkerEntryPoint+0x261
    00000000`6e70fb00 000007fc`eb8f2c5d sqldk!SystemThread::RunWorker+0x8f
    00000000`6e70fb30 000007fc`eb8f3f88 sqldk!SystemThreadDispatcher::ProcessWorker+0x3c8
    00000000`6e70fbe0 000007fd`04e61832 sqldk!SchedulerManager::ThreadEntryPoint+0x236
    00000000`6e70fc80 000007fd`053cd609 kernel32!BaseThreadInitThunk+0x1a
    00000000`6e70fcb0 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    39 Id: 196c.2910 Suspend: 0 Teb: 000007f7`63998000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`6ed2ecf8 000007fd`023010ea ntdll!ZwWaitForSingleObject+0xa
    00000000`6ed2ed00 000007fc`eb8cb073 KERNELBASE!WaitForSingleObjectEx+0x92
    00000000`6ed2eda0 000007fc`eb8cba29 sqldk!SOS_Scheduler::SwitchContext+0x302
    00000000`6ed2f040 000007fc`ec5d54ad sqldk!SOS_Scheduler::SuspendNonPreemptive+0xd2
    00000000`6ed2f080 000007fc`ec5dae18 sqllang!EventInternal::Wait+0x251
    00000000`6ed2f0d0 000007fc`ed774609 sqllang!CTraceManagementTask::Invoke+0xee
    00000000`6ed2f130 000007fc`eb8d3d80 sqllang!CTraceBatchTask::Task+0x259
    00000000`6ed2f220 000007fc`eb8d3b64 sqldk!SOS_Task::Param::Execute+0x21e
    00000000`6ed2f820 000007fc`eb8d3967 sqldk!SOS_Scheduler::RunTask+0xa8
    00000000`6ed2f890 000007fc`eb8f2f0f sqldk!SOS_Scheduler::ProcessTasks+0x29a
    00000000`6ed2f910 000007fc`eb8f3750 sqldk!SchedulerManager::WorkerEntryPoint+0x261
    00000000`6ed2f9b0 000007fc`eb8f2c5d sqldk!SystemThread::RunWorker+0x8f
    00000000`6ed2f9e0 000007fc`eb8f3f88 sqldk!SystemThreadDispatcher::ProcessWorker+0x3c8
    00000000`6ed2fa90 000007fd`04e61832 sqldk!SchedulerManager::ThreadEntryPoint+0x236
    00000000`6ed2fb30 000007fd`053cd609 kernel32!BaseThreadInitThunk+0x1a
    00000000`6ed2fb60 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    40 Id: 196c.2794 Suspend: 0 Teb: 000007f7`63996000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`6ef2f758 000007fd`023010ea ntdll!ZwWaitForSingleObject+0xa
    00000000`6ef2f760 000007fc`eb8cb073 KERNELBASE!WaitForSingleObjectEx+0x92
    00000000`6ef2f800 000007fc`eb8cba29 sqldk!SOS_Scheduler::SwitchContext+0x302
    00000000`6ef2faa0 000007fc`eb8d3891 sqldk!SOS_Scheduler::SuspendNonPreemptive+0xd2
    00000000`6ef2fae0 000007fc`eb8d3923 sqldk!WorkDispatcher::DequeueTask+0x4c6
    00000000`6ef2fb60 000007fc`eb8f2f0f sqldk!SOS_Scheduler::ProcessTasks+0x1e3
    00000000`6ef2fbe0 000007fc`eb8f3750 sqldk!SchedulerManager::WorkerEntryPoint+0x261
    00000000`6ef2fc80 000007fc`eb8f2c5d sqldk!SystemThread::RunWorker+0x8f
    00000000`6ef2fcb0 000007fc`eb8f3f88 sqldk!SystemThreadDispatcher::ProcessWorker+0x3c8
    00000000`6ef2fd60 000007fd`04e61832 sqldk!SchedulerManager::ThreadEntryPoint+0x236
    00000000`6ef2fe00 000007fd`053cd609 kernel32!BaseThreadInitThunk+0x1a
    00000000`6ef2fe30 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    41 Id: 196c.1c5c Suspend: 0 Teb: 000007f7`63992000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`6e10fa68 000007fd`053781c3 ntdll!ZwWaitForWorkViaWorkerFactory+0xa
    00000000`6e10fa70 000007fd`04e61832 ntdll!TppWorkerThread+0x275
    00000000`6e10fd10 000007fd`053cd609 kernel32!BaseThreadInitThunk+0x1a
    00000000`6e10fd40 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    42 Id: 196c.2c38 Suspend: 0 Teb: 000007f7`638d8000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`6f9ae9d8 000007fd`02357632 ntdll!ZwSignalAndWaitForSingleObject+0xa
    00000000`6f9ae9e0 000007fc`eb8ce523 KERNELBASE!SignalObjectAndWait+0x82
    00000000`6f9aea90 000007fc`eb8cba29 sqldk!SOS_Scheduler::Switch+0xb5
    00000000`6f9af010 000007fc`ec5d54ad sqldk!SOS_Scheduler::SuspendNonPreemptive+0xd2
    00000000`6f9af050 000007fc`ece3822c sqllang!EventInternal::Wait+0x251
    00000000`6f9af0a0 000007fc`ece38f39 sqllang!CServiceBrokerMgr::PrimaryEventHandler+0x1ac
    00000000`6f9af260 000007fc`ecaa7701 sqllang!CSbEventHandler::Invoke+0x19
    00000000`6f9af290 000007fc`ecaa75c7 sqllang!CSbTask::TaskStart+0x14b
    00000000`6f9af3a0 000007fc`eb8d3d80 sqllang!CSbTask::BeginTaskStart+0x17
    00000000`6f9af3e0 000007fc`eb8d3b64 sqldk!SOS_Task::Param::Execute+0x21e
    00000000`6f9af9e0 000007fc`eb8d3967 sqldk!SOS_Scheduler::RunTask+0xa8
    00000000`6f9afa50 000007fc`eb8f2f0f sqldk!SOS_Scheduler::ProcessTasks+0x29a
    00000000`6f9afad0 000007fc`eb8f3750 sqldk!SchedulerManager::WorkerEntryPoint+0x261
    00000000`6f9afb70 000007fc`eb8f2c5d sqldk!SystemThread::RunWorker+0x8f
    00000000`6f9afba0 000007fc`eb8f3f88 sqldk!SystemThreadDispatcher::ProcessWorker+0x3c8
    00000000`6f9afc50 000007fd`04e61832 sqldk!SchedulerManager::ThreadEntryPoint+0x236
    00000000`6f9afcf0 000007fd`053cd609 kernel32!BaseThreadInitThunk+0x1a
    00000000`6f9afd20 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    43 Id: 196c.2124 Suspend: 0 Teb: 000007f7`638ca000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`707ae998 000007fd`023010ea ntdll!ZwWaitForSingleObject+0xa
    00000000`707ae9a0 000007fc`eb8cb073 KERNELBASE!WaitForSingleObjectEx+0x92
    00000000`707aea40 000007fc`eb8cba29 sqldk!SOS_Scheduler::SwitchContext+0x302
    00000000`707aece0 000007fc`ee665946 sqldk!SOS_Scheduler::SuspendNonPreemptive+0xd2
    00000000`707aed20 000007fc`ee665a63 sqlmin!EventInternal::Wait+0x1ee
    00000000`707aed70 000007fc`ecaa7701 sqlmin!CHadrFsIoManager::ProcessIoCompletions+0xb3
    00000000`707aeef0 000007fc`ecaa75c7 sqllang!CSbTask::TaskStart+0x14b
    00000000`707af000 000007fc`eb8d3d80 sqllang!CSbTask::BeginTaskStart+0x17
    00000000`707af040 000007fc`eb8d3b64 sqldk!SOS_Task::Param::Execute+0x21e
    00000000`707af640 000007fc`eb8d3967 sqldk!SOS_Scheduler::RunTask+0xa8
    00000000`707af6b0 000007fc`eb8f2f0f sqldk!SOS_Scheduler::ProcessTasks+0x29a
    00000000`707af730 000007fc`eb8f3750 sqldk!SchedulerManager::WorkerEntryPoint+0x261
    00000000`707af7d0 000007fc`eb8f2c5d sqldk!SystemThread::RunWorker+0x8f
    00000000`707af800 000007fc`eb8f3f88 sqldk!SystemThreadDispatcher::ProcessWorker+0x3c8
    00000000`707af8b0 000007fd`04e61832 sqldk!SchedulerManager::ThreadEntryPoint+0x236
    00000000`707af950 000007fd`053cd609 kernel32!BaseThreadInitThunk+0x1a
    00000000`707af980 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    44 Id: 196c.588 Suspend: 0 Teb: 000007f7`638c4000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`70daea18 000007fd`023010ea ntdll!ZwWaitForSingleObject+0xa
    00000000`70daea20 000007fc`eb8cb073 KERNELBASE!WaitForSingleObjectEx+0x92
    00000000`70daeac0 000007fc`eb8cba29 sqldk!SOS_Scheduler::SwitchContext+0x302
    00000000`70daed60 000007fc`ec5d5570 sqldk!SOS_Scheduler::SuspendNonPreemptive+0xd2
    00000000`70daeda0 000007fc`ec5d5782 sqllang!SOS_Task::Sleep+0xdf
    00000000`70daedf0 000007fc`ecaa7701 sqllang!CSbTransmissionLazyFlusher::LazyFlushTask+0x2e5
    00000000`70daefc0 000007fc`ecaa75c7 sqllang!CSbTask::TaskStart+0x14b
    00000000`70daf0d0 000007fc`eb8d3d80 sqllang!CSbTask::BeginTaskStart+0x17
    00000000`70daf110 000007fc`eb8d3b64 sqldk!SOS_Task::Param::Execute+0x21e
    00000000`70daf710 000007fc`eb8d3967 sqldk!SOS_Scheduler::RunTask+0xa8
    00000000`70daf780 000007fc`eb8f2f0f sqldk!SOS_Scheduler::ProcessTasks+0x29a
    00000000`70daf800 000007fc`eb8f3750 sqldk!SchedulerManager::WorkerEntryPoint+0x261
    00000000`70daf8a0 000007fc`eb8f2c5d sqldk!SystemThread::RunWorker+0x8f
    00000000`70daf8d0 000007fc`eb8f3f88 sqldk!SystemThreadDispatcher::ProcessWorker+0x3c8
    00000000`70daf980 000007fd`04e61832 sqldk!SchedulerManager::ThreadEntryPoint+0x236
    00000000`70dafa20 000007fd`053cd609 kernel32!BaseThreadInitThunk+0x1a
    00000000`70dafa50 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    45 Id: 196c.a94 Suspend: 0 Teb: 000007f7`63994000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`2d10e568 000007fd`02357632 ntdll!ZwSignalAndWaitForSingleObject+0xa
    00000000`2d10e570 000007fc`eb8ce523 KERNELBASE!SignalObjectAndWait+0x82
    00000000`2d10e620 000007fc`eb8cba29 sqldk!SOS_Scheduler::Switch+0xb5
    00000000`2d10eba0 000007fc`ec5d54ad sqldk!SOS_Scheduler::SuspendNonPreemptive+0xd2
    00000000`2d10ebe0 000007fc`ecd94aa0 sqllang!EventInternal::Wait+0x251
    00000000`2d10ec30 000007fc`ecd95cc9 sqllang!CSbTransmitter::TransmitterThread+0x250
    00000000`2d10ef40 000007fc`ecaa7701 sqllang!CSbTransmitter::BeginTransmitterThread+0x9
    00000000`2d10ef70 000007fc`ecaa75c7 sqllang!CSbTask::TaskStart+0x14b
    00000000`2d10f080 000007fc`eb8d3d80 sqllang!CSbTask::BeginTaskStart+0x17
    00000000`2d10f0c0 000007fc`eb8d3b64 sqldk!SOS_Task::Param::Execute+0x21e
    00000000`2d10f6c0 000007fc`eb8d3967 sqldk!SOS_Scheduler::RunTask+0xa8
    00000000`2d10f730 000007fc`eb8f2f0f sqldk!SOS_Scheduler::ProcessTasks+0x29a
    00000000`2d10f7b0 000007fc`eb8f3750 sqldk!SchedulerManager::WorkerEntryPoint+0x261
    00000000`2d10f850 000007fc`eb8f2c5d sqldk!SystemThread::RunWorker+0x8f
    00000000`2d10f880 000007fc`eb8f3f88 sqldk!SystemThreadDispatcher::ProcessWorker+0x3c8
    00000000`2d10f930 000007fd`04e61832 sqldk!SchedulerManager::ThreadEntryPoint+0x236
    00000000`2d10f9d0 000007fd`053cd609 kernel32!BaseThreadInitThunk+0x1a
    00000000`2d10fa00 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    46 Id: 196c.3764 Suspend: 0 Teb: 000007f7`63898000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`2ff5eb28 000007fd`023010ea ntdll!ZwWaitForSingleObject+0xa
    00000000`2ff5eb30 00000000`71116685 KERNELBASE!WaitForSingleObjectEx+0x92
    00000000`2ff5ebd0 00000000`736e1bc7 XPStar!SQLAgentMonitorThread+0x515
    00000000`2ff5fb80 00000000`736e1c55 msvcr100!_callthreadstart+0x17
    00000000`2ff5fbb0 000007fd`04e61832 msvcr100!_threadstart+0x75
    00000000`2ff5fbe0 000007fd`053cd609 kernel32!BaseThreadInitThunk+0x1a
    00000000`2ff5fc10 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    47 Id: 196c.3110 Suspend: 0 Teb: 000007f7`639b0000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`312bf9c8 000007fd`023011f2 ntdll!ZwDelayExecution+0xa
    00000000`312bf9d0 000007fc`f4cca9fe KERNELBASE!SleepEx+0xaa
    00000000`312bfa70 000007fc`f4cca93d msdtcprx!CConnectionManager::TimerProcForNonGuardedUser+0xb6
    00000000`312bfad0 000007fd`04e61832 msdtcprx!CConnectionManager::TimerProc+0x1d
    00000000`312bfb00 000007fd`053cd609 kernel32!BaseThreadInitThunk+0x1a
    00000000`312bfb30 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    48 Id: 196c.2474 Suspend: 0 Teb: 000007f7`63896000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`314bf508 000007fd`023010ea ntdll!ZwWaitForSingleObject+0xa
    00000000`314bf510 000007fc`f4cd5588 KERNELBASE!WaitForSingleObjectEx+0x92
    00000000`314bf5b0 000007fc`f4cd425a msdtcprx!CSessionObject::MaintainItInUpState+0x340
    00000000`314bf860 000007fc`f4cd4012 msdtcprx!CSessionObject::MaintainIt+0x23a
    00000000`314bf8d0 000007fd`04e61832 msdtcprx!CSessionObject::MaintainSession+0xe
    00000000`314bf900 000007fd`053cd609 kernel32!BaseThreadInitThunk+0x1a
    00000000`314bf930 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    49 Id: 196c.1110 Suspend: 0 Teb: 000007f7`638c6000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`324bf768 000007fd`023036ad ntdll!ZwRemoveIoCompletion+0xa
    00000000`324bf770 000007fd`04e615a2 KERNELBASE!GetQueuedCompletionStatus+0x39
    00000000`324bf7d0 00000000`7162cb64 kernel32!GetQueuedCompletionStatusStub+0x12
    00000000`324bf810 000007fd`04e61832 sqlncli11!SNIAsyncWait+0x9f
    00000000`324bf860 000007fd`053cd609 kernel32!BaseThreadInitThunk+0x1a
    00000000`324bf890 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    50 Id: 196c.1d54 Suspend: 0 Teb: 000007f7`638b0000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`32ebf398 000007fd`023010ea ntdll!ZwWaitForSingleObject+0xa
    00000000`32ebf3a0 000007fc`eb8cb073 KERNELBASE!WaitForSingleObjectEx+0x92
    00000000`32ebf440 000007fc`eb8cba29 sqldk!SOS_Scheduler::SwitchContext+0x302
    00000000`32ebf6e0 000007fc`eb8d3891 sqldk!SOS_Scheduler::SuspendNonPreemptive+0xd2
    00000000`32ebf720 000007fc`eb8d3923 sqldk!WorkDispatcher::DequeueTask+0x4c6
    00000000`32ebf7a0 000007fc`eb8f2f0f sqldk!SOS_Scheduler::ProcessTasks+0x1e3
    00000000`32ebf820 000007fc`eb8f3750 sqldk!SchedulerManager::WorkerEntryPoint+0x261
    00000000`32ebf8c0 000007fc`eb8f2c5d sqldk!SystemThread::RunWorker+0x8f
    00000000`32ebf8f0 000007fc`eb8f3f88 sqldk!SystemThreadDispatcher::ProcessWorker+0x3c8
    00000000`32ebf9a0 000007fd`04e61832 sqldk!SchedulerManager::ThreadEntryPoint+0x236
    00000000`32ebfa40 000007fd`053cd609 kernel32!BaseThreadInitThunk+0x1a
    00000000`32ebfa70 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    51 Id: 196c.1cd0 Suspend: 0 Teb: 000007f7`638ae000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`332bf198 000007fd`023010ea ntdll!ZwWaitForSingleObject+0xa
    00000000`332bf1a0 000007fc`eb8cb073 KERNELBASE!WaitForSingleObjectEx+0x92
    00000000`332bf240 000007fc`eb8cba29 sqldk!SOS_Scheduler::SwitchContext+0x302
    00000000`332bf4e0 000007fc`eb8d3891 sqldk!SOS_Scheduler::SuspendNonPreemptive+0xd2
    00000000`332bf520 000007fc`eb8d3923 sqldk!WorkDispatcher::DequeueTask+0x4c6
    00000000`332bf5a0 000007fc`eb8f2f0f sqldk!SOS_Scheduler::ProcessTasks+0x1e3
    00000000`332bf620 000007fc`eb8f3750 sqldk!SchedulerManager::WorkerEntryPoint+0x261
    00000000`332bf6c0 000007fc`eb8f2c5d sqldk!SystemThread::RunWorker+0x8f
    00000000`332bf6f0 000007fc`eb8f3f88 sqldk!SystemThreadDispatcher::ProcessWorker+0x3c8
    00000000`332bf7a0 000007fd`04e61832 sqldk!SchedulerManager::ThreadEntryPoint+0x236
    00000000`332bf840 000007fd`053cd609 kernel32!BaseThreadInitThunk+0x1a
    00000000`332bf870 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    52 Id: 196c.5f8 Suspend: 0 Teb: 000007f7`636ac000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`540bf1f8 000007fd`023010ea ntdll!ZwWaitForSingleObject+0xa
    00000000`540bf200 000007fc`eb8cb073 KERNELBASE!WaitForSingleObjectEx+0x92
    00000000`540bf2a0 000007fc`eb8cba29 sqldk!SOS_Scheduler::SwitchContext+0x302
    00000000`540bf540 000007fc`eb8d3891 sqldk!SOS_Scheduler::SuspendNonPreemptive+0xd2
    00000000`540bf580 000007fc`eb8d3923 sqldk!WorkDispatcher::DequeueTask+0x4c6
    00000000`540bf600 000007fc`eb8f2f0f sqldk!SOS_Scheduler::ProcessTasks+0x1e3
    00000000`540bf680 000007fc`eb8f3750 sqldk!SchedulerManager::WorkerEntryPoint+0x261
    00000000`540bf720 000007fc`eb8f2c5d sqldk!SystemThread::RunWorker+0x8f
    00000000`540bf750 000007fc`eb8f3f88 sqldk!SystemThreadDispatcher::ProcessWorker+0x3c8
    00000000`540bf800 000007fd`04e61832 sqldk!SchedulerManager::ThreadEntryPoint+0x236
    00000000`540bf8a0 000007fd`053cd609 kernel32!BaseThreadInitThunk+0x1a
    00000000`540bf8d0 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    53 Id: 196c.3724 Suspend: 0 Teb: 000007f7`636aa000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`542bf238 000007fd`023010ea ntdll!ZwWaitForSingleObject+0xa
    00000000`542bf240 000007fc`eb8cb073 KERNELBASE!WaitForSingleObjectEx+0x92
    00000000`542bf2e0 000007fc`eb8cba29 sqldk!SOS_Scheduler::SwitchContext+0x302
    00000000`542bf580 000007fc`eb8d3891 sqldk!SOS_Scheduler::SuspendNonPreemptive+0xd2
    00000000`542bf5c0 000007fc`eb8d3923 sqldk!WorkDispatcher::DequeueTask+0x4c6
    00000000`542bf640 000007fc`eb8f2f0f sqldk!SOS_Scheduler::ProcessTasks+0x1e3
    00000000`542bf6c0 000007fc`eb8f3750 sqldk!SchedulerManager::WorkerEntryPoint+0x261
    00000000`542bf760 000007fc`eb8f2c5d sqldk!SystemThread::RunWorker+0x8f
    00000000`542bf790 000007fc`eb8f3f88 sqldk!SystemThreadDispatcher::ProcessWorker+0x3c8
    00000000`542bf840 000007fd`04e61832 sqldk!SchedulerManager::ThreadEntryPoint+0x236
    00000000`542bf8e0 000007fd`053cd609 kernel32!BaseThreadInitThunk+0x1a
    00000000`542bf910 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    54 Id: 196c.16d4 Suspend: 0 Teb: 000007f7`636a8000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`544bf418 000007fd`023010ea ntdll!ZwWaitForSingleObject+0xa
    00000000`544bf420 000007fc`eb8cb073 KERNELBASE!WaitForSingleObjectEx+0x92
    00000000`544bf4c0 000007fc`eb8cba29 sqldk!SOS_Scheduler::SwitchContext+0x302
    00000000`544bf760 000007fc`eb8d3891 sqldk!SOS_Scheduler::SuspendNonPreemptive+0xd2
    00000000`544bf7a0 000007fc`eb8d3923 sqldk!WorkDispatcher::DequeueTask+0x4c6
    00000000`544bf820 000007fc`eb8f2f0f sqldk!SOS_Scheduler::ProcessTasks+0x1e3
    00000000`544bf8a0 000007fc`eb8f3750 sqldk!SchedulerManager::WorkerEntryPoint+0x261
    00000000`544bf940 000007fc`eb8f2c5d sqldk!SystemThread::RunWorker+0x8f
    00000000`544bf970 000007fc`eb8f3f88 sqldk!SystemThreadDispatcher::ProcessWorker+0x3c8
    00000000`544bfa20 000007fd`04e61832 sqldk!SchedulerManager::ThreadEntryPoint+0x236
    00000000`544bfac0 000007fd`053cd609 kernel32!BaseThreadInitThunk+0x1a
    00000000`544bfaf0 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    55 Id: 196c.29b4 Suspend: 0 Teb: 000007f7`636a6000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`546bf158 000007fd`023010ea ntdll!ZwWaitForSingleObject+0xa
    00000000`546bf160 000007fc`eb8cb073 KERNELBASE!WaitForSingleObjectEx+0x92
    00000000`546bf200 000007fc`eb8cba29 sqldk!SOS_Scheduler::SwitchContext+0x302
    00000000`546bf4a0 000007fc`eb8d3891 sqldk!SOS_Scheduler::SuspendNonPreemptive+0xd2
    00000000`546bf4e0 000007fc`eb8d3923 sqldk!WorkDispatcher::DequeueTask+0x4c6
    00000000`546bf560 000007fc`eb8f2f0f sqldk!SOS_Scheduler::ProcessTasks+0x1e3
    00000000`546bf5e0 000007fc`eb8f3750 sqldk!SchedulerManager::WorkerEntryPoint+0x261
    00000000`546bf680 000007fc`eb8f2c5d sqldk!SystemThread::RunWorker+0x8f
    00000000`546bf6b0 000007fc`eb8f3f88 sqldk!SystemThreadDispatcher::ProcessWorker+0x3c8
    00000000`546bf760 000007fd`04e61832 sqldk!SchedulerManager::ThreadEntryPoint+0x236
    00000000`546bf800 000007fd`053cd609 kernel32!BaseThreadInitThunk+0x1a
    00000000`546bf830 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    56 Id: 196c.fac Suspend: 0 Teb: 000007f7`636a4000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`548bf668 000007fd`023010ea ntdll!ZwWaitForSingleObject+0xa
    00000000`548bf670 000007fc`eb8cb073 KERNELBASE!WaitForSingleObjectEx+0x92
    00000000`548bf710 000007fc`eb8cba29 sqldk!SOS_Scheduler::SwitchContext+0x302
    00000000`548bf9b0 000007fc`eb8d3891 sqldk!SOS_Scheduler::SuspendNonPreemptive+0xd2
    00000000`548bf9f0 000007fc`eb8d3923 sqldk!WorkDispatcher::DequeueTask+0x4c6
    00000000`548bfa70 000007fc`eb8f2f0f sqldk!SOS_Scheduler::ProcessTasks+0x1e3
    00000000`548bfaf0 000007fc`eb8f3750 sqldk!SchedulerManager::WorkerEntryPoint+0x261
    00000000`548bfb90 000007fc`eb8f2c5d sqldk!SystemThread::RunWorker+0x8f
    00000000`548bfbc0 000007fc`eb8f3f88 sqldk!SystemThreadDispatcher::ProcessWorker+0x3c8
    00000000`548bfc70 000007fd`04e61832 sqldk!SchedulerManager::ThreadEntryPoint+0x236
    00000000`548bfd10 000007fd`053cd609 kernel32!BaseThreadInitThunk+0x1a
    00000000`548bfd40 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    57 Id: 196c.2eb0 Suspend: 0 Teb: 000007f7`636a2000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`54abf538 000007fd`023010ea ntdll!ZwWaitForSingleObject+0xa
    00000000`54abf540 000007fc`eb8cb073 KERNELBASE!WaitForSingleObjectEx+0x92
    00000000`54abf5e0 000007fc`eb8cba29 sqldk!SOS_Scheduler::SwitchContext+0x302
    00000000`54abf880 000007fc`eb8d3891 sqldk!SOS_Scheduler::SuspendNonPreemptive+0xd2
    00000000`54abf8c0 000007fc`eb8d3923 sqldk!WorkDispatcher::DequeueTask+0x4c6
    00000000`54abf940 000007fc`eb8f2f0f sqldk!SOS_Scheduler::ProcessTasks+0x1e3
    00000000`54abf9c0 000007fc`eb8f3750 sqldk!SchedulerManager::WorkerEntryPoint+0x261
    00000000`54abfa60 000007fc`eb8f2c5d sqldk!SystemThread::RunWorker+0x8f
    00000000`54abfa90 000007fc`eb8f3f88 sqldk!SystemThreadDispatcher::ProcessWorker+0x3c8
    00000000`54abfb40 000007fd`04e61832 sqldk!SchedulerManager::ThreadEntryPoint+0x236
    00000000`54abfbe0 000007fd`053cd609 kernel32!BaseThreadInitThunk+0x1a
    00000000`54abfc10 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    58 Id: 196c.1008 Suspend: 0 Teb: 000007f7`636a0000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`54cbf788 000007fd`023010ea ntdll!ZwWaitForSingleObject+0xa
    00000000`54cbf790 000007fc`eb8cb073 KERNELBASE!WaitForSingleObjectEx+0x92
    00000000`54cbf830 000007fc`eb8cba29 sqldk!SOS_Scheduler::SwitchContext+0x302
    00000000`54cbfad0 000007fc`eb8d3891 sqldk!SOS_Scheduler::SuspendNonPreemptive+0xd2
    00000000`54cbfb10 000007fc`eb8d3923 sqldk!WorkDispatcher::DequeueTask+0x4c6
    00000000`54cbfb90 000007fc`eb8f2f0f sqldk!SOS_Scheduler::ProcessTasks+0x1e3
    00000000`54cbfc10 000007fc`eb8f3750 sqldk!SchedulerManager::WorkerEntryPoint+0x261
    00000000`54cbfcb0 000007fc`eb8f2c5d sqldk!SystemThread::RunWorker+0x8f
    00000000`54cbfce0 000007fc`eb8f3f88 sqldk!SystemThreadDispatcher::ProcessWorker+0x3c8
    00000000`54cbfd90 000007fd`04e61832 sqldk!SchedulerManager::ThreadEntryPoint+0x236
    00000000`54cbfe30 000007fd`053cd609 kernel32!BaseThreadInitThunk+0x1a
    00000000`54cbfe60 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    59 Id: 196c.2da0 Suspend: 0 Teb: 000007f7`6369e000 Unfrozen
    Child-SP RetAddr Call Site
    00000000`54ebf7d8 000007fd`02301

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