Re: Application hangs in IIS6 not in IIS5 isolation mode
From: Pat [MSFT] (patfilot_at_online.microsoft.com)
Date: 07/10/04
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Date: Fri, 9 Jul 2004 23:14:32 -0700
The hang is caused b/c the ASP threads are trying to marshal to thread c40:
Thread ID: 15
System Thread ID: c40
Kernel Time: 0:0:2.31
User Time: 0:0:7.734
*** ERROR: Symbol file could not be found. Defaulted to export symbols for
C:\wopac\DLL\WebbOPAC\430\olgsr430debug_e.dll -
*** ERROR: Symbol file could not be found. Defaulted to export symbols for
C:\wopac\DLL\WebbOPAC\430\web430test.dll -
Thread Type: ASP
Executing Page: Unable to locate ASP page
# ChildEBP RetAddr
00 025e7004 77f4262b SharedUserData!SystemCallStub+0x4
01 025e7008 77e418ea ntdll!NtDelayExecution+0xc
02 025e7070 0314e2dd kernel32!SleepEx+0x68
WARNING: Stack unwind information not available. Following frames may be
wrong.
03 025e7150 0314e497 olgsr430debug_e!DllCanUnloadNow+0x1cfa77
04 025e7190 0302efbc olgsr430debug_e!DllCanUnloadNow+0x1cfc31
05 025e72f0 02fa8205 olgsr430debug_e!DllCanUnloadNow+0xb0756
06 025e7384 02b5258d olgsr430debug_e!DllCanUnloadNow+0x2999f
07 025e7444 770f6109 web430test!DllCanUnloadNow+0x3ab
08 025e7464 7359a2fb OLEAUT32!DispCallFunc+0x15d
09 025e7dc0 7359a0f4 MSVBVM60!EpiInvokeMethod+0x5a3
0a 025e7e1c 7714d7ac MSVBVM60!BASIC_CLASS_Invoke+0x64
0b 025e7e50 7714c5d4 OLEAUT32!IDispatch_Invoke_Stub+0x50
0c 025e7e88 77ce847b OLEAUT32!IDispatch_RemoteInvoke_Thunk+0x30
0d 025e825c 77ce5862 RPCRT4!NdrStubCall2+0x1a4
0e 025e82b4 77114196 RPCRT4!CStdStubBuffer_Invoke+0xc6
0f 025e82d4 77269ae0 OLEAUT32!CStubWrapper::Invoke+0x9d
10 025e8318 77269a8a ole32!SyncStubInvoke+0x33
11 025e8360 77179c5c ole32!StubInvoke+0xa5
12 025e8438 77179b81 ole32!CCtxComChnl::ContextInvoke+0xe3
13 025e8454 771928d6 ole32!MTAInvoke+0x18
14 025e8484 77269eaf ole32!STAInvoke+0x56
15 025e84b8 77269872 ole32!AppInvoke+0x7c
16 025e8584 77269e66 ole32!ComInvokeWithLockAndIPID+0x29f
17 025e85ac 7719290a ole32!ComInvoke+0x9d
18 025e85bc 7717964b ole32!ThreadDispatch+0x1f
19 025e85d4 77d0612f ole32!ThreadWndProc+0xfc
1a 025e8600 77d069a5 USER32!InternalCallWinProc+0x1b
1b 025e8678 77d06689 USER32!UserCallWinProcCheckWow+0x151
1c 025e86e0 77d0fae4 USER32!DispatchMessageWorker+0x327
1d 025e86ec 73584d53 USER32!DispatchMessageA+0xb
1e 025e872c 73584c8c MSVBVM60!ThunderMsgLoop+0x87
1f 025e8740 73584c2e MSVBVM60!CMsoCMHandler::FPushMessageLoop+0x19
20 025e8770 73584b6a MSVBVM60!SCM::FPushMessageLoop+0xb9
21 025e878c 73584b35 MSVBVM60!SCM_MsoCompMgr::FPushMessageLoop+0x2b
22 025e87b0 73597f50 MSVBVM60!CMsoComponent::PushMsgLoop+0x26
23 025e87c0 73597ee6 MSVBVM60!HostDoEvents+0x41
24 025e87cc 03157a5b MSVBVM60!rtcDoEvents+0x7
25 025e884c 0314cea7 olgsr430debug_e!DllCanUnloadNow+0x1d91f5
26 025e89c8 0302ef1d olgsr430debug_e!DllCanUnloadNow+0x1ce641
27 025e8b30 02fa8205 olgsr430debug_e!DllCanUnloadNow+0xb06b7
28 025e8bc4 02b5258d olgsr430debug_e!DllCanUnloadNow+0x2999f
29 025e8c84 770f6109 web430test!DllCanUnloadNow+0x3ab
2a 025e8ca4 7359a2fb OLEAUT32!DispCallFunc+0x15d
2b 025e9600 7359a0f4 MSVBVM60!EpiInvokeMethod+0x5a3
2c 025e965c 7714d7ac MSVBVM60!BASIC_CLASS_Invoke+0x64
2d 025e9690 7714c5d4 OLEAUT32!IDispatch_Invoke_Stub+0x50
2e 025e96c8 77ce847b OLEAUT32!IDispatch_RemoteInvoke_Thunk+0x30
2f 025e9a9c 77ce5862 RPCRT4!NdrStubCall2+0x1a4
30 025e9af4 77114196 RPCRT4!CStdStubBuffer_Invoke+0xc6
31 025e9b14 77269ae0 OLEAUT32!CStubWrapper::Invoke+0x9d
This thread (which is blocking everyone else) is calling Sleep() from within
the olgsr430debug_e.dll. It appears that the dll is the cause of the hang.
So, a couple of observations:
1) I can't tell why the threads all try to marshal. Possibly the object is
marked as Single threaded and not Apartment threaded.
2) Calling Sleep() is not a good thing to do, generally speaking, in a
Server side app. There are a very few times when it is OK, but this is not
one of them.
Pat
"Thorsten Jakobsson" <thorsten@axiell.se> wrote in message
news:%234$no0OZEHA.3128@TK2MSFTNGP09.phx.gbl...
> > > You can also use IIS State to capture the state of the w3wp.exe during
> the
> > > "hang" and please post the log here.
> > We will try to use IIS State and post the log tomorrow. The server in
> > question
> > is not available today, so we will do the logging when it is not
occupied.
>
> Hello again, we have now captured the state of the w3wp.exe during the
> "hang". It is attached to this message.
>
> Sincerely,
> Thorsten Jakobsson
>
> "Thorsten Jakobsson" <thorsten@axiell.se> skrev i meddelandet
> news:%23FxASo0YEHA.3476@tk2msftngp13.phx.gbl...
> > Thanks for the answer.
> > > Is this application running in "low isolation" when running in IIS5
> > > Compatibility Mode?
> > It is running in "medium isolation" in IIS5 Compatibility Mode.
> >
> > > What recycling options did you configure for IIS6 Worker Process
> Isolation
> > > Mode?
> > The default recycling options are used.
> >
> > > You can also use IIS State to capture the state of the w3wp.exe during
> the
> > > "hang" and please post the log here.
> > We will try to use IIS State and post the log tomorrow. The server in
> > question
> > is not available today, so we will do the logging when it is not
occupied.
> >
> > /Thorsten
> >
> > "David Wang [Msft]" <someone@online.microsoft.com> skrev i meddelandet
> > news:OG65uB0YEHA.2520@TK2MSFTNGP12.phx.gbl...
> > > If it works on IIS6 set in IIS5 Isolation mode, then the problem is
> likely
> > > NOT with IIS6 but rather with how your application handles the
> difference
> > in
> > > process model between IIS5 Compatibility Mode and IIS6 Worker Process
> > > Isolation Mode. IIS6 runs nearly the same server core for IIS5
> Isolation
> > > Mode, including exactly the same ASP engine, so we know IIS6 works
with
> > your
> > > application.
> > >
> > > Is this application running in "low isolation" when running in IIS5
> > > Compatibility Mode?
> > > What recycling options did you configure for IIS6 Worker Process
> Isolation
> > > Mode?
> > >
> > > You can also use IIS State to capture the state of the w3wp.exe during
> the
> > > "hang" and please post the log here.
> > > http://www.iisfaq.com/default.aspx?view=P197
> > >
> > > --
> > > //David
> > > IIS
> > > This posting is provided "AS IS" with no warranties, and confers no
> > rights.
> > > //
> > > "Thorsten Jakobsson" <thorsten@axiell.se> wrote in message
> > > news:OOyriazYEHA.2972@TK2MSFTNGP12.phx.gbl...
> > > Hello,
> > > we have a problem with an application that hangs after some time in
> > IIS6.
> > > The application worked in IIS5 and also works in IIS6 if we set IIS5
> > > isolation mode.
> > >
> > > Some customers use other applications, so we can not use IIS5
> isolation
> > > mode in IIS6.
> > >
> > > The application uses a VB6-DLL that is called from an ASP-page. The
> DLL
> > > communicates
> > > with another server using TCP/IP. We use the Microsoft Winsock Control
> 6.0
> > > for communication,
> > > MSWINSCK.OCX. We used our own TCP/IP ocx before, but got the same
> problem
> > as
> > > with MS Winsock Control.
> > >
> > > If we remove the tcp/ip-code it does not hang, but we need of course
> the
> > > communication code.
> > > When we test with the Microsoft Webapplication Stress Tool, we get the
> > > problem
> > > after 700 - 1500 calls to the asp-page. The number of calls before it
> > hangs,
> > > varies.
> > > In order to find the problem, we have tried to only use the code that
> does
> > > Connect, exchange a
> > > little data and Close. Still hangs.
> > > Is there a problem with winsock communication in IIS6? Or is there a
> > > problem with
> > > number of open files, or calling DLL/OCXs we cannot figure out where
the
> > > problem is.
> > >
> > > Sincerely,
> > > Thorsten Jakobsson
> > > Axiell Bibliotek
> > >
> > >
> > >
> >
> >
>
>
>
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