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IIS hangs

Discussion in 'Plesk for Windows - 8.x and Older' started by ldejager, Apr 30, 2007.

  1. ldejager

    ldejager Guest

    0
     
    Hi,

    We have a Plesk 7.5.6 server running on Windows 2003 server (web ed).

    Every now and then (couple of days) IIS hangs and no matter what I do, it will not come back up unless I reboot the whole server.

    I have tried restarting IIS several times when this happens. Stopping and starting the application pools ... recycling them... None of this works to get IIS back up.

    I have installed Debugdiag and collected a few dumps (application pools were monitored).

    =======
    WARNING - DebugDiag was unable to locate debug symbols for hotlinkprot.dll, so the information below may be incomplete.

    Detected possible blocking or leaked critical section at hotlinkprot!TerminateFilter+3b238 owned by thread 3 in w3wp.exe__plesk(default)(pool)__PID__7472__Date__04_30_2007__Time_12_06_09AM__586__IIS Hang Dump.dmp

    Impact of this lock

    12.50% of threads blocked


    (Threads 2 4 5 60 63 65 66 67 70)


    The following functions are trying to enter this critical section

    hotlinkprot!TerminateFilter+6723


    The following module(s) are involved with this critical section

    D:\Program Files\SWsoft\Plesk\isapi\hotlinkprot.dll



    Locked critical section report
    Critical Section hotlinkprot!TerminateFilter+3b238
    Lock State Locked
    Lock Count 9
    Recursion Count 1
    Entry Count 0
    Contention Count 978
    Spin Count 0
    Owner Thread 3
    Owner Thread System ID 3608





    Thread report

    Thread 0 - System ID 2960
    Entry point w3wp!wmainCRTStartup
    Create time 29/04/2007 01:49:39
    Time spent in user mode 0 Days 0:0:0.31
    Time spent in kernel mode 0 Days 0:0:0.46




    Function Source
    ntdll!KiFastSystemCallRet
    ntdll!NtWaitForSingleObject+c
    kernel32!WaitForSingleObjectEx+ac
    kernel32!WaitForSingleObject+12
    w3dt!WP_CONTEXT::RunMainThreadLoop+10
    w3dt!UlAtqStartListen+2d
    w3core!W3_SERVER::StartListen+bd
    w3core!UlW3Start+26e
    w3wp!wmain+22a
    w3wp!wmainCRTStartup+12b
    kernel32!BaseProcessStart+23

    w3wp.exe__plesk(default)(2.0)(pool)__PID__3676__Date__04_30_2007__Time_12_06_23AM__977__IIS
    Hang Dump.dmp
    w3wp.exe__plesk(default)(pool)__PID__7472__Date__04_30_2007__Time_12_06_41AM__430__IIS Hang Dump.dmp

    Thread 3 - System ID 7580
    Entry point w3tp!THREAD_MANAGER::ThreadManagerThread
    Create time 29/04/2007 06:18:08
    Time spent in user mode 0 Days 0:0:32.265
    Time spent in kernel mode 0 Days 0:0:8.921




    This thread is calling an ISAPI Filter hotlinkprot



    Function Source
    ntdll!KiFastSystemCallRet
    ntdll!NtReadFile+c
    kernel32!ReadFile+16c
    hotlinkprot!TerminateFilter+8184
    hotlinkprot!TerminateFilter+6776
    hotlinkprot!TerminateFilter+3148
    w3core!W3_FILTER_CONNECTION_CONTEXT::AllocateFilterMemory+39

    =====

    Does anyone know what could be causing this behaviour? We are about to upgrade to 8.1.1 but waiting for the latest build of migration manager.

    Any information or pointers much appreciated.

    Regards,
     
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