win 7 high cpu usage on 2 services help


  1. frglja
    Posts : 4
    win7 x64
       New #1

    win 7 high cpu usage on 2 services help


    Hello.
    I need help with win 7 x64.
    I've isolated services and find that plugplay service and audioendpointbuilder started taking cpu always at the same time.
    When services weren't isolated with sc cmd i could only restart my pc bu some times problem showed again upon new start.

    After i've isolated 2 services my problem starts randomly and sometimes exits randomly but after some time starts again. Drivers are all up to date and some are selectively disabled like ati high definition audio.
    I've run sfc /scannow with no problems.
    Here are the procces explorer threads and their stacks if someone could help out.(also have set up symbols in proc ex)

    plugplay service

    TID ntdll.dll!EtwTraceMessageVa+0x130

    stack for TID
    ntoskrnl.exe!SeAccessCheckWithHint+0xb4a
    ntoskrnl.exe!IoGetRequestorProcess+0x250
    ntoskrnl.exe!ExfTryToWakePushLock+0x899
    ntoskrnl.exe!KeStackAttachProcess+0x117f
    ntoskrnl.exe!KeAcquireSpinLockAtDpcLevel+0x88d
    ntoskrnl.exe!KeRemoveQueueEx+0x301
    ntoskrnl.exe!MmCreateSection+0x92b
    ntoskrnl.exe!IoAllocateMdl+0x726
    ntoskrnl.exe!KeSynchronizeExecution+0x3a43
    ntdll.dll!ZwWaitForWorkViaWorkerFactory+0xa
    ntdll.dll!EtwTraceMessageVa+0x37b
    kernel32.dll!BaseThreadInitThunk+0xd
    ntdll.dll!RtlUserThreadStart+0x21


    audioendpointbuilder

    TID audiosrv.dll+0xf440

    stack for above TID
    ntoskrnl.exe!SeAccessCheckWithHint+0xb4a
    ntoskrnl.exe!KeAcquireSpinLockAtDpcLevel+0x682
    ntoskrnl.exe!KeWaitForMutexObject+0x19f
    ntoskrnl.exe!PsIsSystemProcess+0x68
    ntoskrnl.exe!KeStackAttachProcess+0x11b9
    ntoskrnl.exe!ObReferenceObjectByPointerWithTag+0x22b
    ntoskrnl.exe!KeSynchronizeExecution+0x38c8
    ntdll.dll!ZwOpenKeyEx+0xa
    kernel32.dll!BaseThreadInitThunk+0x8be
    kernel32.dll!NlsGetCacheUpdateCount+0x120
    kernel32.dll!BaseThreadInitThunk+0x51a
    kernel32.dll!RegOpenKeyExW+0x1d
    MMDevAPI.DLL!Ordinal5+0xc10
    MMDevAPI.DLL!Ordinal5+0x7d8
    MMDevAPI.DLL!Ordinal5+0x220f
    MMDevAPI.DLL!Ordinal5+0x1fcb
    MMDevAPI.DLL!Ordinal5+0x33c1
    MMDevAPI.DLL!Ordinal5+0x38ef
    MMDevAPI.DLL!Ordinal5+0x28bd
    MMDevAPI.DLL!DllGetClassObject+0x96f
    MMDevAPI.DLL!Ordinal5+0x4420
    audiosrv.dll!ServiceMain+0x5206
    audiosrv.dll!ServiceMain+0x3d28
    audiosrv.dll!ServiceMain+0x173c
    audiosrv.dll!ServiceMain+0x12b6
    audiosrv.dll!ServiceMain+0x29a3c
    audiosrv.dll!ServiceMain+0x234ca
    audiosrv.dll+0xf4a9
    kernel32.dll!BaseThreadInitThunk+0xd
    ntdll.dll!RtlUserThreadStart+0x21

    Thinking of doing complete reinstall?

    And here are screenshots before isolation :
    Last edited by frglja; 29 Jan 2010 at 16:26. Reason: adding screenshots
      My Computer
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  3. MDY
    Posts : 2
    Windows 7 Ultimate x64
       New #2

    same problem


    any solution so far?
    I'm found the same issue; trying to find a fix atm
      My Computer
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  4. MDY
    Posts : 2
    Windows 7 Ultimate x64
       New #3

    It seems that cleaning the startup items worked for me.

    The CPU was at about 30% eaten by this ntdll.dll!EtwTraceMessageVa+0x130
    I noticed that after i turned off the internet connection the cpu went down, looking like an application trying to connect or update smth.

    I unchecked Adobe stuff in msconfig and after reboot the cpu cores are stable below 2-5% in idle mode.
      My Computer
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  6. frglja
    Posts : 4
    win7 x64
    Thread Starter
       New #4

    Sorry for not answering. My resolution was to disable integrated audio and buy new pci sound card. It was the VIA driver issue. My mainboard is ASUS M3N78-VM - (faulty win7 x64 drivers but working on xp32 & x64)
      My Computer
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