SVCHOST.EXE (netsvcs) HIGH CPU

Discussion in 'Windows 7 Help and Support' started by Meetloaf13, Sep 21, 2009.

  1. Meetloaf13

    Meetloaf13 New Member

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    Hello all,

    Receiving very little help on this on other forums I frequent, I thought I'd try here. I hope all of this information does not overwhelm.

    Here it goes:
    Hello,

    The past couple days I've noticed SVCHOST.EXE start going +50 CPU. For the most part it is sustained. I have linked a screenshot of the services that are running under this instance. I am running Win 7 RC. Right now it's not at a 'sustained' 50 CPU like it was last night, but every 3 or 4 seconds, it pops back up to 50 and then down again a few second later, and iterates like that.

    I just did a full Avira AntiVir scan with updated signatures, nothing found. I also run Comodo Firewall with Defense+.

    [​IMG]

    I am looking at the "threads" of the svhost.exe, and it appears that the culprit is ntdll.dll!RtlValidateHeap+0x110 (there are 12 instances, each of which well have over 200,000,000,000 cycles after about 10 minutes of booting up; SCREENIE BELOW).
    The stack for one of these threads is this:
    ntoskrnl.exe!KeRemoveQueueEx+0x9da
    ntoskrnl.exe!KeWaitForMutexObject+0x7c9
    ntoskrnl.exe!KeWaitForMutexObject+0x19f
    ntoskrnl.exe!PoStartNextPowerIrp+0x3a4
    ntoskrnl.exe!IoGetSfioStreamIdentifier+0x7ad
    ntoskrnl.exe!KiCheckForKernelApcDelivery+0x25
    ntoskrnl.exe!IoGetConfigurationInformation+0x32b57

    Here's the stack of another of the threads:
    ntoskrnl.exe!KeRemoveQueueEx+0x9da
    ntoskrnl.exe!memset+0x60e
    ntoskrnl.exe!CcScheduleReadAhead+0x710
    ntoskrnl.exe!RtlEnumerateEntryHashTable+0x311
    ntdll.dll!NtOpenKeyEx+0xa
    kernel32.dll!LocalAlloc+0x222
    kernel32.dll!RegOpenKeyExW+0x153
    kernel32.dll!RegOpenKeyExW+0x1d
    ADVAPI32.dll!RegOpenKeyExW+0x13

    [​IMG]


    I've tried a Google, but couldn't find anything conclusive. Curious if anyone may know what's up off the top of their head.

    Thanks!
     
  2. Tepid

    Tepid New Member

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  3. Meetloaf13

    Meetloaf13 New Member

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    The second screenshot is from said Process Explorer =\
     
  4. Tepid

    Tepid New Member

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    Ok,, see this,, if you haven't already.
    But i think it might be easier to go back to a previous restore point, start uninstalling recently installed programs, or ultimately reload the OS and keep track of what is installed,, programs, Updates, etc. to see if the problem starts again.
     
  5. Meetloaf13

    Meetloaf13 New Member

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    That was my backup plan...I'm no stranger to clean installs, but I was hoping for a quicker solution =]

    I'll wait it out for a few more days and see if anyone has a clue.

    Thanks
     

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