2003 "Unable to allocate work item" event 2021

Discussion in 'Windows Server' started by Mike O., Oct 19, 2009.

  1. Mike O.

    Mike O. Guest

    We have two Windows 2003 x64 R2 Enterprise servers in a file server cluster.
    They're both running on HP DL360G6 servers that are about 3 months old and
    are accessing an EMC CX700 array with QLogic fiber cards. The servers are up
    to date with the Windows patches and the various HP drivers.

    Over the last few months, we've been seeing some of the "2021" event log
    warnings from the "SRV" with the message "the server was unable to allocate a
    work item 1 times in the last 60 seconds". Occasionally, it's "...2
    times...", but I've not seen anything higher than that. They've been fairly
    frequent, but we've not noticed any performance issues.

    However, the last week or so we've been getting reports that the server is
    "slow". We checked the logs, and we're seeing a lot more of those warnings
    (pretty much every minute).

    Over this last weekend we did a failover to the other node. We're still
    seeing the warnings, but it looks like the performance is back up.

    I've done some searching on the net, and found some info about adjusting the
    registry settings regarding memory, but the information I've found seems to
    be for the 32 bit versions of Windows, not x64. Since I know the 64 bit
    version handles the memory differently, I'm hesitent to apply settings for
    the 32 bit memory managment system.

    Any suggestions would be appreciated.
     
    Mike O., Oct 19, 2009
    #1
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  2. We have two Windows 2003 x64 R2 Enterprise servers in a file server cluster.
    Seems to be a McAfee thing. Check out what other have said here:
    http://www.eventid.net/display.asp?eventid=2021&eventno=881&source=Srv&phase=1

    - Thee Chicago Wolf [MVP]
     
    Thee Chicago Wolf [MVP], Oct 19, 2009
    #2
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  3. In these situations I normally get Microsoft support involved to further
    investigate 2021 events
    something could be leaking, and you really want to know what that is, prior
    to tweaking anything !

    rgds,
    Edwin.
     
    Edwin vMierlo [MVP], Oct 21, 2009
    #3
  4. Hi Mike,

    Wow 1st time I see this on x64 machines. Probably a leaky driver. Try
    troubleshooting with poolmon.exe. Or update drivers like the HBA, Antivirus,
    backupagents.

    Regards,

    Patrick Mandemaker
     
    Patrick Mandemaker, Nov 1, 2009
    #4
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