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Fluctuating agent inventory causes poor Engine Collect Task performance on versions r12.9 and r14.0.

  • 1.  Fluctuating agent inventory causes poor Engine Collect Task performance on versions r12.9 and r14.0.

    Posted 11-16-2016 12:28 PM

    Hello Everyone,

     

    I'm encouraging all ITCM Administrators to check out TEC1147194 on support.ca.com.  It addresses an AM agent inventory issue that may be degrading your collect engine performance on r12.9 and r14.0 installations.  As the patches have not yet been published to the support site, you'll need to open a ticket with CA Support to request them--

     

    r14.0 GA- T5IZ342 (System update inv collect timeou)

    r12.9 GA- T5IZ292 (Inventory collect timeout on age)

     

    Note: The problem has already been addressed in our upcoming r14.0 SP1 release.

     

    TEC1147194 provides all the details.

     

    -Brian



  • 2.  Re: Fluctuating agent inventory causes poor Engine Collect Task performance on versions r12.9 and r14.0.

    Posted 11-16-2016 01:06 PM

    What, no pre-built WinOffline package attached this time? I was so impressed when you included that on your previous update, you’re slipping my friend! (JK)

     

    Steve McCormick, ITIL

    CA Technologies

    Principal Services Consultant

    Tel: +1-731-676-4223

    Stephen.McCormick@ca.com

    <mailto:Stephen.McCormick@ca.com>



  • 3.  Re: Fluctuating agent inventory causes poor Engine Collect Task performance on versions r12.9 and r14.0.

    Posted 11-16-2016 01:22 PM

    Done

     

    And for everyone's knowledge, the JCL file within the WinOffline package includes an additional tag called, "VERSIONCHECK".  For example, from WinOffline-T5IZ342-System-Update-Inv-r14.0, the JCL file has--

     

    --------------------------------------

    PLATFORM:WINDOWS
    PRODUCT:DTSVMG
    COMPONENT:DTSVMG-DTSVMG
    SUPERSEDE:
    RELEASE:R14
    GENLEVEL:GA
    VERSION:20010222
    PREREQS:
    MPREREQS:
    COREQS:
    MCOREQS:
    VERSIONCHECK:14.0.0.199

     

    FILE:bin\amAdvInvNT.exe

    --------------------------------------

     

    This additional tag that WinOffline supports (ApplyPTF does not), will prevent WinOffline from applying the patch to the wrong version of the agent.  This is helpful if you have a mixed environment of agent versions, which is not uncommon.

     

    It also eliminates the Administrator from having to do the homework on which agents should be targeted by the software package, and which shouldn't .



  • 4.  Re: Fluctuating agent inventory causes poor Engine Collect Task performance on versions r12.9 and r14.0.

    Posted 11-23-2016 06:07 AM

    This has been a problem in the last 3-4 releases. Caused us a lot of headaches as we have many queries to check for missing window patches based on these patches being listed in the system inventory. What happens without these TFs is that the inventory times out and the .INV file thats uploaded form the agent does not contain any patch info and hence the system Patches node in the inventory on the DSM explorer gets emptied and all systems then report with no patches

     

    We also had the following for this exact issue:

    • 12.8.- T5IZ252
    • 12.8 FP1 -T5IZ259 

     

    not 100% convinced this has resolved the issue as I have still seen it with the TFs installed 



  • 5.  Re: Fluctuating agent inventory causes poor Engine Collect Task performance on versions r12.9 and r14.0.

    Posted 11-24-2016 04:42 AM

    We got a fix T5IZ310 for 12.9, where we can disable the collection of the system updates. We are anyway not interested in these data.

    I suppose the other fixes work in a different way?



  • 6.  Re: Fluctuating agent inventory causes poor Engine Collect Task performance on versions r12.9 and r14.0.

    Posted 11-28-2016 12:40 PM

    Hi lza,

     

    The fixes I'm referencing are not for disabling the report of Windows System Updates.  The fixes address a timeout issue, with how long the AM agent should wait for the WMI query to return, when requesting this list of system updates.

     

    There are some 350+ patches for Windows 7 SP1 these days.  The AM Agent was essentially at a critical point where sometimes the WMI query would return just within the expected timeout, and sometimes not, causing the agent to delete the full list in one report, and resend a complete list in another report-- which is rather expensive.  The complete list of Windows System Patches can be ~80-100k, which is a significant chunk of the AM Agent inventory, and a significant amount of information for the Engine processing the Collect Task to update in the database.

     

    With the patch applied to the agent, the AM agent should now be consistently pulling the System Update list, and sending a delta report for any changes (i.e. a new Windows KB is applied).  There may be some short-term overhead when rolling out these patches to the Windows Agents, as any Agent currently not reporting System Updates (due to the timeout issue), will now start reporting this data.  But after processing their first report, only delta changes should follow.

     

    -Brian



  • 7.  Re: Fluctuating agent inventory causes poor Engine Collect Task performance on versions r12.9 and r14.0.

    Posted 11-29-2016 04:40 AM

    Hi Brian

     

    Thank you for the clarification!

     

    Leandro



  • 8.  Re: Fluctuating agent inventory causes poor Engine Collect Task performance on versions r12.9 and r14.0.

    Posted 02-02-2017 11:56 AM

    This really needs to be bundled into agents going forward or a parameter to set the timeout added or possible a separate module for operating system updates/patch collection. The path inventory is vital to us and I'm sure other customer. is the custom WBEM inventory subject to the same timoute? 



  • 9.  Re: Fluctuating agent inventory causes poor Engine Collect Task performance on versions r12.9 and r14.0.

    Posted 02-02-2017 01:16 PM

    Hi Shocko,

     

    The fix was merged into ITCM r14 SP1.. so the new agents no longer have this issue.  I'm unaware of the specific details of how it was fixed, but my impression was the previous timeout was unreasonably short given how much more information is stored/available these days in WBEM.  I'm not aware of any configurable value for the timeout, so I'm assuming SE has increased that timeout to some modest/reasonable value.

     

    Regards,

    Brian Fontana, CA Support



  • 10.  Re: Fluctuating agent inventory causes poor Engine Collect Task performance on versions r12.9 and r14.0.

    Posted 02-02-2017 03:28 PM

    Thanks Brian! I don't see any explicit mention of it though at Test Fixes with 14.0.1 - CA Client Automation - 14.0 - CA Technologies Documentation 



  • 11.  Re: Fluctuating agent inventory causes poor Engine Collect Task performance on versions r12.9 and r14.0.

    Posted 05-18-2017 07:29 AM

    Getting a few instances of this on R14 SP1. opening a support case now.