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Sprel.exe High Utilization

    Question

  • Hi

    My FAST server is constantly running with high processor utilizationon (85-95%) sprel.exe. Appears to be working fine just running pretty much pinned. Anyone have any ideas?

     

    Thanks

    Friday, February 04, 2011 10:00 PM

Answers

  • What if you restart it?

    nctrl stop sprel

    nctrl start sprel

    And check the log files in: C:\FASTSearch\var\log\sprel

    Regards,
    Mikael Svenson


    Search Enthusiast - MCTS SharePoint/WCF4/ASP.Net4
    http://techmikael.blogspot.com/ - http://www.comperiosearch.com/
    • Marked as answer by MossMan2010 Tuesday, February 08, 2011 3:28 PM
    Tuesday, February 08, 2011 12:49 PM
  • Thanks for your reply Mikael

    I tried that with the same results -- however in checking the log I noticed that the sprel_proc.log was unusally large (5Gb). I completely stopped FAST services and deleted the log file then restarted and allowed it to recreate the the log.

    All seems to be fine now :)

    Thanks for your assitance Mikael - much appreciated.

    Tuesday, February 08, 2011 3:27 PM

All replies

  • Use spreladmin.exe to check the status and configuration of the click-through log analysis engine. Default it runs once a day, but it shouldn´t run all the time like you describe.

    You can try to run "spreladmin AbortProcessing" or "spreladmin PauseProcessing" and see if the CPU drops.

    Regards,
    Mikael Svenson


    Search Enthusiast - MCTS SharePoint/WCF4/ASP.Net4
    http://techmikael.blogspot.com/ - http://www.comperiosearch.com/
    Sunday, February 06, 2011 7:31 PM
  • Hi Mikael

     

    I tried your suggestion both AbortProcessing or PauseProcessing have no effect on sprel.exe utilization -- still pinned at 90%. I did a ShowStatus and see the foloowing which may provide some insight. It seem to be stuck on spcidcollasper

     

    Do you have any insight on this?

     

    Thanks Mikael

     

    ShowStatus:

    System:
        Overall status   :  Running
        Error status     :  NOERROR
        Split factor     :  4
        End factor       :  1

    Processing:
        Status           :  running
        Makefile         :  spcidcollapser
        Progress         :  0 %
        Generation       :  1

     

    Monday, February 07, 2011 6:31 PM
  • What if you restart it?

    nctrl stop sprel

    nctrl start sprel

    And check the log files in: C:\FASTSearch\var\log\sprel

    Regards,
    Mikael Svenson


    Search Enthusiast - MCTS SharePoint/WCF4/ASP.Net4
    http://techmikael.blogspot.com/ - http://www.comperiosearch.com/
    • Marked as answer by MossMan2010 Tuesday, February 08, 2011 3:28 PM
    Tuesday, February 08, 2011 12:49 PM
  • Thanks for your reply Mikael

    I tried that with the same results -- however in checking the log I noticed that the sprel_proc.log was unusally large (5Gb). I completely stopped FAST services and deleted the log file then restarted and allowed it to recreate the the log.

    All seems to be fine now :)

    Thanks for your assitance Mikael - much appreciated.

    Tuesday, February 08, 2011 3:27 PM
  • Hi,

    My sprel.exe cpu utilization is 50 to 60 % but some times rarly  it goes to 90%

    I have tried all the above three options :

    1. abortprocessing of apreladmin( if i use this command it will in the status of stopping but it will not stop), May i know how much time it will take to stop.

    2. sprel_proc.log

    3. nctrl stop sprel

    nctrl start sprel

    Nothing  changed my aprel.exe

    please provide any other things which i need to consider ?

    Thursday, February 21, 2013 5:00 AM
  • Hi,

    Is it constant on 50-60, or does it go down at times? What kind of content are you indexing? SPrel is a high cpu component and it will use a lot of cpu when working. Remember that you can also distribute this component to multiple machines.

    Also, you can opt to turn SPrel off... which means clicks on results and links in/out to items will not give additional boost.

    Thanks,
    Mikael Svenson


    Search Enthusiast - SharePoint MVP/MCT/MCPD - If you find an answer useful, please up-vote it.
    http://techmikael.blogspot.com/
    Author of Working with FAST Search Server 2010 for SharePoint

    Thursday, February 21, 2013 7:24 AM