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How to tell what's causing CPU spikes?

Jeff x

Since updating to 9.508-10, I get CPU usage spikes at intervals. I'm thinking this may be a bug which is causing a service to restart but I haven't found anything yet.

The image below shows CPU usage before and after the update (around 09:30):

 

I've viewed all of the logs but I haven't been able to identify what's causing the spikes.

Any suggestions?



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  • 0 in reply to BAlfson

    Bob, if only my educated guesses were as good as yours ;-)

    Below is before and after screen caps of the fresh install:

    Before:

     

    After:

    --------------------------------------------------------------------
    Sophos UTM 9.719-3 - Home User
    Virtual machine on Dell Optiplex 3070
    i3-9100 @ 3.60 GHz, 16 GB RAM
    --------------------------------------------------------------------

  • 0 in reply to Huy Vu

    Huy Vu said:

    Hi Jeff,

    I think you should console to UTM (ssh, telnet), log on UTM then check cpu use with command: top

    On screen, you can see service are running on system. From that, you know cause CPU spikes.

    Hope it can help you

     

    Thanks for the suggestion. I already did that but I wasn't able to pin down the cause from what I was seeing on the screen.

    --------------------------------------------------------------------
    Sophos UTM 9.719-3 - Home User
    Virtual machine on Dell Optiplex 3070
    i3-9100 @ 3.60 GHz, 16 GB RAM
    --------------------------------------------------------------------

  • 0 in reply to Jeff x

    Thanks for being the guinea pig, Jeff - we all learned something here!

    Cheers - Bob

     
    Sophos UTM Community Moderator
    Sophos Certified Architect - UTM
    Sophos Certified Engineer - XG
    Gold Solution Partner since 2005
    MediaSoft, Inc. USA
  • 0 in reply to BAlfson

    I'm still on 9.506.  Will probably wait til the end of the month before upgrading.  Will image the utm vm before I do anything.  Backup files are nice, but being able to restore to an exact prior state is even better.  Unless backup separately somehow, I don't believe log files are part of any backup file.

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