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Thread: Very HIGH CPU usage without any traffic :/

  1. #1
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    Default Very HIGH CPU usage without any traffic :/

    Hello administrators,

    From 2 days i got very strange issue, i never had this before.
    My local Zimbra server took 100 % of CPU from 2 days 24/7.

    I even try fsck but it doesn't solve my problem.


    First what i would like to show is output from nmon.
    I can't see there process what take almost all cpu. CPU Utilization show usage by system at 92 %.



    then i try with atop



    but no answer.

    Then i try with memory
    I know 2,5 gb is to small, but should work.


    And as you see, in swap 0 Mb - free 1,5 GB.

    Then i show load:


    It's very hight according, there is no "real load".


    I attach syslog and messages. Myself i can't find there problem.
    I really don't know what should i do.

    2 days before, everything work great. I don't do any changes.
    Attached Files Attached Files

  2. #2
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    Does it stay constantly > 90% and is zmgengraphs always running ? It would help if you were to let us know which version of ZCS you are running so please update your profile with the following output
    Code:
    su - zimbra
    zmcontrol -v

  3. #3
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    Please excuse me, i forgot add my version. I updated profile.

    My version:
    Release 5.0.16_GA_2921.UBUNTU8 UBUNTU8 FOSS edition

    with included security path.


    Answer for your question:
    zmgengraphs, no it show me different process right now:



    I had try reinstall kernel, but it won't help.

  4. #4
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    What happens if you restart ZCS ? What storage subsystem are you using ?

  5. #5
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    How many domains do you have ? Is it more than one ?

  6. #6
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    Quote Originally Posted by veronica View Post
    How many domains do you have ? Is it more than one ?
    I attached only something about 7 domain. (this is development server).


    At night i want reinstall this box.

    Moving ZCS to New Server - Zimbra :: Wiki

    Is this tutorial will be suitable for my version ?

  7. #7
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    Is this a physical or virtualised server ?

  8. #8
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    Fully vitalization by VBox. - I know this is not for production environment.



    But that's not foul of this, i have other servers and they are running without any troubles :/

    2 days past, this server doing great. But now.

    I think this might be connected with our problems in filesystem on host server. We doing fsck at all partition and everything is fine. On guest and on host.

    But i will try reinstall. Now im installing second box with Ubuntu 8.04 LTS. And we will see. May bye this will help.

  9. #9
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    Can you generate charts and see what has been the issue during the time.

    you need to run :-

    zmstat-chart -s /opt/zimbra/zmstat/<date> -d <destination directory for the files>

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