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Thread: CPU high usage

  1. #1
    trolo_vk is offline Active Member
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    Jun 2009
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    Slovakia - Czech republic
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    Default CPU high usage

    Hi,

    ZIMBRA running on my server:
    HW:
    CPU: model name : Intel(R) Core(TM)2 Quad CPU Q6600 @ 2.40GHz
    RAM: 8GB
    SWAP: 512MB
    software RAID 2x 600GB
    SW:
    XEN
    uname -a
    Linux IN-XEN1 2.6.26-2-xen-amd64 #1 SMP Wed Mar 10 00:29:48 UTC 2010 x86_64 GNU/Linux

    I created XEN machine for zimbra.
    OS: debian 5 (lenny) 64-bit
    CPU: all 4 core of CPU
    RAM: 5GB
    SWAP: 512MB

    here is usage my CPU...
    DAY
    cpu-day.png
    MONTH
    cpu-month.png

    i don't now why CPU usage is high.
    no users login in zimbra and cpu USAGE is high, too
    help me? thank you

  2. #2
    rosch is offline Special Member
    Join Date
    Sep 2010
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    Default

    roughly:
    idle CPU = (100 - systems CPU)%

    So high idle(blue) values means the CPU is mainly not working which means your system should be quite responsive.
    The upgrade shows a higher systems usage hence smaller idle values.
    --
    cheers

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