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Thread: Zimbra 8.0.4 processes consumes too much cpu time and web UI slower.

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  1. #1
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    Default Zimbra 8.0.4 processes consumes too much cpu time and web UI slower.

    Hi!

    Last night im upgraded our company zimbra server from 8.0.3 to 8.0.4.
    The upgrade was completed without any error in no time.
    However i notice that the 'java' process eat the cpu much more like in the previous version.
    The zmlogger process also eat 100% cpu time after a while, plus the web UI noticable slower, for example after i click to a mail folder the browser unresponsive for a few seconds.
    Im completely disabled the logger feature, this can help a little but the web UI still slower than the 8.0.3 version.
    Also our users report that the new version slower than the previous.

    Anyone have a new experience with this new zimbra version?
    Thanks!

  2. #2
    phoenix is offline Zimbra Consultant & Moderator
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    Quote Originally Posted by vadonka View Post
    Anyone have a new experience with this new zimbra version?
    Yes, I installed this earlier this week without problems and it's noticeably faster (the web UI) and with no change in cpu usage or load on my system.

    You haven't really given much information about your configuration nor the number of users and whether they're using the web UI or a fat client etc., etc. How about giving some useful diagnostic information about the problem?
    Regards


    Bill


    Acompli: A new adventure for Co-Founder KevinH.

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    our server have ~2000 user, 300-400 active in the same time.
    im using a dl370 g6 server with 2 xeon (hw virt supported) 3.2ghz processor (16 logical cpu), 96GB ram, and a couple of 1TB SAS hdd in raid5 array running with the ESXi 5.1
    the zimbra virtual machine have 8 logical cpu and 8GB ram and 2TB vmdk, swappiness is 0.
    the iotop said the IO stress is very low, but the cpu load high referring to the top output.
    the filesystem is ext4 with noatime mount option.

    this setup was working great with the zimbra 8.0.3.
    im reverted to the 8.0.3 (from a VM snapshot), the webui faster again, then i try to upgrade again with the 8.0.4
    the result is the same, the whole system slowed down.

    currently im completely disabled the logger feature, and reduced the amavis max servers to 3.
    this can help, its working properly with this modification. however the 8.0.3 version doesn't have such this issue.

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    So what does it say is taking all the CPU?
    Quanah Gibson-Mount
    Server Architect
    Zimbra, Inc
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    Zimbra :: the leader in open source messaging and collaboration

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    Quote Originally Posted by quanah View Post
    So what does it say is taking all the CPU?
    the 'java' process take a significant cpu time and raise the system load higher than 10.0

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    ZCS has multiple Java processes. Saying "java" provides no useful information. Please provide the exact java command taking CPU.
    Quanah Gibson-Mount
    Server Architect
    Zimbra, Inc
    --------------------
    Zimbra :: the leader in open source messaging and collaboration

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    Hello, after reading all related posts regarding "cpu high load after upgrade", and of course with no results, I realised there is another process, started by root, keytool, also eating too much from cpu. I don't know if is the same for you, but in my case did solve the problem, so I think I don't hurt anybody if share : I've reinstalled certificates and everything is working fine now....I am enjoying a 0.10 load on my server now

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