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Thread: limit number of child processes

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  1. #1
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    Default limit number of child processes

    hi there!

    i want to install zimbra on my server.
    on my test-system i saw a lot of child processes of spamassassin, amavis, clamav and all the other components.

    well on my real system there will be only 4-5 users.
    so this is gonna be overkill

    how can i limit the number of processes of all components to 1-3?

    thanks in advance

    bye

  2. #2
    phoenix is offline Zimbra Consultant & Moderator
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    Hi

    Welcome to the forums.

    I don't think you'll notice any degradation on your system, are you having any problem after installing Zimbra? Does your server meet the minimum specs?
    Regards


    Bill


    Acompli: A new adventure for Co-Founder KevinH.

  3. #3
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    no it doesn't meet the minimum specs.

    it is a p3 800mhz with 256mb ram.
    zimbra slows down my system extremely. no chance to start any other services.

    so u don't think the system load will be decreased by limiting the child processes to 1-3?

  4. #4
    phoenix is offline Zimbra Consultant & Moderator
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    No, I don't think the number of processes is the problem it would be the amount of RAM that's way too low. I'm not an expert on tuning Zimbra or linux, maybe one one of the zimbra guys might have something that may help.
    Regards


    Bill


    Acompli: A new adventure for Co-Founder KevinH.

  5. #5
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    ok.

    i allready removed zimbra-logger, zimbra-spell and zimbra-snmp.

    any other tuning ideas?

  6. #6
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    Quote Originally Posted by philkry
    ok.

    i allready removed zimbra-logger, zimbra-spell and zimbra-snmp.

    any other tuning ideas?
    I have a PII 350 Mhz with 768 MB of RAM with Fedora Core 3.
    On that system I have VMware Server with 400 MB Ram with Fedora Core 4 with Zimbra. The only thing I did was tune how often the logger runs (crontab).

    So as far as I can tell the main issue you have is the amount memory.

  7. #7
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    edit amavisd.conf.in, cut down max_processes to 2 or 3 (NOT 1 - that'll kill mail delivery)

    edit /opt/zimbra/postfix/conf/master.cf, look for the smtp-amavis line - cut the 10 on that line down to whatever max_processes for amavis is set to.

    Cut down zimbraLmtpNumThreads to a lower value

    man 5 postconf - many throttling options there.

    Make sure the logger stuff is gone from the crontab, too.

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