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Exim -spinning zombies- increasing load avg. after nightly update.

Discussion in 'General Discussion' started by bmcpanel, Apr 8, 2003.

  1. bmcpanel

    bmcpanel Well-Known Member

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    I woke up this morning to find that two of my servers are acting up with higher than average load average.

    After I investigated, I found several 8-10 zombie processes for exim was happening constantly.

    Ex.
    14220? S 0:00 /usr/local/apache/bin/httpd -DSSL
    14224 ? Z 0:00 [httpd <defunct>]
    14227 ? S 0:00 /usr/local/apache/bin/httpd -DSSL
    14230 ? Z 0:00 [httpd <defunct>]
    14231 ? Z 0:00 [httpd <defunct>]


    I turned exim off and the server load average came down to normal. I restarted exim, and it began spinning zombies again and the load average went back up to 7.00 - 12.00.

    This happend on 2 separate web servers which I have Cpanel on. The problem began after the nightly update this morning.

    Thus, I am wondering if exim was updated last night and if so, what I can do about this problem.

    It is strange how the same exact problem began happening on 2 separate web servers near the same time after the update.
     
  2. bmcpanel

    bmcpanel Well-Known Member

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    This is still happening and a major problem. Anyone else have this happen to them?
     
  3. sexy_guy

    sexy_guy Well-Known Member

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    I am, at various times throughout the day i will see every httpd process in <defunct> mode. My server processes go throught the roof and dissappear after i restart apache. Its nuts!

    See my messages, http://forums.cpanel.net/showthread.php?s=&threadid=8593
     
    #3 sexy_guy, Apr 9, 2003
    Last edited: Apr 9, 2003
  4. Kiwi

    Kiwi Well-Known Member

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    We're having the exact same thing, on all servers.
     
  5. bmcpanel

    bmcpanel Well-Known Member

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    For some reason, Exim keeps spinning Zombie processes. I see 10-15 zombies from Exim from time to time and the server load shoots up.

    I found them using the ps command...

    ps ax
     
  6. bmcpanel

    bmcpanel Well-Known Member

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    I had posted the wrong processes. A defunct zombie exim process looks like the following....

    7777 ? S 0:00 /usr/local/apache/bin/httpd -DSSL
    27784 ? S 0:00 /usr/local/apache/bin/httpd -DSSL
    27826 ? Z 0:00 [exim <defunct>]
    27827 ? Z 0:00 [exim <defunct>]
     
  7. cPanelNick

    cPanelNick Administrator
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    Can you provide a pstree with the pids of the zombies to see where they are children of ?

    Note: if there are exim process with -bs someone is doing batched smtp

    exim processes with -bd are smtp connections
     
  8. jamesbond

    jamesbond Well-Known Member

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    bdraco, e-mails sent from php forms to external e-mail addresses all end up sitting in the mail queue.
    /var/log/exim_maillog shows smtp errors.

    This happens with all e-mail from php forms sent to off-server e-mail addresses.

    When I click on deliver in WHM mails are delivered promptly without any errors in /var/log/exim_maillog.

    Any idea what is going on?

    http://forums.cpanel.net/showthread.php?s=&threadid=8658
     
  9. LS_Drew

    LS_Drew Well-Known Member

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    We are also experiencing the zombie exims on all servers.

    I just set a cron to restart it every hour or so. That does the trick, but it's a bandaid fix.
     
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