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Thread: couldn't kill stuck convertd processes

  1. #1
    mikiso is offline Active Member
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    Post couldn't kill stuck convertd processes

    Hi,

    Our customer observed that the convertd server process (/opt/zimbra/java/bin/java com.zimbra.cs.convertd.TransformationServer)
    is consuming a lot of CPU from this morning.
    It consumes 90% of CPU so far.
    We know restarting mailboxd is a workaround for this case, however our customer
    want to minimize the impact to their service.

    I believe we can triage by restarting the convertd process,
    does anyone know how to restart it?
    Zimbra Admin Guide describes that "zmconvertctl restart" can do this, on the other hand,
    it seems zmconvertdmon script calls /opt/zimbra/libexec/zmconvertd instead.
    If we can restart the convertd server, what is the expected impact to the service?
    We think ZCS can't index the attachments and users can't view attahcments as html
    while restarting. Am I right about that?

    We've tried to kill the stuck kvoop processes, but those process become "defunct" and the convertd still consumes much CPU.

    ---Environment---
    ZCS NE 5.0.16 multi-server installation with convertd v1
    RHEL 5 64bit

    Regards,

  2. #2
    phoenix is online now Zimbra Consultant & Moderator
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    Quote Originally Posted by mikiso View Post
    ZCS NE 5.0.16 multi-server installation with convertd v1
    RHEL 5 64bit
    Try upgrading Convertd to version 2.
    Regards


    Bill


    Acompli: A new adventure for Co-Founder KevinH.

  3. #3
    mikiso is offline Active Member
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    Yes, I know upgrade to convertd v2 is the ultimate fix to the issue,
    however I need to know how to triage the issue.

    Thanks to Zimbra support , it turned out to be that the problem is that
    convertdv1 was closely attached to the mailboxd server and attempt
    to stop the convertd server will fail.

    Still, I assume it could be useful to kill the convertd server process,
    and then start up new convertd server as /opt/zimbra/libexec/zmconvertdmon
    script does.
    This script kills the stray java process of the convertd server and stray kvoop process when pinging to
    the convertd process fails , and then starts up new convertd server...

  4. #4
    phoenix is online now Zimbra Consultant & Moderator
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    Quote Originally Posted by mikiso View Post
    Yes, I know upgrade to convertd v2 is the ultimate fix to the issue,...
    It would have been useful to tell us you knew that in the first place.
    Regards


    Bill


    Acompli: A new adventure for Co-Founder KevinH.

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