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purge_dead_comet_files , high disk i/o usage

Discussion in 'General Discussion' started by postcd, May 17, 2014.

  1. postcd

    postcd Well-Known Member

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    Hello,

    i have access to host openvz server on which is hosted openvz VPS with cpanel/whm.

    I found server has high %wa value of the processor waiting.

    so i did iotop -a

    and found that most consuming i/o process can be purge_dead_comet_files ?

    K74RE.jpg

    i found relation to cpanel when googled. Please any idea how to examine, decrease such i/o load? Thank you
     
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  2. vanessa

    vanessa Well-Known Member
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    This script simply deletes stale files from /root/.cpanel/comet, but I fail to see how this script would cause high IO. You said this was the most consuming i/o process, but "most consuming" doesn't necessarily mean "high consuming" or "over consuming". I suspect you're looking in the wrong place.
     
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  3. cPanelMichael

    cPanelMichael Forums Analyst
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    Hello :)

    You may want to use a command such as "sar -u" to view the disk I/O over the past couple of hours. The script you referenced does not constantly run, so it's likely to finish after a few minutes.

    Thank you.
     
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  4. postcd

    postcd Well-Known Member

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    i/o is like this:
     
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  5. vanessa

    vanessa Well-Known Member
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    That's nice, but really would not give US any indication what is causing it. It's just doubtful that it's the script in question.
     
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