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  1. #1
    Join Date
    Jan 2007
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    584

    WHM's suspension cause high load

    Hi

    We have a Dual opteron 275+4G ram box.

    PHP4+EA+CentOS+Cpanel installed

    Normally, load is 2 as long as we do not perform any action on WHM

    However, whenever we create/suspend/terminate an account , load burst to 25 and then httpd goes down

    Admins say it is hardware issues, which does not sound right to me

    have you guys got any clues on this wield issue?

    cheers

  2. #2
    I've never seen that happen. You would have to post a copy of TOP output. Sounds to me like it might be iowait skyrocketing, and would be a hardware problem. What is the RAID setup (if any)

  3. #3
    Join Date
    Jan 2007
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    584
    here you go

    top - 09:58:31 up 10 days, 12:46, 1 user, load average: 2.23, 2.78, 3.24
    Tasks: 173 total, 1 running, 171 sleeping, 0 stopped, 1 zombie
    Cpu(s): 3.2%us, 1.9%sy, 9.9%ni, 80.8%id, 4.0%wa, 0.0%hi, 0.2%si, 0.0%st
    Mem: 4141628k total, 3476140k used, 665488k free, 116332k buffers
    Swap: 2096472k total, 88k used, 2096384k free, 2452932k cached

  4. #4
    I mean when the load is at 25

    Check this item - '4.0%wa'

  5. #5
    Join Date
    Jan 2007
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  6. #6
    My suspicion is a huge bottleneck in writing to the hard drive(s). Even a load of 2-3 on the server which is basicly doing nothing is suspicious that that is the case. Is it a RAID5?

  7. #7
    Join Date
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  8. #8
    Join Date
    Jan 2007
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    584

  9. #9
    Maybe try this and check the output:

    hdparm -tT /dev/sda

    It will do a basic hard drive test

    Example output:
    /dev/sda:
    Timing cached reads: 2972 MB in 2.00 seconds = 1486.97 MB/sec
    Timing buffered disk reads: 290 MB in 3.01 seconds = 96.30 MB/sec

  10. #10
    Join Date
    Jan 2007
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    584

  11. #11
    That's not too bad. But I've never seen that happen just by terminating an account.

    Maybe check the message log:

    tail -f /var/log/messages

    If you see a lot of hardware errors there's something wrong.

    Or rather than sit watching the log you could do this:

    grep error /var/log/messages

  12. #12
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  13. #13
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  14. #14
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  15. #15
    Maybe run /scripts/fixquotas but yes, the closer you keep WHM to stock, the easier. You can turn quotas off in WHM (I think) but no one will have a disc space limit.

    This post might help:
    http://forums.cpanel.net/showthread.php?t=67327
    But my servers all run fine with quotas being on /var partition.
    Last edited by page-zone; 03-17-2008 at 11:22 PM.

  16. #16
    Join Date
    Jan 2007
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    584

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