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what value ?

Discussion in 'General Discussion' started by marcus007, Nov 9, 2013.

  1. marcus007

    marcus007 Member

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    top - 01:40:27 up 6 min, 1 user, load average: 1.33, 1.56, 0.71
    Tasks: 150 total, 1 running, 149 sleeping, 0 stopped, 0 zombie
    Cpu(s): 0.0%us, 0.1%sy, 0.0%ni, 99.9%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
    Mem: 3089732k total, 1343940k used, 1745792k free, 33180k buffers
    Swap: 6289408k total, 0k used, 6289408k free, 775212k cached

    --------------------------------------------------------------------------------------
    why IO 100% it came to my server down.

    How I resolve it

    Thank you

    - - - Updated - - -

    iostat
    Linux 2.6.18-371.1.2.el5 (pingpong.ussserver.com) 11/10/2013

    avg-cpu: %user %nice %system %iowait %steal %idle
    0.87 0.01 0.29 8.40 0.00 90.42

    Device: tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn
    sda 24.44 1583.17 143.66 1897029 172144
    sda1 0.07 1.74 0.01 2082 10
    sda2 3.26 145.35 18.84 174170 22576
    sda3 0.25 5.48 1.44 6562 1720
    sda4 0.00 0.01 0.00 8 0
    sda5 13.84 1301.31 58.03 1559291 69538
    sda6 5.57 103.19 61.00 123643 73098
    sda7 0.03 1.36 0.00 1624 0
    sda8 1.40 24.36 4.34 29193 5202

    - - - Updated - - -

    top is normal
     
  2. quietFinn

    quietFinn Well-Known Member

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    I'm not sure what you are asking?

    "99.9%id" means the server is 99.9% idle.
     
  3. marcus007

    marcus007 Member

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    noc tell me . I/O stat high and it do server down

    I ask why it high
     
  4. ravi9

    ravi9 Well-Known Member

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    %id is the amount of time the CPU has been idle, that is, doing nothing.
    Is your server UP and running fine??
     
  5. fabin

    fabin Active Member

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    You have to watch for the %wa value to monitor IO wait ( which is next to %id ). If that value stays above 30%, then it is not a good sign and means poor performance of disk or some process is reading/writing too much data that the storage device.

    You can also use "iotop" command to get a list of processes that are causing the high IO.

    More details here Linux iotop: Check What’s Stressing And Increasing Load On Your Hard Disks
     
  6. marcus007

    marcus007 Member

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    thank you for every comment .
    I'm confuse
     
  7. cPanelMichael

    cPanelMichael Forums Analyst
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    Hello :)

    The following thread may also be of help to you:

    Troubleshooting High Load On Linux Systems

    It's intended for troubleshooting high loads but it also provides information on checking high disk I/O usage.

    Thank you.
     
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