what value ?

marcus007

• November 09, 2013 12:54

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, [COLOR="#FF0000">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 [COLOR="silver">- - - 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 [COLOR="silver">- - - Updated - - - top is normal

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  quietFinn

  • November 09, 2013 19:05

  I'm not sure what you are asking? "99.9%id" means the server is 99.9% idle.

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  marcus007

  • November 09, 2013 19:56

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

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  ravi9

  • November 10, 2013 03:24

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

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  fabin

  • November 10, 2013 08:58

  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 [url=http://www.cyberciti.biz/hardware/linux-iotop-simple-top-like-io-monitor/]Linux iotop: Check What"s Stressing And Increasing Load On Your Hard Disks

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  marcus007

  • November 10, 2013 09:39

  thank you for every comment . I'm confuse

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  cPanelMichael

  • November 11, 2013 15:55

  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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