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POtop shows high user-space CPU utilization but all the process show 0
 

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  1. POtop shows high user-space CPU utilization but all the process show 0
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    <p>Any ideas on why the load would be through the roof, top shows each CPU user-space utilization at 85% or higher, yet no process is tagged with any CPU utilization?</p> <p>First time I've ever seen this. We've got a server that has a load average of 20, and the break down on each CPU is extremely high (>85%), yet none of the processes in the list have <em>any</em> CPU % utilization. Here's a sample, and yes, this is with the processes sorted from highest to lowest CPU utilization - every once in a blue moon we'll actually see a process that shows "1" as the CPU %.</p> <p>This is a mysql server box.</p> <pre><code>top - 16:08:48 up 185 days, 15:27, 5 users, load average: 20.60, 17.20, 13.17 Tasks: 221 total, 2 running, 219 sleeping, 0 stopped, 0 zombie Cpu0 : 90.3%us, 5.8%sy, 0.0%ni, 3.2%id, 0.6%wa, 0.0%hi, 0.0%si, 0.0%st Cpu1 : 89.1%us, 5.8%sy, 0.0%ni, 4.5%id, 0.6%wa, 0.0%hi, 0.0%si, 0.0%st Cpu2 : 86.4%us, 5.0%sy, 0.9%ni, 6.9%id, 0.6%wa, 0.0%hi, 0.0%si, 0.0%st Cpu3 : 88.1%us, 5.8%sy, 1.3%ni, 4.8%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu4 : 89.8%us, 7.2%sy, 0.0%ni, 1.3%id, 0.0%wa, 0.0%hi, 1.6%si, 0.0%st Cpu5 : 91.0%us, 2.6%sy, 0.0%ni, 5.4%id, 1.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu6 : 91.8%us, 4.6%sy, 0.3%ni, 3.3%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu7 : 78.8%us, 14.4%sy, 1.3%ni, 5.4%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Mem: 12326280k total, 12147144k used, 179136k free, 158512k buffers Swap: 8420344k total, 0k used, 8420344k free, 10731260k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 22691 root 20 0 19348 1536 1068 R 1 0.0 0:00.29 top 8723 root 20 0 19356 1556 1064 S 0 0.0 0:01.51 top 21562 zabbix 25 5 64000 1224 656 S 0 0.0 54:17.09 /usr/sbin/zabbix_agentd 21566 zabbix 25 5 63976 1132 524 S 0 0.0 151:05.16 /usr/sbin/zabbix_agentd 25165 root 20 0 18700 2744 1840 R 0 0.0 0:00.01 perl /usr/local/bin/mk-heartbeat -D utility --interval 1 --update -h rs4 --password 1 root 20 0 23708 1184 596 S 0 0.0 0:33.56 /sbin/init 2 root 20 0 0 0 0 S 0 0.0 0:00.01 [kthreadd] 3 root RT 0 0 0 0 S 0 0.0 0:34.65 [migration/0] </code></pre>
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      1. POtop shows high user-space CPU utilization but all the process show 0
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    2. VO
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    1. COoutput of `vmstat` and `iostat`?
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    2. COI assume you ran top as sudo, in case that helps any?
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      1. USrogerdpack
 

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