Why does the output of the top command show more than 100% CPU utilization for a process?
Issue
- The output of top command shows that "XXXX" process is using more than 100% CPU utilization.
top - 09:11:37 up 2:37, 1 user, load average: 0.89, 3.56, 3.72
Tasks: 398 total, 1 running, 397 sleeping, 0 stopped, 0 zombie
Cpu(s): 6.1%us, 2.3%sy, 0.0%ni, 88.5%id, 3.0%wa, 0.0%hi, 0.1%si, 0.0%st
Mem: 24605544k total, 3007220k used, 21598324k free, 63632k buffers
Swap: 18579448k total, 5748k used, 18573700k free, 732280k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
9029 mysql 20 0 4856m 1.1g 4092 S 111.5 4.9 66:25.56 XXXX
22173 apache 20 0 626m 22m 9856 S 23.2 0.1 0:04.35 httpd
21935 apache 20 0 625m 25m 12m S 5.8 0.1 0:03.12 httpd
Environment
- Red Hat Enterprise Linux 5
- Red Hat Enterprise Linux 6
- top
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