strange behaviour on FreeBSD 7.1
Jonathan Chen
jonc at chen.org.nz
Thu Nov 18 21:00:33 UTC 2010
2010/11/18 Коньков Евгений <kes-kes at yandex.ru>:
> Hi.
>
> Sometimes system goes to this situation: 0% idle and no processes take CPU time
>
> #top -SIHP
> last pid: 62813; load averages: 4.17, 3.64, 2.16 up 28+06:44:02 20:41:41
> 155 processes: 7 running, 129 sleeping, 19 waiting
> CPU: 99.3% user, 0.0% nice, 0.7% system, 0.0% interrupt, 0.0% idle
> Mem: 177M Active, 27M Inact, 124M Wired, 13M Cache, 60M Buf, 148M Free
> Swap: 2048M Total, 51M Used, 1997M Free, 2% Inuse
>
> PID USERNAME PRI NICE SIZE RES STATE TIME WCPU COMMAND
>
> #top
> last pid: 62852; load averages: 4.10, 3.67, 2.22 up 28+06:44:36 20:42:15
> 172 processes: 4 running, 168 sleeping
> CPU: 99.6% user, 0.0% nice, 0.4% system, 0.0% interrupt, 0.0% idle
> Mem: 203M Active, 27M Inact, 125M Wired, 13M Cache, 60M Buf, 121M Free
> Swap: 2048M Total, 51M Used, 1997M Free, 2% Inuse
>
> PID USERNAME THR PRI NICE SIZE RES STATE TIME WCPU COMMAND
> 62817 root 36 -8 0 29696K 23276K piperd 0:00 7.62% perl5.8.8
If you look at the "last pid" between the 2 top-output snippets, you
can see that approx 40 processes came and went in-between. This
indiciates that you probably have some script running that's spawning
a large number of short-lived processes.
--
Jonathan Chen <jonc at chen.org.nz>
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