TOP shows above 100% WCPU usage

[Jiawei Ye]

On 8/16/06, Dan Nelson <dnelson at allantgroup.com> wrote:
> > How can mysql use 160%? Is this a reporting bug in top because mysql is
> > threaded?
>
> You have multiple CPUs, so a threaded process can theoretically reach
> 100*ncpus cpu usage.
>
> --
>         Dan Nelson
>         dnelson at allantgroup.com
I am seeing this on a UP system too.

last pid: 35355;  load averages:  0.36,  0.08,  0.03    up 1+12:11:39  12:20:56
205 processes: 3 running, 202 sleeping
CPU states: 97.8% user,  0.0% nice,  1.5% system,  0.0% interrupt,  0.7% idle
Mem: 122M Active, 52M Inact, 59M Wired, 7808K Cache, 34M Buf, 524K Free
Swap: 1024M Total, 40M Used, 984M Free, 3% Inuse

  PID USERNAME      THR PRI NICE   SIZE    RES STATE    TIME   WCPU COMMAND
35343 www            22   4    0   275M 64620K accept   0:21 271.92% java
  767 jabber          1  91    0  8836K  1284K select   7:07  0.00% perl5.8.8
  875 pgsql           1  91    0 19880K  1748K select   0:20  0.00% postgres
  840 vscan           1   4    0 22892K 18304K accept   0:17  0.00% clamd
 4733 www            27   4    0 17428K  3268K kqread   0:10  0.00% httpd

-- 
"Without the userland, the kernel is useless."
               --inspired by The Tao of Programming