On 7/3/05, Oliver J. Morais <[EMAIL PROTECTED]> wrote:
> * Arnaud Bergeron <[EMAIL PROTECTED]> [050703 03:09]:
> > All it takes to find that out is a little bit of observation and
> > deduction.  From the second output you provided you should see md5's
> > CPU usage go up rapidly.
> 
> No. md5's CPU doesn't go up. If I try "john -t" it slowly goes up.
> 
> Let's stick with "john -t" 'cause it's real CPU hog.
> 
> top(1) output show a CPU-Usage going up slowly, showing different numbers
> than ps(1).
> 
> load averages:  1.80,  1.15,  0.68                                            
> 09:25:13
> 51 processes:  1 running, 49 idle, 1 on processor
> CPU states: 97.0% user,  0.0% nice,  2.5% system,  0.5% interrupt,  0.0% idle
> Memory: Real: 45M/116M act/tot  Free: 374M  Swap: 0K/1024M used/tot
> 
>   PID USERNAME PRI NICE  SIZE   RES STATE    WAIT     TIME    CPU COMMAND
>  7399 moo       64    0 3208K  952K run      -        0:10 36.47% john
> 13289 moo        2    0   18M   22M sleep    select   0:21  0.05% Xorg
> 16577 moo        2    0 2924K 3588K sleep    select   0:08  0.00% xterm
> 13376 moo       10    0 4332K 2832K idle     wait     0:00  0.00% mutt
> 26326 moo        2    0 3000K 3600K sleep    select   0:00  0.00% xterm
> 
> $ while true; do ps -ax -opcpu -ocommand | grep john | grep -v grep ; sleep 
> 1; done
> 45.0 john -t
> 71.8 john -t
> 80.9 john -t
> 85.0 john -t
> 87.8 john -t
> 89.6 john -t
> 90.7 john -t
> 91.7 john -t
> 92.1 john -t
> 92.6 john -t
> 93.1 john -t
> 93.5 john -t
> 93.9 john -t
> 
> And these numbers were taken parallel in two xterm, so 36.47%
> from top(1) showed up wile ps(1) was reporting 90+ percent CPU.
> 

Was it always showing 36.47% in top or did it go up?

Aside from that, from what I can gather top uses sysctl(3) to get its
values while ps uses kvm(3).  I understand that kvm is old heritage
and is to be replaced.

More importantly, does this issue affects your system stability or
security? Do you loose sleep over it? If not, maybe its not that
important.

> >   Now, if you're not happy with that, you're
> > welcome to fix it yourself
> 
> As always... Too bad I'm not a developer.
> 
> 


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