topic CPU with SYS utilization in Operating System - HP-UX

CPU with SYS utilization

Joel Bortolotto Almeida — Mon, 11 Jul 2005 06:00:20 GMT

In the CPU report a have 40% of CPU utilization with SYS. How can I know what process is consuming it ?
I need to know the processes that are using SYS CPU and how can I reduce the SYS CPU, because it grows in time and never shrink, only with a machine reboot.

Re: CPU with SYS utilization

Borislav Perkov — Mon, 11 Jul 2005 06:14:26 GMT

Hi,
You can see it with top command, or if you have Glance installed.
You can also try this command:
echo " VSZ(KB) PID USER COMMAND";UNIX95= ps -e -o 'vsz pid ruser args' |sort -nr|head -30

Regards,
Borislav

Re: CPU with SYS utilization

Mahesh Kumar Malik — Mon, 11 Jul 2005 06:27:39 GMT

Hi Joel

You can use top command to view processes with CPU utilisation

Regards
Mahesh

Re: CPU with SYS utilization

Joel Bortolotto Almeida — Mon, 11 Jul 2005 06:34:34 GMT

Borislav,

Thanks for your help.
IÂ´m interested in SYS CPU utilization. I know that with top or glance i can take information about CPU utilization, but my question is about SYS CPU utilization. ItÂ´s grows and I donÂ´t know what processes are using CPU in SYS mode.

After I know what processes are consuming SYS CPU I will verify what to do.

Re: CPU with SYS utilization

Vibhor Kumar Agarwal — Mon, 11 Jul 2005 06:42:07 GMT

How about prstat.

I think it shows that also.

Re: CPU with SYS utilization

Borislav Perkov — Mon, 11 Jul 2005 06:50:36 GMT

Than you should be concetrated on processes owned by root and find their CPU utilization.
exp. in glance filtering root owned processes using high percentage of CPU.

Re: CPU with SYS utilization

Eric Antunes — Mon, 11 Jul 2005 06:56:14 GMT

Hi Joel,

Can you tell us what hardware (CPU, storage, etc...) your have in this box?

Please also post the following results:

#iostat -t 6 10

Best Regards,

Eric Antunes

Re: CPU with SYS utilization

Joel Bortolotto Almeida — Mon, 11 Jul 2005 09:01:35 GMT

ItÂ´s a L3000-7x , with 4 CPUÂ´s. ItÂ´s connected to an EVA5000.
The result of iostat is attached.

Re: CPU with SYS utilization

Eric Antunes — Mon, 11 Jul 2005 09:17:45 GMT

Hi again,

Something is wrong with your c20t1d3 disk (see this thread with the same type of issue):

http://forums2.itrc.hp.com/service/forums/questionanswer.do?threadId=906088

Best Regards,

Eric Antunes