Hello,
One of the procresses uses the CPU of my Sparc 220R very much ...and
utilization become 100% ....is there a way i can limit the cpu
utilization.



Regards,
Atif

Atif Munir wrote on Thursday 29 January 2004 05:25 :
> One of the procresses uses the CPU of my Sparc 220R very much ...and
> utilization become 100% ....is there a way i can limit the cpu
> utilization.

In general:

man nice
man renice

In particular (or vice versa?):

That a process wants to run all the time is not necessarily a fault or
a problem. It can be an error in the application, e.g. active waiting.
It can be a problem if other processes are starved for CPU, in which
case either nice or adding more CPUs can help.

However, it can also be a good example of CPU utilization. There is
no general rule stating that one's CPUs should always remain under a
certain utilization threshold.
We have a number of servers which constantly have a load greater than
one. These are compute servers and it's their job. If they had less
load, we probably would have needed fewer servers to start with.

On Wed, 28 Jan 2004, Atif Munir wrote:

> Hello,
> One of the procresses uses the CPU of my Sparc 220R very much ...and
> utilization become 100% ....is there a way i can limit the cpu
> utilization.

Yeah, don't run that process.

Seriously, assuming that this doesn't otherwise cause a problem,
why the concern? You've for 100% of a CPU, so you might as well
use it all. It might also be an indication that your system is
underspecified for the task you've assigned it.

--
Rich Teer, SCNA, SCSA

President,
Rite Online Inc.

Voice: +1 (250) 979-1638
URL: http://www.rite-online.net

On Wed, 28 Jan 2004 20:25:32 -0800, Atif Munir wrote:

> Hello,
> One of the procresses uses the CPU of my Sparc 220R very much ...and
> utilization become 100% ....is there a way i can limit the cpu
> utilization.

If you're running Solaris 9, Solaris Resource Manager might be something
to look into. Alternatively, you could do a little root cause analysis as
to what the process that is consuming all the CPU is doing and try and fix
that.

Saundo
--
Chris "Saundo" Saunderson saundo@earthlink.net
Unix/CCNA/CCDA Guy Powered by Linux and the Orb.

Atif Munir wrote:
> Hello,
> One of the procresses uses the CPU of my Sparc 220R very much ...and
> utilization become 100% ....is there a way i can limit the cpu
> utilization.
>
>
>
> Regards,
> Atif

S9 also has resouce controls via rctladm - but don't ask me for
specifics ;-)