topic Re: Dedicating Processors in Operating System - HP-UX

Dedicating Processors

Fernando Boza — Sun, 06 Sep 2009 23:58:12 GMT

I have HP-UX 11.11 and I have rp7410 with 8 CPUs
When I execute gzip it run on all processor.... is possible execute it on only two processors?

Re: Dedicating Processors

Hein van den Heuvel — Mon, 07 Sep 2009 00:10:15 GMT

Fernando,

Check out "man mpsched".

http://docs.hp.com/en/B2355-90689/mpsched.1.html

If there are questions after reading that please do not hesitate to ask again with specifics.

hth,
Hein.

Re: Dedicating Processors

Dennis Handly — Mon, 07 Sep 2009 20:34:53 GMT

>When I execute gzip it run on all processor

I wasn't aware gzip was multithreaded, so it would run on one processor at a time.

Re: Dedicating Processors

Fernando Boza — Mon, 07 Sep 2009 20:40:03 GMT

I attach the image

Re: Dedicating Processors

Dennis Handly — Mon, 07 Sep 2009 21:16:18 GMT

>I attach the image

This indicates you have 13 gzip processes (3 sleeping) and 16 CPUs.

Any reason you want to limit it to two CPUs?
It would probably be better to limit the number of gzip processes or nice them.

Re: Dedicating Processors

Yogesh M Puranik — Tue, 08 Sep 2009 01:28:31 GMT

Hi,

It is possible using mpsched as well as the new concept called wlm(Work Load Manager) and PRM(Process Resource Manager)in which we can assign even the "%" of CPU to a perticular process.This means only that much of share of CPU will be utilized by Perticular process.

Rgds
Yogesh