topic Re: PRM stories? in Operating System - HP-UX

PRM stories?

Roger Baptiste — Thu, 08 Nov 2001 18:38:58 GMT

Hi,

I would like to hear from folks who are using PRM (process resource manager).
I have been having problems in getting it to
work. The installation, setup was easy.
But, the darn thing doesn't kick off as per
the setup. (assigning CPU usage limits between two user id's on a set of shares). It has
no effect on the allocation of CPU resources.

So for people who have gone through this
and got it working - can you please share
your experiences.

thanks
-raj

Re: PRM stories?

G. Vrijhoeven — Thu, 08 Nov 2001 18:58:49 GMT

Hi Rajman,

We have a MC/SG cluster running and thougt about implementing PRM. I guess you know how it works. Yu create a configuration file and assign PRM groups(user and executable wise). But before we activate it we wanted to know how to devide the resources so we only loaded the configuration without activating it and we had the problem that some processes ended up in an other PRM group, and when we activated it (test systems) the problem was solved. I do not know with version you installed but that problem was fixed in the latest version. We did not go ahead with implementation of it becouse it was to mutch work to keep the PRM configuration up to date ( updates on packages, switch scenarios, etc.). For a regular system i think PRM is a good tool. Yust install the latest version.

Gideon

Re: PRM stories?

Deshpande Prashant — Thu, 08 Nov 2001 19:08:08 GMT

Rajman
Try using the CAPON feature on PRM to restrict in usage its allowed quota.
#prmconfig -M CPUCAPON

Thanks.
Prashant.

Re: PRM stories?

Roger Baptiste — Fri, 09 Nov 2001 15:45:51 GMT

Gideon,
The PRM version i am using is:
B7697BA C.02.00 HP PRM Software Libraries

Prashant,
Thanks for the tip. I used gui to enable it. But will confirm it, when i get back to testing it again next week.

-raj

Re: PRM stories?

G. Vrijhoeven — Fri, 09 Nov 2001 15:58:14 GMT

Hi,

Ok that is the version that should work fine.

Gideon

Re: PRM stories?

Bill McNAMARA_1 — Fri, 09 Nov 2001 18:22:33 GMT

PRM will have no effect until 100% load.
That's the only time there'll be resource allocation/deallocation.

You might need WLM although that's not free like PRM.

Later,
Bill

Re: PRM stories?

G. Vrijhoeven — Fri, 09 Nov 2001 18:35:34 GMT

Hi again,

You should be able to keep processes in tome by activating capping. If you do not activate it only starts when utalization reaches 100%.

Gideon

Re: PRM stories?

Wodisch — Sat, 10 Nov 2001 20:00:13 GMT

Hello RajMan,

it seems like PRM is really working at HP-UX 11.i, the way it did some things on 11.0 was a little *brain-dead*... oops, I meant: the implementation was sub-optimal ;-)

Just my $0.02,
Wodisch