topic Re: PRM Process resource manager in Operating System - HP-UX

PRM Process resource manager

Justo Exposito — Wed, 21 Nov 2001 16:36:37 GMT

Hello,

Somebody know how works the PRM, which things can we do with it and the aproximate price for two HP 9000 N class in cluster?

Thanks in advance.
Justo.

Re: PRM Process resource manager

Sridhar Bhaskarla — Wed, 21 Nov 2001 17:04:35 GMT

Justo,

PRM is Process Resource Manager that works very good if you have more than one application on the system and you want to control the resource utilization based on the application.

For ex., if you have two database on the system and one of them is not very critical but is using a lot of resources that you want to allot to the one that is very critical, PRM will become handy.

Check up this link for understanding PRM.

http://docs.hp.com/hpux/onlinedocs/B8733-90001/B8733-90001.html

Price

Search for PRM or B3835DA in
http://software.hp.com

-Sri

Re: PRM Process resource manager

Patrick Wallek — Wed, 21 Nov 2001 17:39:06 GMT

Here's the link directly to PRM within HPs software area:

http://www.software.hp.com/cgi-bin/swdepot_parser.cgi/cgi/displayProductInfo.pl?productNumber=B3835DA

Re: PRM Process resource manager

Jason VanDerMark — Wed, 21 Nov 2001 22:00:25 GMT

PRM is a great tool which allows you to group applications and users into groups. Once in groups you can then specify limits of system resources (CPU, Memory, Disk, etc.) for them which can really help when you have really resource hungry applications. As to the pricing. N-Classes are Tier-2 and the HP product page for PRM states:

$7650.00 License To Use - Tier 2

So you would probably see a pricetag of $15300.00 Plus tax of course. Hope this helps.

Regards,
Jason V.

Re: PRM Process resource manager

Satish Y — Wed, 21 Nov 2001 22:15:07 GMT

Hi Just,

PRM can be used to control CPU and memory consumption....
U can divide applications and users into groups and assign minimum priority levels at which ur applications started by the perticular group runs....
For e.g. if pkg1 and pkg2 are running on system A and pkg3 is running on system B and if system A goes down,then pkg1 and 2 failed over to system B,
1) without PRM: all the processes/packages have same priority and allocated CPU equally(say each 33%).
2) with PRM and assigned priority: If pkg3 assigned higher priority, and bcos of running primary node. and also pkg1 has greater priority over pkg2 then CPU allocation changes something like:
pkg1 - 30% pkg2 - 20% pkg3 - 50% (approx)

Hope it is clear....
Satish.

Re: PRM Process resource manager

Roger Baptiste — Wed, 21 Nov 2001 22:32:03 GMT

Justo,

I have just begun to implement PRM on an two node N-box cluster. It is useful if you are having different applications running at the same time on the system, and one application hogs more resource, depriving the others.

Others have already pointed out the links to the docs. I would suggest you read the whole of it , since the tool needs clear understanding to use , even though it seems simple to implement.

HTH
raj

Re: PRM Process resource manager

Tim Gilbert_1 — Fri, 23 Nov 2001 13:26:27 GMT

Hi,

PRM looks interesting, however all I want to do is assign a process to a particular CPU - the docs on PRM mention about "..if a process is locked to a CPU...".

Can this be done without PRM?

Many thanks, Tim.

PS: Using HPUX10.20, on a dual processor system.