CPU Partitioning on a H80 w/6 processors 1

[Suza]

Is there a way to bind a program (DB2 and WebSphere)to using only 1 processor in an RS6000 (besides turning 5 of the 6 off!)? They spawn MANY processes when started so the bindprocess command doesn't seem efficient. Apparently the sales guy told the powers that be here that it can be done........how?

 

[NeoRisc]

You can try using workload manager that comes with 4.3.3.

NeoRisc

 

[Suza]

Thanks! However, I've read through the info on WLM and as I understand it it only binds percentages of total CPU and prioritizing processes. I don't think this would address the licensing issues I'm stuck with or - am I missing something?

 

[ElgisRamon]

Try using a script to start your daemons, and write that script to search for the daemon's PIDs and bind them to the processors...

I hope it works...

 

[MikeLacey]

That's a good idea -- and isn't there a way to pick up the PID of a process you've just set to run in the background?
Mike
michael.j.lacey@ntlworld.com

 

[odey]

Hi suza there is a command in aix called bindprocessor that allows you to run a process on a particular processor the syntax is bindprocessor Process ProcessorNum eg if you intend to bind a process with id 18456 to processor 1 you run bindprocessor 18456 1. Hope this works


odey

 

[ElgisRamon]

Hello (again)...

This is a valid Korn Shell method:
[tt]
some_daemon &
DaemonPid=$!
bindprocessor $DaemonPid ProcessorNumber
[/tt]

I hope it works...

 

[MikeLacey]

thx Elgis, *that's* what I couldn't remember (the $! thing)
Mike
michael.j.lacey@ntlworld.com

 

[Suza]

thanks! I'll give it a shot. Actually the bindprocessor command was my first inclination, but DB2 and WAS do not spawn single parent PIDs so I thought using such a script would be too complicated. We'll see, eh?
Suza