Determining which cpu performs which process in a Job

[CharlesNagy]

We have a multi processor setup, and would like to analyze performance per job per processor. In other words, which CPU was performing which process. I searched through historical postings on this, but all I could find was reporting by process rather than processor.

Perhaps this is not possible, but I have been tasked with finding out. Many thanks in advance.

[ray.wurlod]

It's not possible. DataStage does not control what process is executed by which CPU - it just starts processes. You can see how much CPU was eaten by each process in the Director (Monitor), but not on which CPU.

[chulett]

Never mind the fact that processes can be handed around from CPU to CPU like hot potatoes. :D Have a chat with your Sys Admin types, they should be able to explain what information you can or can't get from your system.

[CharlesNagy]

Thanks Guys,

I suspected as much.

Much appreciated, and I will close this topic now

[kduke]

This becomes even more complicated in a cluster or grid. We are trying to figure out which machine a process or partition runs on.

[ray.wurlod]

That one's easy. Just have the player processes report their pid when they start - the messages will be logged from their own node. The environment variable, from memory, is APT_PM_SHOW_PIDS.

[kduke]

Thanks Ray.