by Ed Goodman » Fri Nov 04, 2011 8:56 pm
I don't think it's simple any more. I think you used to be able to put a higher priority in the job card, and it would not only jump ahead in the waiting queue for jobs, but also would get more time slices while running.
These days, the priority still seems to change when a job gets selected to run, but it doesn't make it go any faster once it starts. There are system managed classes that go with Workload Manager (WLM) that keep all of that stuff tuned up.