How can I throttle down 'prostrct create' & prorest so they don't impact system performance

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04-10-2008, 12:03 AM

jjacobse@gmail.com

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How can I throttle down 'prostrct create' & prorest so they don't impact system performance

We have mutliple databases on our AIX test and development systems.
Whenever we refresh a database all other users feel the impact of the
process. Does anyone know how I can mimize the impact of this process
so that CPU's and disk system resources are still available to other
users. For example, the major bottleneck is disk IO. But if we use
IBM's workload manager to keep the refresh process form monopolizing
the disk system we find that the CPU's get adversely impacted with the
result that they are mostly setting in wait state rather than doing
useful work for other users. We want this refresh process to run at
low priority in the background.

I've tried "nice" and WLM. Both fail "Nice" has no impact because the
disk system is monopolized; WLM frees up disk resources but sends all
the processors into the wait state.. Next test is to try them
together. But, I was wondering if someone on this list could give me
some better ideas. I'm afraid I'm overlooking some of the other
options I might have.

Jeff Jacobsen

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How can I throttle down 'prostrct create' & prorest so they don't impact system performance