ca.portal.admin

IDMS R17 with zIIP processors

Discussion created by ca.portal.admin on Jan 19, 2009
Does anyone have practical experience with how much CPU savings can be
achieved using zIIP processors with IDMS R17?

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Re: IDMS R17 with zIIP processors
"I'm running benchmarks at the moment. It doesn't look good so far.=20

IDMS is indeed using a lot of ZIIP processing resulting in a reported
reduction in CPU time on the main processor. However in terms of
throughput my benchmarks are giving me almost 50% performance
degradation.

Example: 1,000,000 records read from a fully buffered area with existing
system (No ZIIP) I get 21,000 records per second. With ZIIP turned on my
reported CPU is down to about a third but my records per second is
12,000.

I'm running further benchmarks with I/O intensive jobs and mixed loads.
Results available soon.

Chris Trayler =20

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