We are running a Z10BC W03 and we did see some difference with Hyperdispatch
on. When running a IO workload on one LPAR, the three CP's didn't balance out.
One was running close to 100% and the others were around 20% or less. The LPAR
was running around 50% utilization. When we turned off Hyperdispatch all three
CP's ran at the same utilization. The IO/sec and LPAR utilization was the same
with it on or off so the difference wasn't measurable from that standpoint.
Thanks,
Chris Burgess
EMC²
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-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of
Al Sherkow
Sent: Thursday, January 15, 2009 12:33 PM
To: [email protected]
Subject: Re: z10 and HiperDispatch question.
on a z10BC U03 you probably won't see a 'measurable' difference. All the
LPARs are in a single book and all the physical engines of an LPAR will be
close together already.
Al Sherkow, I/S Management Strategies, Ltd.
Consulting Expertise on Capacity Planning, Performance Tuning,
WLC, LPARs, IRD and LCS Software
Seminars on IBM SW Pricing, LPARs, and IRD
Voice: +1 414 332-3062
Web: www.sherkow.com
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