December 2006
Intermediate to advanced
228 pages
6h 20m
English
book
Introduction to the New Mainframe: Large-Scale Commercial Computing
by Mike Ebbers, Pilar Gonzalez Adrados, Frank Byrne, Rodney Martin, Jon Veilleux
Content preview from Introduction to the New Mainframe: Large-Scale Commercial Computing
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Chapter 2. Capacity 35
Central Processor (CP) usage
Because the workload can be a mix of high and low importance, a CP utilization
of 100% does not necessarily mean that capacity has been exceeded. In fact, it
is not unusual for the CPs on IBM System z servers to be utilized at 100% for
long periods of time. However, if the reports indicate that the reason for the
failure to meet the SLA was due to waiting for CP resources, then a closer look is
warranted. Delays due to waiting for CP resources do not necessarily mean that
more CPs are required. Perhaps running part of the workload at a different time
might be all that is needed.
Main storage ...
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