Stream: zP&C
Time: 15:15 - 16:15
The CPU Critical attribute on the service class definitions has been around since almost the beginning of WLM but it is still sometimes misunderstood. What does it do? When should or shouldn’t you use it? What if it was enabled on all your importance 1 and/or 2 workloads? Join Peter Enrico in this session for an interesting exploration of the history and usage of CPU Critical, an examination of some modern uses of it, and finally some opinions about the upcoming z/OS 3.1 changes that may default CPU Critical on for certain importance levels (and already does during boost intervals).
There is currently no attachment for WLM CPU Critical: A modern revisit of a classic WLM option
Peter Enrico is the President of Enterprise Performance Strategies, Inc., which he founded in 2000. Along with Scott Chapman, Peter is the co-designer and developer of Pivotor®, a web-based z/OS SMF data mining, reporting, and analysis solution. Peter’s background includes RMF design and development, WLM design and development, MVS performance design and analysis for IBM, and much more. Peter has done z/OS analysis for hundreds of z/OS shops, is a highly effective workshop instructor, teaches a z/OS performance fundamentals class for Marist College, and is highly skilled at measurement analysis. Peter is CMG’s 2014 Mullen Award winner, has won numerous SHARE best session awards, and has been recognized with a SHARE Distinguished Speaker award.
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