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POWER7 Performance FAQ - Entitlement, Virtual Processors, Affinity, rPerf, Spare Capacity

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Published on Apr 4, 2013

Nigel answers 7 questions he gets asked regularly about POWER7 Performance Entitlement (E) Virtual Processors (VP) & Affinity and Memory
- Monitoring SMT use
- Set Entitlement to typical use & monitor/tune it
- Get to know your performance statistics - RTFM
- Memory leak - unlikely & processes don't shrink
- Lower the VP to get SMT threads working for you
- rPerf sizing is fine but watch those assumption
- Spare Capacity is hard to determine
Watch those ratios
- LPAR Entitlement : Virtual Processor
- Machine Total VPs : Physical CPUs in the Pool

Machine & LPAR and build documentation http://tinyurl.com/HMCscanner

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