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Past Performance Tips from Our Experts
John Baker – “Since a catalog cannot span volumes or exceed 123 extents, it is important to at least allow it to grow beyond the old 4G limit by defining it as Extended Format and Extended Addressability. If you haven’t done these things (EF/EA), it would be a good idea to do so before it trips you up.”
Todd Havekost – “Processor cache operates far more effectively at lower utilization levels. In my specific experience, operating at percent utilizations in the 30’s instead of the upper 80’s reduced MSU consumption by 30% (13,000 MIPS!)”
Brett Allison – “Compressing data may be a good way to gain back capacity, but there can be hidden performance problems if compressible workloads are not first identified. Visualizing these workloads is key to determining when and where to successfully use compression… Otherwise, you may be trading a capacity issue for a performance problem.”
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Integrating Dataset Performance (SMF 42.6) and Db2 Buffer Pools & Databases (SMF 102/IFCID 199) Data
Dataset performance data from SMF 42.6 records provides disk cache and response time data at the Db2 buffer pool and Db2 database levels when integrated with Db2 Statistics IFCID 199 data.
From CPU MF Counters to z16 Invoices: Thoughts on the Impact of Processor Cache Measurements | IntelliMagic zAcademy
The z16 introduced substantial processor cache design changes. Learn how this impacts the operation and efficiency of your workloads.
Using New XCF Metrics to Optimize XCF Buffer Use
Gain a better understanding of the latest XCF metrics and learn how they can help you align your sysplex.