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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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Example Content
z/OS Performance Monitoring Best Practices for 2021
These best practices for z/OS performance monitoring will take your mainframe management from reactive and costly to proactive and efficient in no time.
How long is the line, and why? Practical Applications of Queueing Theory for The Rest of Us
Look at the applications that are impacted as utilization increases, and whether you need more hardware or can optimize with tuning.
Transparency in z/OS Infrastructure Performance Analysis
Discover how to easily break down the silos one application at a time to achieve greater transparency and collaboration.