Episode 35 "In search of EXCELence?"

What’s New z/OS dependencies moved from Semeru 11 to 17 before November 2025 Manual of the Moment: MVS Extended Addressability Guide for learning about address spaces, data spaces, and hiperspaces. Mainframe - Looking at ages of fixes you haven't installed yet IBM has started adding a REWORK date to PTFs. The date may be a day or two before the actual availability date. Use case example: requirement with a policy that Security/Integrity (SECINT) PTFs that meet some criteria must be installed within xx days of availability. Fits nicely with the z/OS UUID support, from Episode 34. Performance - Drawers, Of Course Martin explores the IBM z16 drawers, frames, and cache hierarchy. All of an LPAR’s logical processors and memory should be in the same drawer. Important because cross-drawer memory and cache accesses are expensive. Topics - Excel Love It Or Hate It Martin and Marna discuss how they use Excel, and what they like and dislike about it. Graphing and customization difficulties were investigated. On the blog Marna's blog Martin's blogs So It Goes...