Category Archives: Uncategorized

(Originally posted 2013-07-07.) 9 months on from this post and I finally get some time to enhance my Coupling Facility reporting. If you recall I mentioned OA37826, which provides new SMF 74 Subtype 4 data and fields in the RMF Coupling Facility Activity report – in support of enhancements in CFLEVEL 18.[1] I also mentionedContinue reading “Coupling Facility Topology Information – A Continuing Journey”

(Originally posted 2013-06-30.) I’ll admit it: I have a dirty little secret. 🙂 All I can say is it was in my youth – and I didn’t know any better. 🙂 And folks I’m exclusively revealing my secret here in this blog… 🙂 I learned to program in BASIC. 🙂 Actually the “I didn’t knowContinue reading “Why Do I Program In ?”

(Originally posted 2013-06-24.) I’ve been fortunate enough to speak at two conferences in the past month: UKCMG Annual Conference – in London in May System z Technical University – just outside Munich in June I presented three different sets of material, with very little overlap: Time For Dime Life And Times Of An Address SpaceContinue reading “Recent Conference Presentations”

(Originally posted 2013-06-07.) I like REXX but sometimes it leaves a little to be desired. This post is about a technique for dealing with some of the issues. I present it in the hope some of you will find it worth building on, or using directly. Note: I’m talking about Classic REXX and not OpenContinue reading “Dragging REXX Into The 21st Century?”

(Originally posted 2013-06-01.) Over the years I’ve written emails with data collection requirements dozens of times, with varying degrees of clarity. It would be better, wouldn’t it, to write it once. I don’t think I can get out of the business of writing such emails entirely but here’s a goodly chunk of it. Another thingContinue reading “Data Collection Requirements”

(Originally posted 2013-05-26.) I have REXX code that can be called directly by TSO (in DD SYSTSIN data) or else by another REXX function. I want it to behave differently in each case: If called directly from TSO I want it to print something. If called from another function I want it to return someContinue reading “REXX That’s Sensitive To Where It’s Called From”

(Originally posted 2013-05-22.) It’s possible I’ve written something about this before: My blog is so extensive now it’s hard to find out exactly what I’ve written about (and I’m going to have to do something about that). I say “written something” because I know for sure I haven’t written about the SMF record field IContinue reading “Discovering Report Class / Service Class Correspondences”

(Originally posted 2013-05-20.) A customer asked me to examine two WLM service definition snapshots taken on adjacent days – and discern any differences. This is not a challenge I’ve been set before – and so I expect it’s pretty rare. But, thinking about it, I reckon it could be quite useful. So they sent meContinue reading “Playing Spot The Difference With WLM Service Definitions”

(Originally posted 2013-05-02.) In October Frank Kyne and I expect to run a residency in Poughkeepsie. You can find the announcement here. The residency builds on the ideas presented here and three subsequent posts. I revisited a specific part of it in Cloning Fan-In. So what are we going to do? For a start we’reContinue reading “New Batch Residency”

(Originally posted 2013-05-01.) This is the second part, following on from Part 1. Importance Versus Velocity After drawing out the hierarchy you have to set actual goals – whether velocity or some form of response time. And you have to set importances. The importances should now be easy as they flow from the hierarchy. IRLMContinue reading “Analysing A WLM Policy – Part 2”