Category Archives: Uncategorized

(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”

(Originally posted 2013-05-01.) This post started out with the title “Insufficient Nosiness?” I think most of mine do. 🙂 And if they do they should be subtitled “What You Don’t Know Can Still Harm You”. 🙂 Since then its scope’s expanded somewhat and now it’s in two parts, the second part being here. A lotContinue reading “Analysing A WLM Policy – Part 1”

(Originally posted 2013-04-08.) You wouldn’t put all your eggs in one basket, CICSwise, would you? A naive reading of the CICS TS 5.1 announcement materials might lead you to suppose you could. This post is about thinking about your CICS region portfolio in the light of this announcement. While every CICS release introduces capabilities thatContinue reading “How Many Eggs In Which Baskets?”

(Originally posted 2013-03-29.) As you will’ve seen in WLM Response Time Distribution Reporting With RMF I’ve been thinking about WLM Response Time goals quite a bit recently. And this post continues the train of thought. It’s very easy to think of WLM Service Classes as being self contained. For many that’s true – and onlyContinue reading “Are You Being Served?”

(Originally posted 2013-03-20.) If you’re running a workload with WLM Percentile Response Time goals take a look at the RMF Service Class Period Response Time Goal Attainment instrumentation. It’s in the Workload Activity Report but this post is about using the raw data to tell the story better than a single snapshot (or long-term “munging”)Continue reading “WLM Response Time Distribution Reporting With RMF”

(Originally posted 2013-03-18.) First, I’m indebted to Ray Mullins for his help in figuring out how to solve the problems I identified as remaining in Alternate Macro Libraries: A Way To Document Assembler Tables. Indeed he wrote a very handy blog post of his own: Wrapping your own macro code around vendor-supplied macros without changingContinue reading “Alternate Macro Libraries – Part 2”