(Originally posted 2017-10-31.)
Hot on the heels of Screencast 11 – DDF Spikes is my latest screencast: Screencast 12 – Get WLM Set Up Right For DB2.
In it I talk about the important topic of ensuring DB2 is protected against shortages of CPU (and zIIP). There are a couple of quite nice examples to illustrate the point.
I should note that I don’t see instrumentation that explicitly shows what happens when IRLM gets heavy competition for CPU. I’m more concerned to show – as one of the examples does – that DBM1 can be significant so it’s worth keeping below IRLM.
This was the first time using Camtasia where I pruned out silence at the final – audio and video recombined – stage. I think I’m finally getting the hang of the tool and there’s a certain amount of muscle memory developed now.
Also, and I hope it doesn’t show too much, my editing of the audio (with Audacity) involved getting rid of a lot of huffing and puffing. I’d like to believe I wasn’t getting (too) old (to record) 🙂 and that this was just a cold. It seemed to me the more excited I got the less the huffing and puffing. I’m not sure if there’s a life lesson there or not. 🙂
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