Tag Archives: mainframe

Modern Machines, Modern Metrics

Modern Machines, Modern Metrics In z17 Sustainability Metrics – Part 0 I wrote about the new z17 Sustainability Metrics, or “Power Consumption”, if you prefer. This post isn’t part 1 – as I don’t intend to go into much detail about what I’ve learnt so far. I have learnt things, of course. During the SummerContinue reading “Modern Machines, Modern Metrics”

z17 Sustainability Metrics – Part 0

I call this “Part 0” because I haven’t yet seen any data. However I think it useful to start here, rather than waiting for customer data to appear – for two reasons: Sharing what data is available is useful. Showing how “folklore” is built is instructive and useful. As you might expect, I’ve been downContinue reading “z17 Sustainability Metrics – Part 0”

Mainframe Performance Topics Podcast Episode 36 “Telum Like It Is”

We were especially keen to get a podcast episode out on the day z17 was announced, having both worked on the launch project in various capacities. So, for once there was a deadline – which we actually made. It was a pleasure to record this, with almost every piece of it related to z17. SoContinue reading “Mainframe Performance Topics Podcast Episode 36 “Telum Like It Is””

Mainframe Performance Topics Podcast Episode 35 “In Search Of EXCELence?”

As usual it’s taken us longer than we would like. The usual problem of finding planning and recording slots we can both make applies. But I think the episode turned out well. It was certainly fun to make. So here are the show notes. Episode 35 “In Search Of EXCELence?” long show notes This episodeContinue reading “Mainframe Performance Topics Podcast Episode 35 “In Search Of EXCELence?””

Utility Window Detection

It seems to me understanding when an installation’s utilities run is important. Why is this? It’s because utilities can make systems behave differently from how they usually do. And some of these behaviours can represent a challenge. It’s often also valuable to reduce the utility window. What Is A Utility? There is no formal definitionContinue reading “Utility Window Detection”

Mainframe Performance Topics Podcast Episode 34 “Homeward Bound”

We started planning this one quite a while ago. Thankfully our topics tend to be evergreen – in that they’re still topical for quite a while. In that vein I know we are gaining new listeners and they aren’t all starting with the latest episode. Anyway, our schedules have been their usual hectic selves –Continue reading “Mainframe Performance Topics Podcast Episode 34 “Homeward Bound””

Tips For Debugging A DFSORT E15 Exit

I suppose I’d better tell you what an E15 exit is – else you might not read the rest of the post. 😀 DFSORT (and its competitor) allow you to send records to an exit routine. This happens as the very first thing for processing an individual record. This routine is called an “E15 routine”.Continue reading “Tips For Debugging A DFSORT E15 Exit”

Mainframe Performance Topics Podcast Episode 33 “These Boots Were Made”

I hope you can tell that Marna and I had a lot of fun making this episode. I can’t recall which of us came up with the cultural reference. But it sort of developed – until the aftershow was sort of inevitable. Anyhow here are the show notes for Episode 33. The podcast series isContinue reading “Mainframe Performance Topics Podcast Episode 33 “These Boots Were Made””

Mainframe Performance Topics Podcast Episode 32 “Scott Free”

Episode 32 was, as always a slow train coming. I think it’s a fun one – as well as being informative. It was really good to have Scott back, and we recorded in the Poughkeepsie studio, just after SHARE Atlanta, March 2023. Talking of which, the aftershow relates to SHARE. It’s a classic example ofContinue reading “Mainframe Performance Topics Podcast Episode 32 “Scott Free””