On Thu, 3 Aug 2006 09:52:41 -0400, Mark Jacobs wrote: >On Thursday 03 August 2006 09:36, Edward Jaffe wrote: > >> You make your bed. Then you lie in it. ;-) >> >The resistance is from a different group in the datacenter that likes to hand >tune things > >> Seriously, there are definitely certain types of workloads that don't do >> well with WLM-managed batch initiators. (For example, a workload that >> requires guaranteed immediate initiation -- so called "hot" batch -- or >> one that depends on over-initiation or fixed initiator limits.) But, for >> most batch workloads, it's just fine. It's easy to try as well. (One >> command can switch a JES2 job class to/from WLM management.) > >They don't want to do what they don't want to do. Mark, I developed a design for another site locally that allowed workload to be leveled by using ThruPut Manager's limiting agents and a small started task that queried WLM periodically to see how busy each image was at the various importance levels and then it would readjust the limiting agents availability to push subsequent batch job starts to various JES2 members accordingly. (The importance levels there could identify categories of work very easily and could therefore immediately clue it in on whether the CPU busy was due to onlines, production batch, or other loved-or-unloved- ones.) The overload was tiny (a couple or three CPU minutes per day) and it accomplished the goal nicely. But I'm not going to suggest it to your site since they want to hand tune and that was automated. It even inserted the agents dynamically so there were no JCL changes needed. (It still is running there, as far as I know; Mark D., please chime in to correct or agree as appropriate.) The folks at ThruPut Manager support/development will certainly work with you on the issue. They have an alternative design that they seemed to like, but it wouldn't have worked at the site I mentioned. Maybe it will work for you? -- Tom Schmidt Madison, WI
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