And what are the inhibitors that prevent you from running VSE 2.3 directly under z/VM 5.4?
I have VSE 2.3.2 running on z/VM 5.2 on a z/890. I've been toying with the idea of upgrading VM this summer. Are there other products that are running under VM/ESA 2.2 that need to be on the same VM system as the VSE system? Tom Duerbusch THD Consulting >>> Berry van Sleeuwen <berry.vansleeu...@xs4all.nl> 4/29/2009 1:52 AM >>> Hello listers, Before I begin, yes I know third level will cost us. Since SIE doesn't get down to the VSE we do not benefit from that and all CPU has to be emulated. We have moved an old VM/ESA 2.2 with VSE 2.3 to a new z890 machine. Obviously this level of VM can't run on zseries so we have put the VM into an zVM 5.4 LPAR. It does run and since they came from an old (ESCON) machine the batch (mostly IO) runs very good. We did expect to see some performance penalties and we already sized the machine to twice the MIPS they used to have. And for the most part the guest VM has a TV ratio between 1.9 and 2.5. Usually during batch the TV is just above 2 but during online hours we also see a TV above 3. There are a few transactions that have a very bad performance. (from 2 seconds to 2.5 minutes) The time also depends on the other load in the VSE (or perhaps even in the CICS). We have been playing with lots of settings. Such as, two virtual CPU's in the guest, two virtual CPU's in VSE with TurboDispatcher, one dedicated CPU to the guest VM. Any ideas on how to speed up the guests? Other than migrating the guest VM to the zVM 5.4 host? TIA, Berry.
