True, relative to the zIIP workload. But if that zIIP workload is relatively low importance and crossing over to the GCPs and raising your R4HA, it may make sense to restrict the low importance work instead of increasing the R4HA, depending on what your business requirements are. And keeping the low importance workload off from the GCP can be a good thing if the GCPs are being driven relatively busy by the zIIP-eligible work.
Performance decisions are often dictated by financial concerns. More zIIP capacity is always good, but it costs money. And for some machines IBM won't sell you more on that generation of machine, making them even more difficult to obtain. (I.E. machine replacements are not quick and simple solutions.) Lowering software costs to make the platform more cost-competitive is good, but that can cost performance. Unfortunately the dollar increments that we deal with on the mainframe makes such decisions more difficult than just "add another CPU" or "spin up another instance". ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
