On Fri, 6 Sep 2019 at 12:50, Charles Mills <[email protected]> wrote: > > > If an elligible SRB process is established will that automatically run on > > zIIP or do we have to do something else? > > Others have beaten this general topic pretty well to death but let me address > just that one question. The answer is No. You can only > mark something "zIIP-eligible." It will only run on a zIIP if one is > available. A zIIP-eligible SRB runs on a standard processor if no > zIIP is available at the moment.
There is a little more subtlety to all this... First, there is an entirely legitimate way to make your application code zIIP-eligible: write it in Java. If that's not going to fly, perhaps you can find a COBOL to Java translator. Second, not all zIIP-eligible work runs in SRB mode. Certainly all that zIIP-legit JVM code does not. IBM knows how to dispatch TCBs on a zIIP, but they don't tell even ISVs how to do it. I believe that is what Neon Systems figured out on their own, and offered to their customers, presumably to their eventual regret. (To be clear, *I* have no idea how to do it, and I am not recommending that you try.) Third, I understand that the new zCX container stuff is or can be made zIIP-eligible. If you think can run your COBOL programs in that environment, it might be to your advantage. Tony H. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
