I would expect PROJECTCPU to be pretty accurate as I would expect it to work off when the task is marked zIIP-eligible. Certainly the numbers I've seen for zIIP- (and zAAP-) eligible CPU have "behaved" reasonably.
Cheers, Martin Martin Packer, zChampion, Principal Systems Investigator, Worldwide Banking Center of Excellence, IBM +44-7802-245-584 email: [email protected] Twitter / Facebook IDs: MartinPacker Blog: https://www.ibm.com/developerworks/mydeveloperworks/blogs/MartinPacker From: Bob Shannon <[email protected]> To: [email protected] Date: 31/10/2013 13:41 Subject: Re: zIIP simulation Sent by: IBM Mainframe Discussion List <[email protected]> >So now we approach the nub of the matter (for us non-illuminated peons). >how does code indicate it is "zIIP capable" ? When a pre-emptible SRB is created a "secret handshake" (an API) is used to make it eligible to be dispatched on a zIIP; if the work is not zIIP eligible or if there are no zIIPs available the work is dispatched on a CP. The documentation to use the API is available to ISVs who sign an NDA. It is not publically available. >what if it is running as a TCB in a non-zIIP enabled machine ?. I think this question is based on my misstatement. zIIP-eligible work does not run in TCB mode when a zIIP isn’t available so as far as zIIP usage is concerned this question is a non sequitur. Sorry for the confusion. > how far can we (aforementioned peons) trust the numbers from PROJECTCPU and Als offering in such situations ?. No idea. I'm sure Al can explain. Bob Shannon Rocket Software ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN Unless stated otherwise above: IBM United Kingdom Limited - Registered in England and Wales with number 741598. Registered office: PO Box 41, North Harbour, Portsmouth, Hampshire PO6 3AU ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
