Bob, the last refuge of a scoundrel / ignoramous is "control blocks". :-) I'd be concerned only if they were below the line. "PCCA" comes to mind but I might've just made that up. :-)
Cheers, Martin Martin Packer, zChampion, Principal Systems Investigator, Worldwide Cloud & Systems Performance, IBM +44-7802-245-584 email: [email protected] Twitter / Facebook IDs: MartinPacker Blog: https://www.ibm.com/developerworks/mydeveloperworks/blogs/MartinPacker Podcast Series (With Marna Walle): https://developer.ibm.com/tv/category/mpt/ From: "Richards, Robert B." <[email protected]> To: [email protected] Date: 12/05/2016 12:30 Subject: Re: Dynamic CPU ADD to a z/OS lpar Sent by: IBM Mainframe Discussion List <[email protected]> I can assure all that it works to ADD with reserved = 0 and without Activate/Deactivate. Once you add with "change running system", you issue a CONFIG CPU command and "Voila!", instant capacity increase. Don't forget that I am currently running a CBU test and had the extra physical processors available but unassigned to any of the normal activation profiles. I do have a follow-up question.... Is anyone aware of a downside to over specifying reserved CPs? Bob -----Original Message----- From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of Christian Borntraeger Sent: Thursday, May 12, 2016 7:10 AM To: [email protected] Subject: Re: Dynamic CPU ADD to a z/OS lpar On 05/12/2016 08:33 AM, Vernooij, CP (ITOPT1) - KLM wrote: > I am quite sure, at least for the z196, that you can online config CPs online, if they have been defined as Reserved. To do so, you must change the LPAR profile and de/reactivate the LPAR. So dynamically, in a running z/OS: no. > > Kees. With all newer machines there is a "logical CPU add" that can add CPUs even if reserved == 0. You will be asked if that should happen for the running system, the profile or both. These CPUs appear then as reserved and can be configured on from the operating system. At least that works with Linux and a z196 and IFLs, so I assume z/OS should be able to do then same. Christian ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN ---------------------------------------------------------------------- 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
