Leland, Please define "dedicated".
IIUC, "dedicated" really pertains to the LPAR definition. If an engine/CPU of any type) is "dedicated" at the LPAR definition and the HMC, that LPAR is only place it can be used. If the engine/CPU is not dedicated, then it can be varied off one LPAR, and varied on to a different LPAR. But as I understand it at this time, when you vary a CPU offline from an LPAR, you are actually varying a real physical **CPU's worth of resources** offline to one LPAR, and onto another LPAR. Unless the physical CPU is dedicated in the LPAR definition, PR/SM is handing you virtualized CPUs, not real CPUs. LPAR weighting may be a better direction that varying CPUs on and offline to affect performance. And weighting is dynamic, much faster than anyone entering vary commands. At one point in the distant past, messages from PR/SM were issued with the prefix "DMK"... the precursor to today's "HCP". One could easily see PR/SM's dyed roots showing. :-) Now I'll sit back and let the experts tell me what I've misunderstood _this_ time. Mike Walter Aon Corporation The opinions expressed herein are mine alone, not my employer's. "Leland Lucius" <lluc...@homerow.net> Sent by: "The IBM z/VM Operating System" <IBMVM@LISTSERV.UARK.EDU> 04/11/2011 03:49 PM Please respond to "The IBM z/VM Operating System" <IBMVM@LISTSERV.UARK.EDU> To IBMVM@LISTSERV.UARK.EDU cc Subject Dedicating CPUs to an LPAR I should know this, but my aging mushy stuff just isn't working for me today. If we define multiple z/VM LPARs with dedicated IFLs, can those IFLs be moved from one LPAR to another? Is it as simple as "vary off..." and "vary on..."? Thanks, Leland The information contained in this e-mail and any accompanying documents may contain information that is confidential or otherwise protected from disclosure. If you are not the intended recipient of this message, or if this message has been addressed to you in error, please immediately alert the sender by reply e-mail and then delete this message, including any attachments. Any dissemination, distribution or other use of the contents of this message by anyone other than the intended recipient is strictly prohibited. All messages sent to and from this e-mail address may be monitored as permitted by applicable law and regulations to ensure compliance with our internal policies and to protect our business. E-mails are not secure and cannot be guaranteed to be error free as they can be intercepted, amended, lost or destroyed, or contain viruses. You are deemed to have accepted these risks if you communicate with us by e-mail.
