Cobe, Another thing is that as someone posted it looks like your trying to use the hard cap by setting a weight of 160 with a dummy LPAR weighted at 10. That gives the real LPAR about 94% of the machine (160/(160+10)). You then talk about wanting to set it to 24 out of 26 MSUs. That comes to around 92%. Your kind of comparing apples to oranges. Besides, the software MSU figure is not the best thing to use for performance and capacity planning studies. It was designed by IBM solely as a way to keep software costs down. The software MSU to machine power ratio has been changing to the customers favor with each new hardware release.
Tom Kelman Capacity Planning Commerce Bank, Kansas City -----Original Message----- From: IBM Mainframe Discussion List [mailto:ibm-m...@bama.ua.edu] On Behalf Of Cobe Xu Sent: Thursday, November 04, 2010 11:44 AM To: IBM-MAIN@bama.ua.edu Subject: Re: CPU capping is not working for one Lpar only on CEC? Response to "what am I trying to do?", I'm working on a yearly performance & capacity review, and saw many many occasions that CPU overshoot the CAP line about 3%. And I try to figure this out. Thanks all, will check the PR/SM manual for the 1~3% saying. On Thu, Nov 4, 2010 at 11:49 PM, Al Sherkow <a...@sherkow.com> wrote: > That 3% is not unexpected. WLM works with PR/SM to implement the cap. WLM > does the math and PR/SM does the actually "capping". If you read the PR/SM > planning guides (as Peter referenced) you'll see that PR/SM manages LPARs > to +- > 3 percent. > > I believe that WLM does the calculation to account for the possible MINUS > 3%. If > you were trying to cap at 100 MSUs and you only got 97 MSUs while paying > for > 100 you would be upset. If you pay for 100MSUs and get 3 Bonus MSUs you are > a > satisfied customer. (I chose 100 MSUs to make the math easy) > > Al Sherkow, I/S Management Strategies, Ltd. > Consulting Expertise on Capacity Planning, Performance Tuning, > WLC, LPARs, IRD and LCS Software > Seminars on IBM SW Pricing, LPARs, and IRD > Voice: +1 414 332-3062 > Web: www.sherkow.com > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO > Search the archives at http://bama.ua.edu/archives/ibm-main.html > -- Cobe Xu Best Regards ----------------------------------------------------------- zOS Performance & Capacity Analyst E2E Performance Analyst Email: cob...@gmail.com ----------------------------------------------------------- ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html ***************************************************************************** If you wish to communicate securely with Commerce Bank and its affiliates, you must log into your account under Online Services at http://www.commercebank.com or use the Commerce Bank Secure Email Message Center at https://securemail.commercebank.com NOTICE: This electronic mail message and any attached files are confidential. The information is exclusively for the use of the individual or entity intended as the recipient. If you are not the intended recipient, any use, copying, printing, reviewing, retention, disclosure, distribution or forwarding of the message or any attached file is not authorized and is strictly prohibited. If you have received this electronic mail message in error, please advise the sender by reply electronic mail immediately and permanently delete the original transmission, any attachments and any copies of this message from your computer system. ***************************************************************************** ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
