This is an interesting question, and I would be interested in an answer myself. I know that if you had several LPARs with the sum off the weights being 1000, but you didn't have any capping then L1 with a weight of 80 would get (80/1000)*100 or 8% of the total machine, and L2 would get 2% if the CPU hits 100% utilization. However, I'm not sure what happens with you have group capping. We don't have that here yet because we're still on z/OS 1.7 so we have each LPAR capped separately. I would guess the L1 would get 80% of 50 MSUs and L2 would get 20% of 50 MSUs. Therefore, they'd get 40 and 10 MSUs respectively, or whatever that translates to in MIPS for your processor.
Tom Kelman Enterprise Capacity Planner Commerce Bank of Kansas City (816) 760-7632 > -----Original Message----- > From: IBM Mainframe Discussion List [mailto:ibm-m...@bama.ua.edu] On > Behalf Of Werner Kuehnel > Sent: Thursday, February 26, 2009 2:07 AM > To: IBM-MAIN@bama.ua.edu > Subject: Group Limit and Weights > > We have some problems to understand the relation between group limit and > weights. > Let's say we have a CEC with 1000 MSUs, and 2 LPARs defined in an lpar > group with "defined MSU" = 0 and a group limit of 50 MSUs. > The weights however are 80 (L1) and 20(L2) (sum of all weights is 1000) > and so twice the size than the group limit. > Now when the sum of both 4h avgs exceeds 50 capping is turned on on both > lpars. > Is the proportion of capacity each lpar gets under capping determined by > the ratio of the weights, so that L1 gets four times as much as L2? > What is the max capacity under capping each lpar gets? Is it determined by > the group limit or the weights? > I know that weights come into play when the CEC runs 100% busy, then they > guarantee the min capacity for each lpar. But what role do they play under > capping in an lpar group? > If someone has some more insight in this area I'd appreciate any help. > > Werner Kuehnel > > ---------------------------------------------------------------------- > 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
