We also use the HMC to hard cap test lpars during certain day hours. They are not able to spike above their allocated weights and use production resources during these times.
Tammi Marsan MF Performance & Tuning -----Original Message----- From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of John McKown Sent: Tuesday, December 30, 2008 10:41 AM To: [email protected] Subject: Re: Need to cap my software costs On Tue, 30 Dec 2008 09:33:44 -0600, Hal Merritt <[email protected]> wrote: >We have a temporary need to cap our overall rolling four hour average >until the new box arrives. We are running z/os 1.7 on a z/9 and, as >far as I know, don't have the ability to do that. Our particular >mission has one most loved LPAR that we'd prefer to run at the expense of all else. Assign the LPAR weights appropriately on the HMC. > > >We have enough power so that we are worried only about some occasional >spikes that the normal soft capping won't handle to suit us. Hard cap the LPAR weights on the HMC for the "unloved" LPARs. That way, they get __at most__ their weight, regardless of what any other LPAR is doing. This does introduce more PR/SM overhead to manage the "unloved" LPARs. > >I know this has been discussed before, but I'm wondering what the >current consensus might be for our situation. > > > >For example, what if I really skew the weights such that the unloved >LPAR's are starved if the most loved needs the cycles. If the unloved >LPARS are starved, then they should not be able to rack up MSU's and >thus lower my total. > > > >Thanks > ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
