Yikes, We have someone from IBM Marketing now making the statement, "I have confirmed...no MP factor with IFLs....". That is the entire statement, all of the dots included. I did not replace anything with ellipses. Somehow, that does not ring true. I mentioned that the rating of an IFL is the same as that of an ordinary CPU and someone went to marketing for "the real answer".
Perhaps they should have said, "No different MP factor for IFLs than for regular CPUs, they are the same in that regard." That would make more sense. Anyone from IBM care to comment - you will probably be quoted. Regards, Richard Schuh > -----Original Message----- > From: The IBM z/VM Operating System > [mailto:[email protected]] On Behalf Of Brian Nielsen > Sent: Tuesday, January 27, 2009 12:13 PM > To: [email protected] > Subject: Re: CPU Power > > On Tue, 27 Jan 2009 13:56:34 -0500, Alan Altmark > <[email protected]= > > > wrote: > > >Does this help? (It's z/VM 5.3) > >http://www.vm.ibm.com/perf/reports/zvm/html/mt31cpus.html > > > >I infer from the chart that up to 6 CPUs, the MP effect is nearly > >unnoticeable. > > As stated in the text, the chart shows the ratio of the MP > effect between= > > the 2 z/VM releases using z/VM 5.3 on 6 CPU's as the > baseline. For up to= > > 6 CPU's the conclusion would be that both releases perform > reasonably similarly. > > To determine the magnitude of the MP effect at 6 CPU's would > require running a test with 1 CPU and comparing the ITR > ratios to see how close t= o a 6:1 ratio they are. > > Brian Nielsen >
