Thankyou so very much Messieurs Sipples and Kelman, perfect. John Donnelly National Semiconductor Corporation 2900 Semiconductor Drive Santa Clara, CA 95051
408-721-5640 408-470-8364 Cell cjp...@nsc.com -----Original Message----- From: IBM Mainframe Discussion List [mailto:ibm-m...@bama.ua.edu] On Behalf Of Timothy Sipples Sent: Thursday, August 19, 2010 5:14 AM To: IBM-MAIN@bama.ua.edu Subject: Re: CPU Utilization after upgrade z800 to z10 In IBM's LSPR (Large Systems Performance Reference) documentation for System z, a 2066-002 has a PCI rating of 319. A 2098-O02 has a PCI rating of 358. *On average* your new machine will deliver a little over 12% more performance/throughput compared to your old one. (And it will do so with 44 MSUs full capacity compared to 60 MSUs for your previous machine. Moving from a z800 to a z10 BC is a very nice triple "technology dividend" move.) For example, if you were running at 85% utilization on your z800, you would be consuming about 271.15 PCIs at peak. That same workload would, on average, consume about 75.7% of your 2098-O02 machine (271.15 divided by 358). That's a drop of 9.3 percentage points. So a drop of 10 percentage points in utilization would be right about what you would expect with such a move -- perhaps even a little better than average expectation, which is always nice. The "on average" is extremely important -- results can and do vary, workloads vary, and the z10 BC is not the same processor as a z800. (There are a lot of nice technical changes between those two.) Also, I am not factoring in specialty engines and numerous other factors that might influence the math. But, at least with this very quick sample calculation, what you're observing doesn't seem at all surprising. You can find the LSPR data here: https://www-304.ibm.com/servers/resourcelink/lib03060.nsf/pages/lsprindex?OpenDocument Congratulations! - - - - - Timothy Sipples Resident Enterprise Architect STG Value Creation & Complex Deals Team IBM Growth Markets (Based in Singapore) E-Mail: timothy.sipp...@us.ibm.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 ---------------------------------------------------------------------- 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
