Crispin Hugo wrote:
Hi, We are hopefully going from a z9 to z10 processor. I would like to have 4 CP's instead of our current 2 CP's so our configuration is more flexible. We are not worried about licensing costs of multiple processors. The overall MIPage would be the same, whether we have 2 or 4 CP's
We went from a three-way z9 to a four-way z10 and added a zIIP. We have a lot of LPARs including several z/OS, z/VM, z/VSE, and Linux for z. Performance overall seems more balanced and consistent and the extra CP comes in handy when setting up LPAR configurations. We offset some of the individual CP performance downgrade issues by upgrading our DASD to 2107, which runs circles around our old 2105. So, I/O-related processes run much faster than before. However, you can *definitely* tell that long CPU-bound processes, such as HLASM jobs, initializing dumps under IPCS, or mapping large modules in z/XDC, etc. take longer to complete. Our product code runs on zIIP, so it executes *really* fast compared to IBM code running on the CPs. We enabled the zAAP on zIIP feature and now Java code runs fast too, which really helped out TOMCAT and Websphere. YMMV.
-- Edward E Jaffe Phoenix Software International, Inc 831 Parkview Drive North El Segundo, CA 90245 310-338-0400 x318 edja...@phoenixsoftware.com http://www.phoenixsoftware.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
