The new instructions on the z10 are interesting and offer some opportunities for improvement. We are still experimenting. There have been some surprises but that's what makes this job fun.
John Reda Syncsort, Inc. -----Original Message----- From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On Behalf Of Edward Jaffe Sent: Friday, March 14, 2008 1:57 PM To: [email protected] Subject: Re: z/OS 1.7 to z/OS 1.9 Migration - Increase in CPU/MSU Consumption <snip> IBM is scraping the bottom of the barrel looking for performance these days. Example: the z10 added a bunch of new instructions that make compare/jump faster by not surfacing the condition code to later instructions in the pipeline. They even added instructions to help an application micro-manage its cache usage! Pipeline/cache issues used to be something only SYNCSORT and similar utilities cared about. Now everyone's doing it! -- Edward E Jaffe Phoenix Software International, Inc 5200 W Century Blvd, Suite 800 Los Angeles, CA 90045 310-338-0400 x318 [EMAIL PROTECTED] http://www.phoenixsoftware.com/ ---------------------------------------------------------------------- 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
