On Monday, 10/02/2006 at 07:24 MST, Walter Marguccio <[EMAIL PROTECTED]> wrote: > we are a shop with a z890-230 with three zOS.e LPARs in Basic Sysplex. We'd be > really happy to consolidate some of our applications running right now on > Blades and/or pSeries on the mainframe due to reliability and scalability of > the latter. Within the Try&Buy agreement with IBM we got one IFL and 16 GB > memory on the fly (just a microcode update), added two zLinux LPARs to be run > in native and installed DB2 8.2.2 onto SuSE Enterprise 9. Well, the first > results we have been having are pretty discouraging. We have been running some > benchmarks in form of scripts on 4 different machines
Benchmarks are always dangerous. They typically hilight a single area of the technology rather than giving you an idea how the solution will scale to your CPU, I/O, and availability requirements. That said, Linux on System z has to be tuned. You don't just plunk it down and go, as many of the kernel and middleware default values are biased towards Intel implementations. There are very specific DB2 tuning instructions for Linux on z that can be found at http://www-128.ibm.com/developerworks/linux/linux390/perf/tuning_rec_database_DB2_param.html. This just one part of a collection of Linux on System z tuning hints and tips. As John suggests, you will get far more help and insight over on the LINUX-390 list. Alan Altmark z/VM Development IBM Endicott ---------------------------------------------------------------------- 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
