I know that database stuff should be mostly IO, but I usually find that there are stored procedures and stuff that do a lot of compute stuff. If that is the case with your test then the MIPS become important. I don't know the MIPS of the z890, but I am going to guess that it is about 650. The MIPS on a PPC5 at 1.6GHz is going to be over 1600. With two of them you are going to have over 3200 MIPS. That is a lot more compute power then you have on the z890. I know you can't compare MIPS on different architectures, but still the Power system has a big advantage.
-----Original Message----- From: Linux on 390 Port [mailto:[EMAIL PROTECTED] Behalf Of Walter Marguccio Sent: Monday, October 23, 2006 3:01 AM To: [email protected] Subject: zLinux experience this has been cross-posted to the ibmmain-list 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 pSeries Power 3, two PPC3 @ 450 MHz; Intel-based board with two Pentium 3 @ 933 MHz; z890, 1IFL @ 1,3GHz (?) OpenPower 720, 2 PPC5 @ 1,6 GHz and all benchmarks show that our IFL is *FAR* behind the Power5 architecture (round 20.000 Eur). Somehow, too slow to be true .... Without not going too much in detail about what the benchmarks did, they performed operations like loading and selects over joined tables - basic database I/O tasks. Either we are doing something conceptually wrong, or we are expecting too much from the IFL and/or zLinux. Comments, remarks, recommendations, pointer to further documentation are really welcome. Regards. Walter Marguccio z/OS Systems Programmer Munich - Germany ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
