Jim, Then I am to understand that your guess is probably close to 1:1, all other things being equal and not exactly favoring the strengths of the particular platform?
Your other advice is well-taken and I will suggest to the pSeries person that asked me the question in the first place that he follow-up with IBM on it. Bob Richards -----Original Message----- From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of Jim Elliott <[EMAIL PROTECTED]> Sent: Friday, December 08, 2006 5:39 PM To: LINUX-390@VM.MARIST.EDU Subject: Re: WAS on zAAP versus pSeries > Does anyone have an idea how running WebSphere Application > Server on z/OS on a System z zAAP would compare to running it > on "x" number of processors of a P595 at 1.9GHZ? > Any good guesses on the value of "x" here? > What if it was an IFL instead? Bob: This is a hard question to answer. A z9 EC processor runs at 1.75GHz but you can't really compare z9 GHz to p5 GHz (totally different chip designs). An IFL, a zAAP, and a CP run at the same speed (unless you have a "sub-capacity" CP). Of course it really depends on the total application. If you are doing a lot of I/O (say a database back-end), then a z9 will probably outperform a p5 with the same number of processors. If the application is compute bound (not likely), the a p5 will probably outperform at z9. z9 virtualizes (in the general sense of running multiple concurrent workloads) better than any other platform so if you are running lots of WAS images z9 will probably perform better. You really need to get IBM WAS people involved who can look at your workload and give you specific advise. Of course, talking to other customers who are running WAS on z9 is a great way to get an idea. There are lots of customers running WAS on both z9 and p5 so talk to your IBM rep to set up some calls with other customers! Jim LEGAL DISCLAIMER The information transmitted is intended solely for the individual or entity to which it is addressed and may contain confidential and/or privileged material. Any review, retransmission, dissemination or other use of or taking action in reliance upon this information by persons or entities other than the intended recipient is prohibited. If you have received this email in error please contact the sender and delete the material from any computer. SunTrust and Seeing beyond money are federally registered service marks of SunTrust Banks, Inc. [ST:XCL] ---------------------------------------------------------------------- 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
