> -----Original Message----- > From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On > Behalf Of Ledbetter, Scott E > Sent: Friday, June 18, 2004 1:25 PM > To: [EMAIL PROTECTED] > Subject: Re: J2EE performance? > > > I think IBM recognizes that JAVA is a bit of a hog on > zSeries, which is why > they have come out with the zAAP features, which are basically JAVA > coprocessors for zSeries 890 and 990. > > No support for Linux yet, as far as I know. Maybe a future? > > http://www-1.ibm.com/servers/eserver/zseries/zaap/ > > Scott L.
Scott, >From what I was told on IBM-MAIN, the zAAP is not a "Java coprocessor" with a different instruction set. I was told that it was another CP which runs "normal" zArch instructions, but like an IFL, will not run regular z/OS or "legacy" code. Also, to use it requires z/OS 1.6 because that is where the code is which understands what a zAAP is and how to dispatch work onto it. There was a brief discussion about the possiblity of somebody figuring out how to mark COBOL code as "java" and so get it to run on the zAAP. I can think of ways to stop this. And if I can think of them, you can be sure that IBM can <grin>. IIRC, it will also require a special JVM implementation, different from the current z/OS JVM. IOW - in a Linux environment, just get another IFL -- John McKown Senior Systems Programmer UICI Insurance Center Information Technology This message (including any attachments) contains confidential information intended for a specific individual and purpose, and its' content is protected by law. If you are not the intended recipient, you should delete this message and are hereby notified that any disclosure, copying, or distribution of this transmission, or taking any action based on it, is strictly prohibited. ---------------------------------------------------------------------- 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
