Re: Sun JDK on Linux on Z

2009-04-18 Thread Kirk Wolf
I will defer to your judgment that having any kind of Sun JRE is better than an IBM JRE, from a selling point of view. From a technical perspective, we agree that eventually you will need a high-performance JRE. I see a couple of paths: - Port/write a JIT for the Sun JRE for z architecture. A

Re: Sun JDK on Linux on Z

2009-04-18 Thread David Boyes
On 4/18/09 3:47 PM, Kirk Wolf k...@dovetail.com wrote: I will defer to your judgment that having any kind of Sun JRE is better than an IBM JRE, from a selling point of view. Well, not just mine. Part of IBM's investigation into participating in the OpenSolaris project was whether the IBM JDK

Re: Sun JDK on Linux on Z

2009-04-16 Thread Shockley, Gerard C
I will take a copy and will contact you. Gerard -Original Message- From: Linux on 390 Port [mailto:linux-...@vm.marist.edu] On Behalf Of David Boyes Sent: Wednesday, April 15, 2009 3:02 PM To: LINUX-390@VM.MARIST.EDU Subject: Sun JDK on Linux on Z java -version java version 1.6.0_0

Re: Sun JDK on Linux on Z

2009-04-16 Thread David Boyes
On 4/15/09 5:44 PM, Kirk Wolf k...@dovetail.com wrote: Is Java without a JIT compiler really of much practical use? Well, it's a start. It gets us A Java, and there are enough religious differences between the IBM Java implementation and the Sun Java implementation that if you're trying to

Re: Sun JDK on Linux on Z

2009-04-16 Thread Kirk Wolf
On Thu, Apr 16, 2009 at 10:21 AM, David Boyes dbo...@sinenomine.net wrote: Also, this is more about non-vendor code; most of the ISVs do support the IBM code, but customer code is seldom (if ever) tested against it. They support the Sun JDK, and insist on it. That's fine; but without a JIT,

Re: Sun JDK on Linux on Z

2009-04-16 Thread David Boyes
On 4/16/09 5:38 PM, Kirk Wolf k...@dovetail.com wrote: That's fine; but without a JIT, migrating common Java workloads to Solaris z is a non-starter. For the z-architecture, it needs to be a rather sophisticated JIT. Give us a little time, OK? Neale's only had a week or so to get this far.

Sun JDK on Linux on Z

2009-04-15 Thread David Boyes
java -version java version 1.6.0_0 OpenJDK Runtime Environment (IcedTea6 1.4.1) (build 1.6.0_0-b14) OpenJDK 64-Bit Core VM (build 14.0-b08, interpreted mode) -- System Properties--- java.runtime.name : OpenJDK

Re: Sun JDK on Linux on Z

2009-04-15 Thread Kirk Wolf
David, Is Java without a JIT compiler really of much practical use? IBM has made a huge investment in JIT technology for z architecture (z/OS and Linux) in their SDK. It would be much better IMO if IBM offered a Solaris z port of their SDK. After all, if IBM isn't interested in Solaris z

Re: Sun JDK on Linux on Z

2009-04-15 Thread Alan Cox
On Wed, 15 Apr 2009 16:44:21 -0500 Kirk Wolf k...@dovetail.com wrote: David, Is Java without a JIT compiler really of much practical use? In a memory constrained environment a JIT is frequently a lose. There are in fact lots of cases where straight interpreting is better. It is also of course