Re: [5.0.1-dev] Testing with JRockit 8
I just ran a half dozen benchmarks with bea JRockit jdk1.4.1 for linux. The performance was better until it locked up bad and required a hard reset. One thing I noticed is the memory usage was almost double and the CPU usage was also higher. The numbers were consistently better than both sun and ibm jdk, but on my 8th benchmark it locked up bad. I have no idea why, but it would seem like there is a stability issue with the linux version of JRockit. The system i'm running on is RedHat 8.0 on a AMD XP 2ghz and 1gig of DDR RAM. peter Remy Maucherat [EMAIL PROTECTED] wrote:For my book, I have been testing Tomcat with JRockit. I tested on a Win2k / Linux dual boot box, so it has the advantage of allowing to compare OSes :) The result: - on Windows, its performance was pretty much amazing (it *did* actually beat IBM on Linux, which was previously making Windows look really bad). - on Linux, it locks up the computer after a few requests and I have to kill -9 all Java threads individually (why ?). I don't think there's a problem with Tomcat which would cause that. For the record, I was using RH 8 with the latest kernel patch (the one Costin says is bad in his weblog ;-) ). The main disadvantage of JRockit is its insane memory usage (basically, it's 2* Sun Hotspot client; maybe there will be a use for those Athlon 64s even for small servers after all ;-) ). The other result is that Tomcat on Linux appears to run more reliably than Tomcat on Windows (except for the socket lingering bug that did cause problems), as on Windows, with all VMs, a few connections are rejected (while it never happens on Linux). I don't believe this behavior is caused by a Tomcat bug. Any comments, or anyone able to reproduce this ? Remy - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - Do you Yahoo!? Yahoo! Shopping - Send Flowers for Valentine's Day
RE: [5.0.1-dev] Testing with JRockit 8
I have a build from cvs of 5.0 running on RH 8 JDK 1.4.1 and have had no problems, but have not been doing performance testing. -Original Message- From: Remy Maucherat [mailto:[EMAIL PROTECTED]] Sent: Thursday, February 13, 2003 9:18 AM To: Tomcat Developers List Subject: [5.0.1-dev] Testing with JRockit 8 For my book, I have been testing Tomcat with JRockit. I tested on a Win2k / Linux dual boot box, so it has the advantage of allowing to compare OSes :) The result: - on Windows, its performance was pretty much amazing (it *did* actually beat IBM on Linux, which was previously making Windows look really bad). - on Linux, it locks up the computer after a few requests and I have to kill -9 all Java threads individually (why ?). I don't think there's a problem with Tomcat which would cause that. For the record, I was using RH 8 with the latest kernel patch (the one Costin says is bad in his weblog ;-) ). The main disadvantage of JRockit is its insane memory usage (basically, it's 2* Sun Hotspot client; maybe there will be a use for those Athlon 64s even for small servers after all ;-) ). The other result is that Tomcat on Linux appears to run more reliably than Tomcat on Windows (except for the socket lingering bug that did cause problems), as on Windows, with all VMs, a few connections are rejected (while it never happens on Linux). I don't believe this behavior is caused by a Tomcat bug. Any comments, or anyone able to reproduce this ? Remy - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: [5.0.1-dev] Testing with JRockit 8
John Trollinger wrote: I have a build from cvs of 5.0 running on RH 8 JDK 1.4.1 and have had no problems, but have not been doing performance testing. Tomcat 4 or 5 is running fine on RH 8 for me (obviously) with Sun or IBM VMs. I was talking specifically about Tomcat 5 (4 is likely the same) + JRockit 8 on RH 8.0. As the VM was really fast on Windows, and the IBM VM on Linux was otherwise making the Sun VMs for Windows look bad, I wanted to compare with JRockit on the same OS. Remy - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
