Re: Problem with JVM, and Tomcat tuning

2007-06-18 Thread Jacob Bunk Nielsen
Rainer Jung [EMAIL PROTECTED] writes: Give us a look at your hotspot error files. I have put a few online at http://flof.dk/~jbn/hs_err/ - now that I look at it two of them are OutOfMemory-errors. I newer had those with Java5, but Sun has accepted a bugreport about it, and we are communicating

Re: Problem with JVM, and Tomcat tuning

2007-06-18 Thread Mark Thomas
Jacob Bunk Nielsen wrote: Rainer Jung [EMAIL PROTECTED] writes: Give us a look at your hotspot error files. I have put a few online at http://flof.dk/~jbn/hs_err/ - now that I look at it two of them are OutOfMemory-errors. The first 2 are Java2D problems, not Tomcat issues. Sun need to

Re: Problem with JVM, and Tomcat tuning

2007-06-18 Thread Jacob Bunk Nielsen
Mark Thomas [EMAIL PROTECTED] writes: Jacob Bunk Nielsen wrote: Rainer Jung [EMAIL PROTECTED] writes: Give us a look at your hotspot error files. I have put a few online at http://flof.dk/~jbn/hs_err/ [...] The first 2 are Java2D problems, not Tomcat issues. Sun need to take a look at

Re: Problem with JVM, and Tomcat tuning

2007-06-18 Thread Rainer Jung
I agree with Mark, two of those look like coming from the Java 2D disposer thread, and the other two - as you already observed - come from OutOfMemory related to growableArray. A quick look into the bug database shows, that both areas unfortunately seem to be notorious for JVM crashes. There

Re: Problem with JVM, and Tomcat tuning

2007-06-18 Thread Jacob Bunk Nielsen
Rainer Jung [EMAIL PROTECTED] writes: I agree with Mark, two of those look like coming from the Java 2D disposer thread, and the other two - as you already observed - come from OutOfMemory related to growableArray. A quick look into the bug database shows, that both areas unfortunately

Re: Problem with JVM, and Tomcat tuning

2007-06-16 Thread Jacob Bunk Nielsen
Peter Crowther [EMAIL PROTECTED] writes: Jacob, are you *absolutely* sure the hardware is solid? Does anything else ever crash? Does the same setup work on another machine (I appreciate this is not always easy to test)? Yes, I'm quite sure the hardware is solid. Actually I'm running the

Re: Problem with JVM, and Tomcat tuning

2007-06-16 Thread Jacob Bunk Nielsen
Andrew Miehs [EMAIL PROTECTED] writes: What messages are you getting 'EXACTLY'? From one of the hs_err_pid.log: # # An unexpected error has been detected by Java Runtime Environment: # # SIGSEGV (0xb) at pc=0xb7ec6e9c, pid=13753, tid=719874992 # # Java VM: Java HotSpot(TM) Server VM

Re: Problem with JVM, and Tomcat tuning

2007-06-16 Thread Jacob Bunk Nielsen
Rainer Jung [EMAIL PROTECTED] writes: Give us a look at your hotspot error files. I'll put a few online when I get back to work on Monday. If double free is really the reason it won't be caused by a pure Java Tomcat, instead it could be native libs integrated into your webapps by JNI or a

Re: Problem with JVM, and Tomcat tuning

2007-06-16 Thread Rainer Jung
No, sorry I misread you mail telling us that you upgraded from 1.5.0_09. Java 6 should be OK, there is a 1.6.0_01 out for a couple of weeks now. Still interested in your hotspot error files next week. Regards, Rainer Jacob Bunk Nielsen schrieb: Rainer Jung [EMAIL PROTECTED] writes: Give us

Problem with JVM, and Tomcat tuning

2007-06-15 Thread Jacob Bunk Nielsen
Hi I'm running Tomcat 6.0.13 on Sun Java6 and Linux. I upgraded from Tomcat 5.5.17 and Java5 update 9 a couple of weeks ago. I experience random crashes of the JVM on a daily basis. It simply fails with segmentation faults, double frees and similar. Are any of you experiencing similar problems?

Re: Problem with JVM, and Tomcat tuning

2007-06-15 Thread Mark Thomas
Jacob Bunk Nielsen wrote: If I submit a bug report with Sun I get a reply that I should contact Apache because the problem seems to be triggered by Tomcat. Is anyone at Apache interested in those hs_err_PID.log files generated by the JVM? If you are using the native connector, it is possible

Re: Problem with JVM, and Tomcat tuning

2007-06-15 Thread Jacob Bunk Nielsen
Hi Mark Thomas [EMAIL PROTECTED] writes: Jacob Bunk Nielsen wrote: If I submit a bug report with Sun I get a reply that I should contact Apache because the problem seems to be triggered by Tomcat. Is anyone at Apache interested in those hs_err_PID.log files generated by the JVM? If you are

Re: Problem with JVM, and Tomcat tuning

2007-06-15 Thread Hassan Schroeder
On 6/15/07, Jacob Bunk Nielsen [EMAIL PROTECTED] wrote: I'm running Tomcat 6.0.13 on Sun Java6 and Linux. I experience random crashes of the JVM on a daily basis. It simply fails with segmentation faults, double frees and similar. Are any of you experiencing similar problems? I had the same

Re: Problem with JVM, and Tomcat tuning

2007-06-15 Thread Andrew Miehs
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 On 15/06/2007, at 4:36 PM, Peter Crowther wrote: From: Hassan Schroeder [mailto:[EMAIL PROTECTED] On 6/15/07, Jacob Bunk Nielsen [EMAIL PROTECTED] wrote: I experience random crashes of the JVM on a daily basis. It simply fails with segmentation

RE: Problem with JVM, and Tomcat tuning

2007-06-15 Thread Peter Crowther
From: Hassan Schroeder [mailto:[EMAIL PROTECTED] On 6/15/07, Jacob Bunk Nielsen [EMAIL PROTECTED] wrote: I'm running Tomcat 6.0.13 on Sun Java6 and Linux. I experience random crashes of the JVM on a daily basis. It simply fails with segmentation faults, double frees and similar. Are

Re: Problem with JVM, and Tomcat tuning

2007-06-15 Thread Rainer Jung
Give us a look at your hotspot error files. Do they look very close to each other, or do they show very different stacks as the reason for the crash? If double free is really the reason it won't be caused by a pure Java Tomcat, instead it could be native libs integrated into your webapps by