Red Hat Bugzilla – Bug 169660
Kernel panic when executing 64 bit java app with large memory footprint
Last modified: 2007-11-30 17:07:20 EST
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Description of problem:
This is a dual Opteron system with 8GB of memory. When running the 64 bit version of Sun JRE 1.5.0_05 (the latest at this time) with a heap of 6GB and the server VM, the system reproducibly kernel panics after a few minutes of running the JVM. I don't have a screen grab of the kernel panic, but it does mention the java process and SE linux, so those would be areas to look at.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Run a java server app with the -server option and -Xmx6144m -Xms6144m
2. Sit back for a few minutes
3. Watch the system kernel panic
Actual Results: Kernel panic.
Expected Results: Application running.
A capture of the panic message would be very helpful. Is it in /var/log/messages?
Also, the hardware here seems to be x86_64, not ia64?
Oh yes, x86_64 is correct. I checked /var/log/messages, but there are no panic
messages in there. I've photographed the screen with my cameraphone and attached
it to the ticket, I hope this helps. This time around, I wasn't even running a
Java app, I was just grepping /var/log/messages for the word "panic" -- which
caused it to panic. :)
Created attachment 119713 [details]
Screenshot of the panic
Seems updating to the -22 kernel made a difference. No crashing since I
upgraded. I'll close this ticket for now.