On Jan 7, 2011, at 15:36, Darren Govoni <dar...@ontrenet.com> wrote:

That's a good thought.

I just wish I knew how to interpret the JVM fatal error. I rarely ever see them working with straight java, so I'm also wondering if something else is at play. Its pretty predicatable when it happens.
Like at either a vm.detachCurrentThread

Oh. I have no confidence in detachCurrentThread(). Can you pool and reuse threads instead ?

Andi..

or perhaps when an object attached to the current thread
goes out of scope, but in a stressed environment.

On 01/07/2011 06:09 PM, Andi Vajda wrote:

On Fri, 7 Jan 2011, Darren Govoni wrote:

I'll try that and report.

It seems to happen when many threads are attached at once and the CPU throttles.

Maybe some GC settings could also help work around this ?

Andi..


On 01/06/2011 09:42 PM, Andi Vajda wrote:

On Thu, 6 Jan 2011, Darren Govoni wrote:

Hi,
I am getting these JVM fatal errors:

#
# A fatal error has been detected by the Java Runtime Environment:
#
#  SIGSEGV (0xb) at pc=0x00007f11dc3c093a, pid=6268, tid=139711024641792
#
# JRE version: 6.0_21-b06
# Java VM: Java HotSpot(TM) 64-Bit Server VM (17.0-b16 mixed mode linux-amd64 )
# Problematic frame:
# C [libjcc.so+0xa93a] _ZNK6JCCEnv21getObjectArrayElementEP13_jobjectArrayi+0x2a
#
# An error report file with more information is saved as:
# /home/darren/Gridwave/product/trunk/symphony/server/software/ hs_err_pid6268.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
#

They seem to happen sporadically in a multithreaded situation where many threads (attached, etc) are accessing the same index.

Is there anything I can do on my end to correct this?

I've never seen this. Maybe getting a newer JVM ?

Andi..

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