Ian Hunter wrote:
Where do I find the output from --verbose:gc -- I don't see anything
new in geronimo.log.
The output should be in var/log/geronimo.out (its located alongside with
geronimo.log) or it may be printed in the console depending on the
method you use to start the server.
regards
Peter Petersson
------------------------------------------------------------------------
*From:* Kevan Miller [mailto:[EMAIL PROTECTED]
*Sent:* Thursday, July 19, 2007 10:41 AM
*To:* [email protected]
*Subject:* Re: Strange memory problems / white screens
On Jul 19, 2007, at 10:14 AM, Ian Hunter wrote:
We've noticed a problem where intermittently Geronimo starts failing
to respond to web requests (browser symptom is a blank white screen)
-- when this starts happening, we notice that on the system info tab,
the memory metrics display "Not Yet Available" but after we restart
Geronimo completely, web requests work and the memory values display.
Has anyone else seen anything like this?
Hi Ian,
Any errors showing up in var/log/geronimo.log? Is this behavior truly
intermittent or somewhat predictable? I would suspect that you have a
memory leak... Have you tracked memory utilization?
I've found the following useful:
export JAVA_OPTS=" -verbose:gc -XX:+PrintGCDetails
-XX:+HeapDumpOnOutOfMemoryError"
First two options will cause GC statistics to be printed by the JVM.
HeapDumpOnOutOfMemoryError will cause a heap dump to be created on
OOME conditions. Very handy for post-mortem analysis... There's no
overhead associated with this setting (only pay a cost when you run
out of memory).
--kevan
