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
