Everyone,
Thanks in advance for any help. Also I have a gmail invite for the
person who has a fix for this if they are interested.

My company has been using Tomcat for several years, but a problem has
crept up that we have not been able to solve. Basically, tomcat will
stop processing requests for 2-60 second period several times a day.

Here is a list of software that we have tried. (Note we have tried
changing each key componant to see if we isolate the componant that is
the problem, but no luck yet)

OS: RedHat 9 & AS3
Threading model: linux threads & nptl
JVM: sun 1.4.2_4 & latest ibm
Http connector: ajp w/apache 2 and coyote connector
JBDC connector 1.0


1. Doesn't always happen durning old gen garbage collection, but does sometimes
2. Before switching to incremental gc we received out of memory errors
which resulted in Tomcat completly hanging
3. After switching to incremental gc the effect changed to 2-60 second
periods of time that Tomcat won't process request, but it does resume
on its' own.
4. Cpu usage for most of the day is less than 20% utiliztion, but when
the problem occurs the cpu spikes to 100% utiliztion briefly.

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