John McClain wrote:
How do I know what memory is expected to be retained by Tomcat outside of my
application classes???? There seems to be caches / pools / classloaders as
almost every GC root. Is there some list out there that defines valid
Catalina GC roots for a running webapplication?? If not, Then how does one
know whether you are looking at a leak or some cache/pool that is managed by
something else, and assumabley works correctly? Also, if we have around 200
static classes, should we increase PermGen or Heap size?
Unit testing. Take your application out of the container and test it.
Even if its a web-app there must be some logical functions within it
that can be broken down to allow standalone testing outside of the
container.
If you can prove that and its not your application outright, this will
leave you with interaction problems or the container itself.
Interaction problems is a very broad scope that covers inappropriate
design patterns through to plain misunderstanding of the respective
servlet container specifications.
You seem pretty sure its your application at fault, so how did you test
it in the first place ?
Darryl
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