Seeing that your error goes away when you give the app more mem, you
can fix up logging to use ERXPatternLayout and use
%V{u used/f free} ... normal stuff
This will output
75.22 MB used/12.86 MB free .. normal stuff
So you can see how much the app really takes. I also recently added
some stuff in ERXApp to refuse new sessions if a certain free mem
threshold is reached. This has made our deployments way more reliable.
Cheers, Anjo
Am 30.11.2007 um 22:14 schrieb Simon McLean:
Thought I would keep the list up-to-date on our deadlock issue, in
case anyone else suffers something similar.
We've narrowed down the problem to ERJGroupsSynchroniser: if we
reduce the number of entities being synchronised to just a few
critical entities, rather than the whole model (which has around 30
entities) then the app runs fine. We are still not sure what is
actually happening to the app to cause the deadlock when we don't
limit the entities. We are sure it isn't actually running out of
memory because there is no hint of it in the logs and we know the
JVM is still alive. However increasing the heap allocated to the app
seems to let us synch more entities ? I'm wondering whether the app
is just getting flooded with updates and if we did actually leave
the "deadlocked" app for a few hours it might actually recover, but
alas we don't have the luxury of a few hours in production and we
don't seem able to load the app enough in development to simulate
the deadlock.
Anyway, we do now have a stable app once again, and I can sleep
tonight :-) Many thanks once again to all those who have helped me
with this one - it's much appreciated.
Simon
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