I've figured out it's due to a cache memory usage problem.
Sorry, Ferg.
-Wesley
----- Original Message -----
From: "wesley" <[EMAIL PROTECTED]>
To: "General Discussion for the Resin application server"
<resin-interest@caucho.com>
Sent: Tuesday, March 25, 2008 9:59 AM
Subject: [Resin-interest] Snapshot 080320 consumes 100% CPU time at
64bitwindows
Hi Scott,
Today morning I switched my production website to snapshot080320. I'm
running on JDK1.6.0_04 64bit at a 64bit windows 2008 machine with two cpu
socket(both single core) and 4GB ram.
I've modified resin.conf by these options:
<jvm-arg>-Xmx1024m</jvm-arg>
<jvm-arg>-Xmx2048m</jvm-arg>
<thread-max>512</thread-max>
After some time, about half an hour, I found cpu usage jumped to 50% (run
out of one cpu) because of javaw.exe, which consumed 2048M phisical ram.
I restart resin and after half an hour or so, it happened again. I had to
revert to snapshot080305 and 32bit 1.6.0_04 jvm, and everything went ok as
the past two weeks.
The deployed webapp was absolutely identical during the migration.
Note: I use jbosscache (version 2.1.0 GA) heavily in my webapp and maybe
cache 20k objects/octal streams (more than 400M bytes) at peak.
I know it probably be my fault in code or something else, and I did not
have
the same network clients condition (as the production website) to fully
profile and find the reason of bottleneck.
Any suggestion will be appreciated.
- Wesley
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