RE: out of memory, GC doesn't cleaning up

["Shapira, Yoav" <Yo...@mpi.com>]

Hi,
Use a Profiler to see what objects keep references to data you think
should be garbage-collected.

I'd also suggest scrapping most your extensive memory tuning settings
for now, unless you're absolutely sure they're perfect.

Yoav Shapira
Millennium Research Informatics


>-----Original Message-----
>From: Futchi [mailto:msafadi@massar.com]
>Sent: Wednesday, July 14, 2004 9:44 AM
>To: Tomcat Users List
>Subject: out of memory, GC doesn't cleaning up
>
>Hi all,
>            I am running an app. with several threads running in the
>background; these threads are simply loading data into the servlet
>context, and writing files out streams.
>
>A thread updating 5 parameters in the servlet context
>A thread writing each of these parameters to a new file
>
>Both threads sleeps for only 1 second.
>
>In each cycle I am closing and flushing the out streams, and assign
null
>to all objects
>
>While monitoring the memory usage, I can see it just increasing, until
>the JVM reach the max size of the memory
>
>
>Catalina.bat JAVA_OPTS
>
>set JAVA_OPTS=-server -Xms256m -Xmx256m -XX:NewSize=64m
>-XX:MaxNewSize=128m -XX:SurvivorRatio=8 -XX:MaxTenuringThreshold=5
>-XX:TargetSurvivorRatio=75 -XX:PermSize=32m -XX:MaxPermSize=32m
-Xss128k
>-XX:+DisableExplicitGC -verbose:gc
>
>
>I searched java.sun.com but did not find any indication or help docs to
>this error, please help
>
>
>



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