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From "Shapira, Yoav" <>
Subject RE: Memory Issues
Date Mon, 05 Apr 2004 12:50:23 GMT

Note as an aside that the JVM will use as much memory as you allow it
within tuning parameters, i.e. if you give it 1500MB max (and don't
change other defaults), it won't start doing full GCs until it has most
of that allocated, even if most of it can be reclaimed.

Yoav Shapira
Millennium Research Informatics

>-----Original Message-----
>From: shyam []
>Sent: Saturday, April 03, 2004 1:37 PM
>To: 'Tomcat Users List'
>Subject: Memory Issues
>Hi All,
>I have an application running on tomcat4.1.24. I have allocated 1500 mb
>to the java vm. What happens is in 3-4 days my total memory reaches the
>1500mb. The free memory is low. I force the GC to run so that the
>is freed. What I don't understand why is the total memory maximum. I
>want tomcat to deallocate and resize the heap so that the total memory
>doesn't max out. And also I need the GC to run more aggressively .
>My JAVA_OPTS are java -noclassgc -jmx1500 -jms1500.
>Any help in this issue will be grateful.
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