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Brian
Asked: 2011-04-15 07:10:46 +0800 CST

Tomcat 6 Default Memory Allocation Settings

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Does anyone know or know how to find the default values for the various memory allocation-related parameters (-Xms, -Xms, -XX:PermSize, -XX:MaxPermSize) for Tomcat version 6?

tomcat memory

1 Answers

  1. Best Answer

    As far as I can tell the defaults should be the same as for any server JVM. Are you using the default Sun/Oracle JDK, version 6?

    If so you could check the default values.

    Java 8

    http://docs.oracle.com/javase/8/docs/technotes/tools/windows/java.html

    Garbage Collector Ergonomics

    HotSpot Tuning Guide

    Java 6

    http://download.oracle.com/javase/6/docs/technotes/tools/windows/java.html

    http://download.oracle.com/javase/6/docs/technotes/guides/vm/gc-ergonomics.html

    Of course, if this particular Tomcat install is new to you remember to check the actual JVM parameters using ps auxwwe (if using Linux) and its init scripts in case someone set CATALINA_OPTS or JAVA_OPTS, etc.

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