Memory settings

The following sample sets

• PermGen space is set to 256 MB
• Minimum application memory is 512 MB
• Maximum application memory is 1 GB

-Xmx512m -Xms1024m -XX:MaxPermSize=256m

Max total memory in this setup is 1256 MB

Setting values in Tomcat / Windows

Tomcat6

The service can be changed by

1. Open prompt
2. Run the following commands

  cd "C:\Program Files\Apache Software Foundation\Tomcat 6.0\bin
  tomcat6.exe //RS//tomcat6 --JvmOptions=-Xmx512m -Xms1024m -XX:MaxPermSize=256m

Tomcat7

Follow the steps in this guide

http://plavc.wordpress.com/2012/02/08/tomcat-service-on-windows/

Set the values

• Initial memory pool (aka "Xms"): 256m
• Maximum memory pool (aka "Xmx"): 1024m
• Add a line to Java Options

 -XX:MaxPermSize=128m

Setting values in Tomcat / Linux

Find catalina.sh in something like: /usr/share/tomcat6/bin

Assign following line to JAVA_OPTS variable and add it into catalina.sh file.

 JAVA_OPTS="-Djava.awt.headless=true -server -Xmx512m -Xms1024m -XX:MaxPermSize=256m"