Some Useful Tomcat VM Arguments

Here are some common VM arguments for Tomcat that I find myself looking up again and again.  Especially when setting up a new dev environment.  This is mostly based on Tomcat 7 but should also work for Tomcat 8, for the most part.

Another note: The configuration I'm using here is for my eclipse dev environment, but it could be adapted for any server.

More Memory

-Xms (Initial Heap size)

-Xmx (Maximum Heap Size)

-XX:MaxPermSize (Max Perm Size; tomcat 7 only)

Example:  -Xms512m -Xmx1024m -XX:MaxPermSize=512m

JMX Remote Access

Example:

-Dcom.sun.management.jmxremote
-Dcom.sun.management.jmxremote.port=1234
-Dcom.sun.management.jmxremote.authenticate=false
-Dcom.sun.management.jmxremote.ssl=false
-Djava.rmi.server.hostname=127.0.0.1

Then you can then connect to your local process with JConsole with localhost:1234

Some useful links:

http://www.mkyong.com/tomcat/jconsole-jmx-remote-access-on-tomcat/