PermGen problems with Lift and Jetty

Question

I\'m developing on the standard Lift platform (maven and jetty). I\'m repeatedly (once every couple of days) getting this:

Exception in thread \"7048009@qtp-         


        

Answer 1

If you see this when running mvn jetty:run, set the MAVEN_OPTS.

For Linux:

export MAVEN_OPTS="-XX:+CMSClassUnloadingEnabled -XX:PermSize=256M -XX:MaxPermSize=512M"
mvn jetty:run

For Windows:

set "MAVEN_OPTS=-XX:+CMSClassUnloadingEnabled -XX:PermSize=256M -XX:MaxPermSize=512M"
mvn jetty:run

Should be fine now. If not, increase -XX:MaxPermSize.

You can also put these permanently to your environment.

• For Linux, append the export line to ~/.bashrc

• For Windows, press Win-key + PrintScreen, and go Advanced > Environment. See also http://support.microsoft.com/kb/310519.