It appears that if you run with a JRE that uses PermGen (e.g. OpenJDK 1.6) that the Jenkins master will eventually run out of PermGen space.

It seems like it is creating a gabillion Ant classes (approx. number)... It looks like a contant number per build.

You can recreate this by standing up a simple jenkins.war and adding a job that uses RTC SCM and then building it. Each build eats up more PermGen space.

I suspect this is related to: https://bugs.eclipse.org/bugs/show_bug.cgi?id=130545

I am working around it by using IBM's 1.6 JRE, which doesn't have PermGen. However, it now eats a lot of Heap... I'm hoping that everything will be GC'd correctly.

Either way, this should still be fixed.