I tried this tweaking the startup options, but things still grow: JENKINS_JAVA_OPTIONS="-Djava.awt.headless=true *-Xms4096m -Xmx4096m -XX:MaxPermSize=1024m -XX:+CMSClassUnloadingEnabled -XX:+UseConcMarkSweepGC* -Dhudson.model.ParametersAction.keepUndefinedParameters=true"
We are using system groovy script and the python jenkinsapi pip module to do a lot of things, so I bet something changed in the way things load in groovy. I just found a JIRA ticket associated with this: https://issues.jenkins-ci.org/browse/JENKINS-33358 I ran the scripts here: https://wiki.jenkins-ci.org/display/JENKINS/Monitoring+Scripts and I see a bazillion things like this (Display heap histogram (object instances per class)): sun.reflect.GeneratedMethodAccessor sun.reflect.GeneratedSerializationConstructorAccessor I'll see if adding this helps any: -Dgroovy.use.classvalue=true Alex On Saturday, August 27, 2016 at 12:28:44 PM UTC-4, grayaii wrote: > > We went from Jenkins 1.651.1 to 2.7.2 and our Jenkins master kept on > crashing with: > java.lang.OutOfMemoryError: PermGen space > > Where were not specifying -XX:MaxPermSize in our JENKINS_JAVA_OPTIONS > before, so I added it, and kept on increasing the value after every crash. > We are now at 512m: > > JENKINS_JAVA_OPTIONS="-Djava.awt.headless=true -Xms3584m -Xmx3584m > -XX:MaxPermSize=512m > -Dhudson.model.ParametersAction.keepUndefinedParameters=true" > > Using the Jenkins Monitoring plugin, we see that the Loaded Classes Count > keeps growing without stopping: > > > <https://lh3.googleusercontent.com/-KnFb1isIibc/V8G_bAUCMzI/AAAAAAAADYk/b0XjUEGvWVM8mumIpJrTB0WEkerXBqyVwCLcB/s1600/jenkins.png> > How do you debug this? > Something must be loading classes continuously. > > > Any ideas how we can debug this? > -- You received this message because you are subscribed to the Google Groups "Jenkins Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to jenkinsci-users+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/jenkinsci-users/8d0fdeb1-e30b-4912-825c-376331795e61%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
