On 2013-06-27 Christopher Schultz wrote: > On 6/27/13 4:31 PM, honyk wrote: > > I am constantly encountering PermGen errors despite quite high > > PermGen limit (even 512m) and many options set - approx once a week > > under not heavy load. > > Like what kinds of options? What kind of load? What does the error > look like? Are you re-deploying your webapp without restarting Tomcat, > or do you bust PermGen even with a single deployment?
Tomcat runs as service using these Java opts (tomcat7w.exe) - single line -Duser.language=en -XX:MaxPermSize=512m -XX:+DisableExplicitGC -XX:+CMSClassUnloadingEnabled -XX:+CMSPermGenSweepingEnabled Originally I used Apache JkMount/Worker to hide that port number. In that case there were listed these errors in the tomcat err log: Exception in thread "ajp-bio-8009-exec-7" java.lang.OutOfMemoryError: PermGen space Now I use proxypass like this (hoping this is preffered way): ProxyPass /my-app ajp://localhost:8009/my-app and in this case I can see just Exception in thread "ajp-bio-8009-exec-4" without any details (but I suppose it is the same PermGen one) I do not hot deploy my apps. They are JSF2.0/Mojarra powered, some of them access database a generate various reports. > > I am trying to investigate what the app causes this, but I haven't > > succeeded in reproducing it locally yet. > > > > I found several articles about VisualVM (I hope it could help me > > to determine some PermGen issues) and connecting it to the Tomcat. > > Remotely. But I have no clue how can I conect the local VisualVM to > > tomcat that runs on localhost. > > > > Even here it is written: > > http://tomcat.apache.org/tomcat-7.0-doc/monitoring.html > > > > Enabling JMX Remote Note: This configuration is needed only if you > > are going to monitor Tomcat remotely. It is not needed if you are > > going to monitor it locally, using the same user that Tomcat runs > > with. > > > > But there is no further description for that simpler (local) > > method. If it is obvious, sorry, but I am lost here ;-) > > Connecting to a Tomcat running on localhost is dead simple: > > 1. Launch VisualVM > 2. Once the main screen loads, double-click on "Tomcat" from the > "Local" cluster of applications > 3. Profit Now I've found this interesting article: https://blogs.oracle.com/nbprofiler/entry/monitoring_java_processes_running_as I realized that my tomcat runs as a service but I am logged as an user and in this case the tomcat is not visible to me. I'll test it differently tomorrow. Regards, Jan --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
