On 2013-07-23 Christopher Schultz wrote: > On 7/22/13 3:11 PM, honyk wrote: > > I am reusing my recent thread of not related subject with some > > updates... > > > > On 2013-06-28 Christopher Schultz wrote: > >> On 6/27/13 5:17 PM, honyk wrote: > >>> 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 > >> > >> I recommend that you run with -XX:+HeapDumpOnOutOfMemoryError > >> and possibly also with -XX:HeapDumpPath=[path to where you want > >> your heap dumps to go]. If/when your service busts PermGen, you > >> should be able to inspect the dump and see what all the > >> java.lang.Class objects are. I suppose it's possible that you > >> have a lot of intern'd String objects as well (if you are on Java > >> 1.6 or lower... you didn't say), but it's usually java.lang.Class > >> objects. > >> > >>> 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've set that recommended options, but when that > > 'ajp-bio-8009-exec-NN' exception is thrown (recorded in the tomcat > > err log), no heap dump is created in the specified (and existing) > > folder: -XX:HeapDumpPath=C:\DataStorage\tomcat-heap-dump > > What was the original thread's subject line? It's hard to get the > context of your question from what you have included, here. Remember, > nobody is paying as close attention to your problem as you are...
Sorry for this confusion. But this is rather a completely new topic. Briefly, if there is just 'ajp-bio-8009-exec-4' exception without further details in the tomcat error log, can I somehow get those details? Should I change the log level somewhere? Now I know it was really because of insufficient PermGen. Maybe in this case not all exceptions were 'written' to the log properly... I am still curious. It could be useful for future reference. Jan --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
