Thanks Kalle, I know the links you suggest, but I was exlcuding my code because it has not been chaned much from the one on the old server....
Anyway I will keep on investigating, I have no other choice. Thanks anyway Il 07/04/2016 17:37, Kalle Korhonen ha scritto: > On Thu, Apr 7, 2016 at 12:33 AM, Ivano Luberti <lube...@archicoop.it> wrote: > >> Kalle, Chris, thanks for your answers. >> Unfortunately the problem is not related to webapp reloading even >> restarting the Tomcat service leads to out of PermGen in a few days, >> PermGen itself is quite large and I already use UseConcMarkSweepGC. Down >> The cause of the space consumption seems to be the presence of a lot of >> classes of this type >> org.apache.tapestry.enhance.ClassFactoryClassLoader >> > That's a symptom, not a cause. > > >> It seems that the more request the application serves the more PermGen >> increases and that's led me to think that the page pool is never cleaned up >> or at least not well cleanedup. >> > Most likely, you have a permgen memory leak. Are you using streams and/or > threads on your pages and are they properly closed, even in case of > exceptions? I can't tell you how many memory leaks I've plugged over the > years in thread and stream handling. Invariably, the errors are in your own > code. See https://plumbr.eu/blog/memory-leaks/what-is-a-permgen-leak for > possible causes for a permgen memory leak. Also, you are in luck because > Tomcat 6 added some useful tools for detecting memory leaks (see > http://wiki.apache.org/tomcat/MemoryLeakProtection, and Tomcat 7 and up is > even able to recover from some of them). Take a heap dump of the stressed > out system and load it in your VisualVM. > > Kalle > > > >> Il 06/04/2016 23:24, Kalle Korhonen ha scritto: >>> If you run out of permgen space very quickly, then it's indicative that >> the >>> allocated permgen space is simply too small. Perhaps the new version of >>> Tomcat requires more of it for itself, leaving less for your application. >>> Is the webapp restarted at times? If so, that can easily cause permgen >>> space to fill up because of the way OGNL works. And even if you are not >>> restarting the app, you need to exercise all parts of your web >> application >>> to find out the true permgen space consumption of it. >>> >>> Kalle >>> >>> On Wed, Apr 6, 2016 at 1:49 PM, Ivano Luberti <lube...@archicoop.it> >> wrote: >>>> Hey Tony, if you don't mind, can you send me all the configuration >>>> options of Java and Tomcat you are using? So tomcat6.conf and server.xml >>>> files? >>>> >>>> No one else on the list can share its thoughts? >>>> >>>> Il 05/04/2016 23:03, Ivano Luberti ha scritto: >>>>> Hi Tony thanks for the quick answer: >>>>> >>>>> Il 05/04/2016 21:50, Tony Nelson ha scritto: >>>>>> I still have a Tapestry 4 app running with Tomcat 6.0.41, and it runs >>>> well enough with: >>>>>> -XX:MaxPermSize=1024m >>>>> with that setting it fails but... >>>>>> I also have >>>>>> >>>>>> -Xmx12g -Xms4g -XX:+UsseConcMarkSweepGC -XX:+UseParNewGC >>>>> I have only -Xmx2g >>>>> >>>>> I use >>>>> >>>>> -XX:+UseConcMarkSweepGC >>>>> >>>>> but not >>>>> >>>>> -XX:+UseParNewGC >>>>> >>>>> >>>>> but this last one doesn't seem to have an influence on PermGen, does >> it? >>>>> >>>> -- >>>> ================================================== >>>> dott. Ivano Mario Luberti >>>> Archimede Informatica societa' cooperativa a r. l. >>>> Sede Operativa >>>> Via Gereschi 36 - 56126- Pisa >>>> tel.: +39-050- 580959 >>>> tel/fax: +39-050-8932061 >>>> web: www.archicoop.it >>>> ================================================== >>>> >>>> >>>> --------------------------------------------------------------------- >>>> To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org >>>> For additional commands, e-mail: users-h...@tapestry.apache.org >>>> >>>> >> -- >> ================================================== >> dott. Ivano Mario Luberti >> Archimede Informatica societa' cooperativa a r. l. >> Sede Operativa >> Via Gereschi 36 - 56126- Pisa >> tel.: +39-050- 580959 >> tel/fax: +39-050-8932061 >> web: www.archicoop.it >> ================================================== >> >> >> >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org >> For additional commands, e-mail: users-h...@tapestry.apache.org >> >> -- ================================================== dott. Ivano Mario Luberti Archimede Informatica societa' cooperativa a r. l. Sede Operativa Via Gereschi 36 - 56126- Pisa tel.: +39-050- 580959 tel/fax: +39-050-8932061 web: www.archicoop.it ================================================== --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org For additional commands, e-mail: users-h...@tapestry.apache.org
