Thank you a lot for your analyze and your help. I will study the link you gave.
If it is a memory link problem, I assume we could easily reproduce the problem with a script that would generate a lot of load on our serveur. In such a case, we could in few minutes reproduce the case. What do you think ? Olivier On Wed, Jul 16, 2008 at 4:38 AM, Caldarale, Charles R < [EMAIL PROTECTED]> wrote: > > From: Olivier Fourel [mailto:[EMAIL PROTECTED] > > Subject: Tomcat 5.5 hanged . Thread Dump Analyze > > > > our Tomcat production server hanged again. > > We made 2 thread dumps with few minutes between them. > > The only thing I found suspicious is that PermGen is at 99% in both of > them. (You also have a tonne of non-Tomcat threads running around, but none > appear hung; I presume your webapps created these and will dispose of them > properly at an appropriate time.) > > If you are filling up the PermGen, you should be getting log entries for > the OOMEs being thrown - unless something in your webapps is catching them > and throwing them away. PermGen exhaustion is frequently caused by poor > application design, hanging on to references to classes that should be > discarded. This link (from the Tomcat FAQ) contains some interesting > comments: > > http://opensource.atlassian.com/confluence/spring/pages/viewpage.action?pageId=2669 > > You might try increasing the PermGen size, but that is likely only to delay > the inevitable until you fix the memory leak. You can monitor the PermGen > growth with JConsole with little impact on performance. > > - Chuck > > > THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY > MATERIAL and is thus for use only by the intended recipient. If you received > this in error, please contact the sender and delete the e-mail and its > attachments from all computers. > > --------------------------------------------------------------------- > To start a new topic, e-mail: users@tomcat.apache.org > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > >
