Hello all,
I am sorry, I need ask help here, but I already have post this issue to 'Tomcat Users List' and was redirected to this list. I use JBoss 4.0.3sp1 (with embedded Tomcat 5.5) and have problem with JVM PermGen overflow. My application allows user to deploy custom JSP pages to server. These JSP pages copied inside one web-app without its redeploying. After several days of the system work, classes of the compiled JSP pages overflow Java PermGen space. It is needed to drop all references to classloader, to allow GC to finalize classloader and free PermGen from classes loaded by it. But Tomcat drop references to classloader only when web-application undeployed. To resolve this issue I have decide to replace JSP servlet (servlet mapped to *.jsp) with my own implementation. My JSP servlet will call JSP-compiler and load each compiled class by separate classloader instance, which won't be references from anywhere. This will allow GC to remove classloader and free PermGen. I think this will help. Am I right? By the way, is there any easier solution for described problem? All comments are welcome. -- Nikita PS1: I know, PermGen size can be increased with JVM option -XX:PermSize. It helps, but it doesn't solve problem completely. PS2: Deploying custom JSP pages by user is the primary design of my system and can't be changed.
