I may have recently found a same/similar issue with our environment. Our setup is GenericSecurityRealm and SQLLoginModule also, although we are using Tomcat (WebSphere Community Edition v2.1.1.3, based on Geronimo 2.1.4 and Tomcat 6.0.20).
The app is a pretty straightforward JSF web application. Using MAT to analyze the heap dump showed the same thing: 86% of memory used up by org.apache.geronimo.security.ContextManager objects, with 54% of that being IdentityHashMap objects. If there is anything else I can share that might help, please let me know. David Frahm Huber & Associates Office: 573-634-5000, Mobile: 573-298-1040 [email protected] wrote: ----- To: [email protected] From: Morten Svanæs <[email protected]> Sent by: [email protected] Date: 02/08/2011 06:51AM Subject: Stateless/sessionless servlet consuming too much memory Hi, I'm currently having memory problems with a stateless web service running in Geronimo 2.2.1. The problem is that after running for a while the server starts consuming more and more memory, some kind of leak or accumulation of unwanted objects occur. After analyzing the heap dumps in mat I can clearly see that the accumulation happens inside the org.apache.geronimo.security.ContextManagers's subjectContexts IdentityHashMap. The login happens via http basic and a custom LoginModule looking up users in the database. The login module is based on the GenericSecurityRealm and SQLLoginModule. The service is a standard web servlet running on jetty. The service is called typically many hundred times a second by the client with stand http basic auth urls, so there is actually no need for sessions at all. It seems like when users log on to the service the credentials/siubject gets stuck in the subjectContexts hashmap even though the session timeout is set for 1 sec in the web.xml file. I've disabled session cookies by using information found here: http://www.mojavelinux.com/blog/archives/2006/11/disabling_session_cookies_in_jetty/ I assume this is some kind of misconfiguration on our side and not the stand. behavior with Geronimo, anyone who can help us point out the direction for solving this would be greatly appreciated. Regards, Netroms Nacoma
