[jboss-user] [Performance Tuning] - Re: Terrible performance with lot of concurrent ejb calls - SecurityActions.loadClass

Maros Bajtos [http://community.jboss.org/people/maros.bajtos] created the discussion "Re: Terrible performance with lot of concurrent ejb calls - SecurityActions.loadClass" To view the discussion, visit: http://community.jboss.org/message/574096#574096 -------------------------------------------------------------- We have security-domain in our jboss-app.xml, I guess that counts too. I just tried to turn off RoleBasedAuthorizationInterceptorv2 in jboss-ejb3-core.jar, but it didn't help much, I think there are more places where SecurityActions.loadClass is called. Btw I realized that the the number of ejb calls is even higher, so it's like thousands of calls - that would explain why the performance is so terrible - ClassLoader.loadClass is called so many times, that even small overhead of managing lock can degrade performance significantly (especially with many threads calling that method and blocking each other). I think we will consider change of implementation a bit and don't use EJBs so often, but anyway, I think this extreme case is showing some performance problems very well. I can't attach the application, since it is proprietary:( I will try to append profiler snapshots tomorrow. -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/574096#574096] Start a new discussion in Performance Tuning at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&...]