JBOSS Performance tuning:

[Mohammed Yousuff]

I am working on a project which uses JBOSS as the app server. Currently our system takes long time to deliver the response back. Due to this concern we are planning to fine tune the JBOSS 4.2 App Server & JVM. Can you please suggest some best practices or any book which guide the performance tuning @ Jboss ?...

[Peter Johnson]

JBoss in Action, chapter 14 - Tuning the JBoss Application Server (The book is about JBo ss AS 5, but the tuning recommendations work on all versions, though some of the exact details on where to change a JBoss AS config file might be different)

Also, do a search on "performance" or "tuning" in this forum and in the JBoss performance forum, there are quite a few posts there that discuss various tuning options.
http://community.jboss.org/en/jbossas/performance?view=discussions