Have a look at http://www.jboss.org/community/docs/DOC-11282 - in particular, any logging that's frequent enough to require filtering should be logged at TRACE, not DEBUG (this is why, in JBoss Common Logging, isDebugEnabled() is deprecated). If these logs are infrequent, then there's no need to optimize it. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4222044#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...