In general it is sensible to analyze the bottlenecks and performance blackspots rather than spend hours rewriting bits of code which may in fact be very performant compared to others. It sounds like you are interested in this - perhaps you could contribute a better solution (that preserves correctness as Norman says). We are doing some performance/scalability analysis currently. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4125427#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...