On the Benchmarks I have done I always ignored 100 first elements to be fair.. not computing ClassLoading as JDK classes get sometimes pre-loaded (Specially Serialization) Also.. I always used the same ByteArrrayOutputStream (by calling reset)... And of course my Java and JBoss examples were the same. I needed to be fair on both sides. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3985060#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...