Hmm, I have made 3 more experiments and the time oscillates between 26s and 28s does not matter if with XNIO or without. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4234489#4234489 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4234489