What is your virtual machines configuration - how much RAM are you allocating to it? What are your heap settings? Try setting heap min and max to the same value. What is Linux SMP? By SMP do you mean Symetric Multiprocessing? So are you saying that you configured your virtual machine with multiple processors? How many? How many processors does the host machine have? Which Linux distro are you using? What system metrics have you monitored so far? Memory usage? Processor utilization? Disk free space? View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4213404#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...