I am running JBoss solely on the Linux box. Any yes the linux is 64-bit CentOS. Inspired by your "Hello world" test, I tried POSTing to a dummy servlet running on a Tomcat server (on another machine) that simply prints the request to file and returns. I can get the requests up to ~60/second, but still nowhere near your results :( Perhaps I'll copy this thread over to the JMeter forums after we're done :) View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4160713#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...