hi Server : RHEL linux with 4 GB Ram Jboss 4.2.2 GA memory consumed by process RSS VSIze 358560 937004 0.0 8.6 /home/spsadm/data/jdk1.5.0_16/bin/java -Dprogram.name=run.sh -server -Xms128m -Xmx512m -Dsun.rmi.dgc.client.gcInterval=3600000 -Dsun.rmi.dgc.server.gcInterval=3600000 -Djava.net.preferIPv4Stack=true -Djava.endorsed.dirs=/data/jboss/lib/endorsed -classpath /jboss/bin/run.jar:/home/spsadm/data/jdk1.5.0_16/lib/tools.jar org.jboss.Main -b abc after seeing above pls suggest what Xms n Xms size Do I use for optimal performance . any other tweak you may suggest issue is RAM continuously eaten by jboss where GC frees a little or sm times does not . View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4225316#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...