I can't seem to find these settings anywhere when bringing up a node and how to change these options.  Can some one please help?

DEBUG [org.jboss.as.config] (MSC service thread 1-2) VM Arguments: -D[Server:server1] -XX:PermSize=128m -XX:MaxPermSize=128m -Xms64m -Xmx256m -Djboss.modules.system.pkgs=org.jboss.byteman