Starting with JBoss AS 7.1.2, you can create graphs of managment attributes that update in real time.
In CLI GUI's command builder, find a real time attribute to monitor. If the attribute is graphable, you will see the "approximately equals" symbol ≅.
Right-click the attribute and select "Real Time Graph". You will then see a setup dialog:
Click OK and wait a few seconds to see the graph take shape: