What you need - add a bit code to monitored places (you are going to get frequency invokes and time), and then you are completly set. Also, you can use AOP (aspect-oriented programing) to dynamicly add performance monitorin to your applciation.
In tipycal case Jamon using is:
private void f(){
Monitor mon = MonitorFactory.start("packadge.className.methodName");
try{
....
}finally{
mon.stop();
}
}
* This source code was highlighted with Source Code Highlighter.
The time will be measured from monitor instanced till monitor stop. You available to check min/max/avg and lst execution time for each monitor. The result can be logged with log4j, or you can check it at web UI (Jamon has special war out-of-box), or you can process/show statistic yourself.
I used JBoss, so I just copied Jamon.war deployment diectory and got beautifil, useful statistic at http://host:port/jamon/jamonadmin.jsp .
Note! In this case you must to SHARE jamon-*.jar library between two applciations - put it to specefic directory for your AS
