Hi, do you know if the log on the console (or however on server.log) is an overhead on the overall performance? I've the impression than my application (which logs a lot) is stuck until all the log is printed.
The logging system in JBoss uses log4j. You can configure any of the available log appenders (including asynchronous one -- if you open the configuration file there's even an example of this already provided for you) or write your own.
Anything that logs to a console on a Windows system slows you down.