FYI - for details on configuring MINA for JMX, refer to: 
http://mina.apache.org/mina-project/apidocs/index.html?org/apache/mina/integration/jmx/package-summary.html
Ideally we would like to register both the IoService as well as each IoSession. This provides helpful MINA-related counters that are then visible via the JConsole application (which can be enabled via the admin console).