Does enabling JMX agent have a performance overhead?

Question

I would like to have a possibility to use jconsole in production, but am a bit concerned about performance. Is it ok to leave JMX agent running (via -Dcom.sun.management.jmxremote) or will it have a noticeable performance footprint?

Answer 1

From Tuning Your GlassFish – Performance Tips :

General Tuning Tips

Unused features could have a negative impact on the performance and should be disabled:

• Auto-deployment of applications

• JMX Monitoring

• JMS

• Dynamic JSP reloading

• JDBC Connection validation

• Security Manager could be turned off if the applications are all trusted internal applications

Source: http://wiki.glassfish.java.net/attach/GlassFishDay2008Hyderabad/GlassFishDay2008PerfPreso.pdf (PDF document)