Based on Java Management Extensions API JMX Calibration Services implements Diagnostic & Calibration functionality for Java EE Web Applications as part of Performance Management for individual Best Fit Deployments and essential Visibility into Java Web Transactions across your infrastructure. You identify performance problems and balance your Java Web Server remote at runtime via JMX supported Tools(->White Paper).
VisualVM - All-in-One Java Troubleshooting Tool. VisualVM is a visual tool integrating several commandline JDK tools and lightweight profiling capabilities. Designed for both production and development time use, it further enhances the capability of monitoring and performance analysis for the Java SE platform.