J2EE 1.4 includes a Performance Data Framework that is defined as part of JSR-077 (Java 2 Platform, Enterprise Edition Management Specification).
This framework specifies the performance data that must be available for various J2EE components. WebSphere PMI complies with J2EE 1.4 standards by implementing the J2EE 1.4 Performance Data Framework.
In addition to providing
statistics that are defined in J2EE 1.4, PMI provides additional statistics
about the J2EE components, for example, servlets and enterprise beans, and
WebSphere Application Server-specific components, for example, thread pools
and workload management.