PMI data collection

PMI data collection can occur in three different interfaces...

JMX Interface

Part of the J2EE specification and the recommended way to gather WAS performance data. PMI data can be gathered from the J2EE managed object Beans or the WAS PMI Perf MBean. While the J2EE MBeans provide performance data about the specific component, the Perf MBean acts as a gateway to the WAS PMI service, and provides access to the performance data for all the components.

Performance Servlet

Use an HTTP request to query the PMI data for the entire WAS administrative domain. Since the servlet provides the performance data through HTTP, issues such as firewalls are trivial to resolve. The performance servlet outputs the PMI data as an XML document.

PMI client API (deprecated)

Provides a wrapper class to deliver PMI data to a client. The PMI client API uses the JMX infrastructure and the Perf MBean to retrieve the PMI data. PMI client provides the data using a WAS-specific data structure.

Related:

PMI architecture

Performance Monitoring Infrastructure (PMI)

Monitor overall system health