JDK Flight Recorder

JDK Flight Recorder (JFR) is is an integrated monitoring and profiling capability introduced in IBM Semeru Runtimes in v11.0.27, v17.0.15 and v21.0.7 releases. The main function of JFR is to run in conjunction with the running Java application, collect application level and JVM level metrics and record these metrics in the form of a JFR record. Analyzing and visualizing these JFR records requires the use of an additional tool: JDK Mission Control (JMC).

• JDK Flight Recorder (JFR) User Guide
• IBM Monitoring and Diagnostic Tools - JDK Flight Recorder documentation.
• Download JDK Mission Control
• JDK Mission Control User Guide

Health Center

Note that Health Center is packaged with, and supported on, versions of the IBM Developer Kit up to version 8 and IBM Semeru Certified Edition on z/OS. Health Center is not currently available in the IBM Semeru Runtimes for platforms other than z/OS.

• Download and run the Health Center client
• Get started with the User guide.

Garbage Collection and Memory Visualizer

Note that GCMV is available as is. There is no further support or future development.

Analyzes output from garbage collection logs to:

• Visualize the memory usage and garbage collection activity of your application
• Provide recommendations for tuning your application

• Download and run GCMV
• Get started with the User guide.

IBM Diagnostic Tool Framework for Java

The Diagnostic Tool Framework for Java (DTFJ) is a Java application programming interface (API) that can be used to build Java diagnostics tools.

IBM SDK, Java Technology Edition, version 8 includes DTFJ, which is part of the Eclipse OpenJ9 VM.