Under the Hood of a JVM Application - Java Flight Recorder/Java Mission Control
summary
Java Flight Recorder (JFR) and Java Mission Control (JMC) are presented as low-level diagnostic tools for JVM applications when logs, metrics or APMs aren’t enough. The talk explains that JFR records event-based traces of threads, memory behavior, I/O operations, and GC configuration, while JMC provides the UI to explore those events; a demo using a sample application shows how to inspect this data and use it to improve application performance.
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chapters (11)
- 0:00JFR & JMC intro
- 8:33JMC overview
- 11:25Demo app overview
- 15:23First execution
- 16:46Initial JMC results
- 21:42Removing lock
- 23:28Tuning read buffer
- 29:14Fixing JDK bug
- 35:08Optimization summary
- 40:22When to use JFR & JMC
- 47:48Conclusion
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