Ever wonder how the JDK Flight Recorder (JFR) keeps track of the classes and methods it has collected for stack traces and more? In this short article, I’ll explore JFR tagging and how it works in the OpenJDK. Tags JFR …
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Java Flight Recording and Analysis with Azul Mission Control
With Azul Mission Control, you can delve deep into JFR recordings to optimize your code and ensure it runs smoothly and error-free.
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Using AI to Create JFR Event Descriptions
Learn about the website that gives an overview of JFR events, with descriptions from the OpenJDK, their properties, examples, configurations, and the JDK versions in which every event is present.
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Custom Events in the Blocky World: Using JFR in Minecraft
I was searching for some JFR-related settings on the internet when I stumbled upon the /jfr command that exists in Minecraft…
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Custom JFR Events: A Short Introduction
Find out how JFR allows you to implement your events to record custom information directly in your profiling file.
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Putting JFR into Context
Have you ever wanted to bring your JFR events into context? Adding information on sessions, user IDs, and more can improve your ability to make sense of all the events in your profile.
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JFR Timestamps and System.nanoTime
Did you ever wonder whether JFR timestamps use the same time source as System.nanoTime? Come down the rabbit hole with me!
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Firefox Profiler Beyond the Web
Ever wanted to profile your application directly from your IDE? Here comes the Java JFR Profiler plugin, an open-source plugin for IntelliJ!
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JFR Event Collection
Ever wondered what all the JDK Flight Recorder events are, in which JDK versions they are supported, and what examples of an event looks like?
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OpenJDK and the Future of Production Profiling
The JDK Flight Recorder design philosophy is to be the one-stop-shop production profiler for OpenJDK.
JFR needs to be able to do various kinds of profiling, all at the same time, at a low overhead. It also needs to be able to run continuously for as long as someone is interested in the data. Potentially always.
Now, with changes in the Java (and the computing) ecosystem, JFR has some loom-ing challenges to remain relevant for the future.
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Towards Continuous Performance Regression Testing
JfrUnit is an extension for JUnit 5 which integrates Flight Recorder into unit tests.
It makes it straightforward to initiate a JFR recording for a given set of event types, execute some test routine, and then assert the JFR events which should have been produced.
Stay tuned for next parts in this series, where we’ll explore how to trace the SQL statements executed by an application using the JMC Agent and assert these query events using JfrUnit.
