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Jitwatch

Log analyser / visualiser for Java HotSpot JIT compiler. Inspect inlining decisions, hot methods, bytecode, and assembly. View results in the JavaFX user interface.

Install / Use

/learn @AdoptOpenJDK/Jitwatch
About this skill

Quality Score

0/100

Supported Platforms

Universal

README

JITWatch

Log analyser and visualiser for the HotSpot JIT compiler.

  • Video introduction to JITWatch video
  • Slides from my LJC lightning talk on JITWatch slides
<h3>For instructions and screenshots see the wiki</h3> <h3>https://github.com/AdoptOpenJDK/jitwatch/wiki</h3>

The JITWatch user interface is built using JavaFX which is downloaded as a maven dependency for JDK11+.

For pre-JDK11 you will need to use a Java runtime that includes JavaFX.

<h2>maven</h2> <pre>mvn clean package && java -jar ui/target/jitwatch-ui-shaded.jar</pre> <h2>Build an example HotSpot log</h2> <pre># Build the code and then run cd scripts && ./makeDemoLogFile.sh</pre>

Related Skills

View on GitHub
GitHub Stars3.3k
CategoryProduct
Updated7d ago
Forks460

Languages

Java

Security Score

85/100

Audited on Mar 19, 2026

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