Suite for benchmarking Java logging frameworks.
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Java Logging Framework Benchmark

An application for performance testing different Java logging frameworks. By default, it tests the following frameworks:

  • Log4j 2
  • Logback
  • java.util.logging

Building the Project

This project uses Gradle. To build the project, navigate to the project folder and run ./gradlew build.

Running the Tests

Run the project using the following command:

gradle run -Dexec.args="<iterations> <events per iteration> <framework> <appender> <sync>"

The arguments take the following format:

  • Iterations: The number of iterations (i.e. loops) to run over the course of the test (this does not include one additional iteration to warm up the JIT).
  • Events per iteration: The number of events to generate per iteration.
  • Framework: The logging framework to use. This can be log4j2, logback, or java.util.logging for the respective framework.
    • To use log4j2's asynchronous loggers, append -async after log4j2. If you also want to include location info, append -async-location.
  • Appender: The Appender to use when logging. This can be file, syslog-tcp, syslog-udp, or console.
  • Sync: Specify sync for synchronous Appenders, or async for asynchronous Appenders.

Information about the current test will be printed to the console.

Creating new Tests

If you wish to add or change a configuration, add the configuration file to the src/main/resources/sync folder. Note that if you want to add an asynchronous test, create a copy with an asynchronous appender and move it to the src/main/resources/async folder. The file(s) must follow this naming convention:


Re-run Gradle project and your new configuration should be picked up automatically.