This is a performance testing setup for mockk using JMH. kotlinx-benchmark seems to support more than JVM, but I didn't explore other runtimes.

How to run

There are 2 ways to execute the benchmark code

Basic with Gradle

gradle benchmark

It will use default configuration set in build.gradle.kts and print out the results

If you want access to more JMH feautres you can

gradle mainBenchmarkJar

to build the .jar file containing the benchamrk code. It will be saved to ./build/benchmarks/main/jars directory.

From there you can run JMH with all the JMH-specific configuration options form CLI (even on different machine).

java -jar ./build/benchmarks/main/jars/mockk-performance-main-jmh-<version>.jar -w 1 -i 2 -r 60s  -prof jfr

which will e.g. attach the JFR profiler (not possible with kontlinx-benchmark executed from Gradle)