What are some examples of JMH benchmarking?

What are some examples of JMH benchmarking?

JMH, or Java Microbenchmark Harness, is used for benchmarking Java code. Examples include measuring the performance of sorting algorithms, comparing different data structures, or evaluating the impact of optimizations in your code.

Can you give me a specific example of a JMH benchmark?

Sure! A simple example is benchmarking the performance of a method that sorts an array of integers. You would create a benchmark class with a method annotated with @Benchmark that calls your sorting method.

How do I set up a JMH benchmark in my project?

To set up JMH, add the JMH dependency to your project, create a benchmark class, and annotate your benchmark methods. Then, run the benchmarks using the JMH command line or through your IDE.

What are some common pitfalls to avoid when using JMH?

Common pitfalls include not warming up the JVM before measurements, using non-final fields, and not considering the effects of JIT compilation. Always ensure your benchmarks are isolated and repeatable.