Measuring the performance of a Java software
JMH is a toolkit that assists you in appropriately implementing Java microbenchmarks. Let's now discuss them in detail.
Why are Java microbenchmarks difficult to create?
It's difficult to create benchmarks that accurately assess the performance of a tiny area of a bigger program. When the benchmark runs your component in isolation, the JVM or underlying hardware may apply a variety of optimizations to it. When the component is operating as part of a bigger application, certain optimizations may not be available. As a result, poorly designed microbenchmarks may lead you to assume that your component's performance is better than it actually is.
Writing a good Java microbenchmark often requires avoiding JVM and hardware optimizations that would not have been done in a genuine production system during microbenchmark execution. That's exactly what it is about. Benchmarks that correctly measure the performance of a...