java-bench

Tools to bench and compare different codes producing the same result.

How-to

Implements the Benchmarkable interface

You have to implements Benchamrkable for each code you want to bench.

public class Slow extends Benchmarkable {
    @Override
    public void execute(long id) {
        int a = 0;
        for (int i = 0; i < 1000; i++) {
            a += i;
        }
    }
}

Declares what Benchmarkable to bench

In the Main class, you have to call benchmarker.addBenchmarkable for each Benchmarkable you want to bench.

Example: We want to compare execution velocity between Fast and Slow Benchmarkables.

benchmarker.addBenchmarkable(new Fast());
benchmarker.addBenchmarkable(new Slow());

Defines the number of loops

In the Main class, you have to call benchmarker.bench for each test you want to execute. For each execution the benchmarker will calculate the time elapsed.

Example: We want to execute benchmarkables 1 time, then 50 times.

benchmarker.bench(1);
benchmarker.bench(50);

Start the benchmark

Just run the main method in the Main class.

Look at the output console.

---------------------------------------
1 loops
    Fast
        ->         1746754 ns
    Slow
        ->         1558736 ns
    Fast (per loop)
        ->         1746754 ns
    Slow (per loop)
        ->         1558736 ns
---------------------------------------
50 loops
    Fast
        ->          316510 ns
    Slow
        ->          967180 ns
    Fast (per loop)
        ->            6330 ns
    Slow (per loop)
        ->           19343 ns
--------------------------------------------
Total time: 11283908 ns

Want something more ?

If you want the Benchmarker do something more, feel free to tell me what you need/want.

You may also fork this repository, do the job in your own fork, and ask a pull request.