It consists of a small library and a build system plug-in. The library provides annotations and utilities to declare your benchmarks as annotated Java classes and methods, including a BlackHole class to consume generated values to avoid code elimination. The library also offers correct state handling in the presence of multithreading.
The build system plug-in generates a JAR with the relevant infrastructure code for running and measuring the tests correctly. That includes dedicated warm-up phases, proper multithreading, running multiple forks and averaging across them, and much more.
Run progress: 50.00% complete, ETA 00:00:52 Fork: 1 of 5 Warmup Iteration 1: 15417.073 ops/s Warmup Iteration 2: 17956.473 ops/s Warmup Iteration 3: 19344.709 ops/s Warmup Iteration 4: 19531.616 ops/s Warmup Iteration 5: 19594.089 ops/s Iteration 1: 15770.995 ops/s Iteration 2: 11527.629 ops/s Iteration 3: 10487.826 ops/s Iteration 4: 10836.898 ops/s Iteration 5: 11593.463 ops/s
Run progress: 60.00% complete, ETA 00:00:41 Fork: 2 of 5 Warmup Iteration 1: 15104.388 ops/s Warmup Iteration 2: 11723.209 ops/s Warmup Iteration 3: 13661.347 ops/s Warmup Iteration 4: 17806.467 ops/s Warmup Iteration 5: 17836.745 ops/s Iteration 1: 18376.146 ops/s Iteration 2: 11179.084 ops/s Iteration 3: 8729.903 ops/s Iteration 4: 8048.899 ops/s Iteration 5: 9837.655 ops/s
Run progress: 70.00% complete, ETA 00:00:31 Fork: 3 of 5 Warmup Iteration 1: 8626.423 ops/s Warmup Iteration 2: 14634.751 ops/s Warmup Iteration 3: 17769.113 ops/s Warmup Iteration 4: 19167.940 ops/s Warmup Iteration 5: 18539.108 ops/s Iteration 1: 14656.397 ops/s Iteration 2: 13260.480 ops/s Iteration 3: 14034.512 ops/s Iteration 4: 12508.605 ops/s Iteration 5: 15424.938 ops/s
Run progress: 80.00% complete, ETA 00:00:20 Fork: 4 of 5 Warmup Iteration 1: 11583.331 ops/s Warmup Iteration 2: 12827.315 ops/s Warmup Iteration 3: 13280.350 ops/s Warmup Iteration 4: 18113.673 ops/s Warmup Iteration 5: 19377.980 ops/s Iteration 1: 19397.737 ops/s Iteration 2: 14565.368 ops/s Iteration 3: 19470.145 ops/s Iteration 4: 19624.813 ops/s Iteration 5: 19617.723 ops/s
Run progress: 90.00% complete, ETA 00:00:10 Fork: 5 of 5 Warmup Iteration 1: 12103.020 ops/s Warmup Iteration 2: 11280.309 ops/s Warmup Iteration 3: 14907.900 ops/s Warmup Iteration 4: 12919.638 ops/s Warmup Iteration 5: 14150.498 ops/s Iteration 1: 14964.432 ops/s Iteration 2: 14524.757 ops/s Iteration 3: 12700.990 ops/s Iteration 4: 11378.969 ops/s Iteration 5: 10524.935 ops/s