On Thu, 15 May 2025 18:33:22 GMT, Raffaello Giulietti <rgiulie...@openjdk.org> wrote:
> Here are many > [exmaples](https://github.com/openjdk/jmh/tree/master/jmh-samples/src/main/java/org/openjdk/jmh/samples) > on how to correctly use JMH. > > A > [blackhole](https://github.com/openjdk/jmh/blob/master/jmh-samples/src/main/java/org/openjdk/jmh/samples/JMHSample_09_Blackholes.java) > prevents the compiler to optimize away your code. Thanks for the tip. FWIW after doing that the numbers came out about the same - which is not surprising given that `Arrays.fill()` is just the same `for()` loop... #2 - After adding Blackhole jdk-25+22-94-g0318e49500e (master): Benchmark Mode Cnt Score Error Units ArrayDeque.ClearBenchmarkTestJMH.fillAndClear thrpt 50 35.663 ± 0.163 ops/s jdk-25+22-97-g9f0c5fe1f90 (JDK-8356993): Benchmark Mode Cnt Score Error Units ArrayDeque.ClearBenchmarkTestJMH.fillAndClear thrpt 50 35.112 ± 0.501 ops/s ------------- PR Review Comment: https://git.openjdk.org/jdk/pull/25237#discussion_r2091954179
