On Thu, 20 Jul 2023 16:01:27 GMT, Maurizio Cimadamore <mcimadam...@openjdk.org>
wrote:
> I don't see 2x slowdown. Which JDK are you using? Which platform?
I tried running the benchmarks with OpenJDK 20.0.1 and my own jdk built from
master and the results were similar. The test platform is based on Ubuntu
23.04, and the CPU is AMD Ryzen 7 3700X.
Here's the benchmark configuration I use:
@Warmup(iterations = 5, time = 3)
@Measurement(iterations = 5, time = 2)
@Fork(value = 1, jvmArgsAppend = {"-XX:+UseG1GC", "-Xms4g", "-Xmx4g"})
@BenchmarkMode(Mode.Throughput)
@OutputTimeUnit(TimeUnit.MILLISECONDS)
@State(Scope.Benchmark)
Also, I just ran the benchmarks on my ARM machine (Ubuntu 22.04, RK3588) and
here are the results:
Benchmark Mode Cnt Score Error Units
ByteArray.readByte thrpt 5 637843.606 ± 23657.623 ops/ms
ByteArray.readByteFromBuffer thrpt 5 350328.152 ± 3635.769 ops/ms
ByteArray.readInt thrpt 5 633518.784 ± 2558.021 ops/ms
ByteArray.readIntFromBuffer thrpt 5 327456.830 ± 4588.002 ops/ms
ByteArray.readLong thrpt 5 627409.162 ± 29301.498 ops/ms
ByteArray.readLongFromBuffer thrpt 5 328154.906 ± 1067.439 ops/ms
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PR Review Comment: https://git.openjdk.org/jdk/pull/14636#discussion_r1269686978
