On Fri, 13 Oct 2023 10:31:14 GMT, himichael <d...@openjdk.org> wrote:
> my question is that this feature should improve performance several times, > but it doesn't look like there's much difference between open jdk 22.19 and > jdk 8. is there a problem with my configuration ? Hello @himichael, Using your code snippet, please see the output below using the latest JDK and JDK 20 (which does not have AVX512 sort): JDK 20 (without AVX512 sort): `java -XX:CompileCommand=CompileThresholdScaling,java.util.DualPivotQuicksort::sort,0.0001 -XX:-TieredCompilation JDKSort ` elapse time -> **7501 ms** ------------------------------ JDK 22 (with AVX512 sort) `java -XX:CompileCommand=CompileThresholdScaling,java.util.DualPivotQuicksort::sort,0.0001 -XX:-TieredCompilation JDKSort` elapse time -> **1607 ms** It shows 4.66x speedup. ------------- PR Comment: https://git.openjdk.org/jdk/pull/14227#issuecomment-1762406455
