On Fri, 13 Oct 2023 10:31:14 GMT, himichael <d...@openjdk.org> wrote:
>> @himichael Please refer to [this >> question](https://stackoverflow.com/questions/504103/how-do-i-write-a-correct-micro-benchmark-in-java) >> for how to correctly benchmark Java code. > >> @himichael Please refer to [this >> question](https://stackoverflow.com/questions/504103/how-do-i-write-a-correct-micro-benchmark-in-java) >> for how to correctly benchmark Java code. > > thanks for your reply, but I think this has nothing to do with benchmark. > I sort a random array of int[], use: ```java.util.Arrays.sort()``` > in jdk 8, run command: > ```java JDKSort``` , the result display: 15079 ms > > in open jdk 22.19 , run command: > ```java --add-modules jdk.incubator.vector JDKSort``` > the result display: 11619 ms > > 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 ? @himichael Please try java -Xbatch -XX:-TieredCompilation JDKSort. The method DualPivotQuickSort.sort() needs to be C2 compiled for you to see the benefit. ------------- PR Comment: https://git.openjdk.org/jdk/pull/14227#issuecomment-1762361069
