> The goal is to develop faster sort routines for x86_64 CPUs by taking > advantage of AVX512 instructions. This enhancement provides an order of > magnitude speedup for Arrays.sort() using int, long, float and double arrays. > > This PR shows upto ~7x improvement for 32-bit datatypes (int, float) and upto > ~4.5x improvement for 64-bit datatypes (long, double) as shown in the > performance data below. > > > **Arrays.sort performance data using JMH benchmarks for arrays with random > data** > > | Arrays.sort benchmark | Array Size | Baseline > (us/op) | AVX512 Sort (us/op) | Speedup | > | --- | --- | --- | --- | --- > | > | ArraysSort.doubleSort | 10 | 0.034 | 0.035 > | 1.0 | > | ArraysSort.doubleSort | 25 | 0.116 | 0.089 > | 1.3 | > | ArraysSort.doubleSort | 50 | 0.282 | 0.291 > | 1.0 | > | ArraysSort.doubleSort | 75 | 0.474 | 0.358 > | 1.3 | > | ArraysSort.doubleSort | 100 | 0.654 | 0.623 > | 1.0 | > | ArraysSort.doubleSort | 1000 | 9.274 | 6.331 > | 1.5 | > | ArraysSort.doubleSort | 10000 | 323.339 | 71.228 > | **4.5** | > | ArraysSort.doubleSort | 100000 | 4471.871 | > 1002.748 | **4.5** | > | ArraysSort.doubleSort | 1000000 | 51660.742 | > 12921.295 | **4.0** | > | ArraysSort.floatSort | 10 | 0.045 | 0.046 > | 1.0 | > | ArraysSort.floatSort | 25 | 0.103 | 0.084 > | 1.2 | > | ArraysSort.floatSort | 50 | 0.285 | 0.33 > | 0.9 | > | ArraysSort.floatSort | 75 | 0.492 | 0.346 > | 1.4 | > | ArraysSort.floatSort | 100 | 0.597 | 0.326 > | 1.8 | > | ArraysSort.floatSort | 1000 | 9.811 | 5.294 > | 1.9 | > | ArraysSort.floatSort | 10000 | 323.955 | 50.547 > | **6.4** | > | ArraysSort.floatSort | 100000 | 4326.38 | 731.152 > | **5.9** | > | ArraysSort.floatSort | 1000000 | 52413.88 | > 8409.193 | **6.2** | > | ArraysSort.intSort | 10 | 0.033 | 0.033 > | 1.0 | > | ArraysSort.intSort | 25 | 0.086 | 0.051 > | 1.7 | > | ArraysSort.intSort | 50 | 0.236 | 0.151 > | 1.6 | > | ArraysSort.intSort | 75 | 0.416 | 0.332 > | 1.3 | > | ArraysSort.intSort | 100 | 0.63 | 0.521 > | 1.2 | > | ArraysSort.intSort | 1000 | 10.518 | 4.698 > | 2.2 | > | ArraysSort.intSort | 10000 | 309.659 | 42.518 > | **7.3** | > | ArraysSort.intSort | 100000 | 4130.917 | > 573.956 | **7.2** | > | ArraysSort.intSort | 1000000 | 49876.307 | > 6712.812 | **7.4** | > | ArraysSort.longSort | 10 | 0.036 | 0.037 > | 1.0 | > | ArraysSort.longSort | 25 | 0.094 | 0.08 > | 1.2 | > | ArraysSort.longSort | 50 | 0.218 | 0.227 > | 1.0 | > | ArraysSort.longSort | 75 | 0.466 | 0.402 > | 1.2 | > | ArraysSort.longSort | 100 | 0.76 | 0.58 > | 1.3 | > | ArraysSort.longSort | 1000 | 10.449 | 6.239 > | 1.7 | > | ArraysSort.longSort | 10000 | 307.074 | 70.284 > | **4.4** | > | ArraysSor...
Srinivas Vamsi Parasa has updated the pull request incrementally with one additional commit since the last revision: Update make/modules/java.base/Lib.gmk Co-authored-by: Erik Joelsson <37597443+erik...@users.noreply.github.com> ------------- Changes: - all: https://git.openjdk.org/jdk/pull/14227/files - new: https://git.openjdk.org/jdk/pull/14227/files/1746eedd..a0f006b6 Webrevs: - full: https://webrevs.openjdk.org/?repo=jdk&pr=14227&range=31 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=14227&range=30-31 Stats: 14 lines in 1 file changed: 0 ins; 0 del; 14 mod Patch: https://git.openjdk.org/jdk/pull/14227.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/14227/head:pull/14227 PR: https://git.openjdk.org/jdk/pull/14227
