[PR 14578 ](https://github.com/openjdk/jdk/pull/14578) still has unresolved discussions, continue to make improvements.
# Benchmark Result sh make/devkit/createJMHBundle.sh bash configure --with-jmh=build/jmh/jars make test TEST="micro:java.util.UUIDBench.toString" ## 1. [aliyun_ecs_c8i.xlarge](https://help.aliyun.com/document_detail/25378.html#c8i) * cpu : intel xeon sapphire rapids (x64) ``` diff -Benchmark (size) Mode Cnt Score Error Units (baseline) -UUIDBench.toString 20000 thrpt 15 62.019 ± 0.622 ops/us +Benchmark (size) Mode Cnt Score Error Units +UUIDBench.toString 20000 thrpt 15 83.568 ± 0.401 ops/us (+34.74%) ## 2. [aliyun_ecs_c8a.xlarge](https://help.aliyun.com/document_detail/25378.html#c8a) * cpu : amd epc genoa (x64) ``` diff -Benchmark (size) Mode Cnt Score Error Units (baseline) -UUIDBench.toString 20000 thrpt 15 88.668 ± 0.672 ops/us +Benchmark (size) Mode Cnt Score Error Units +UUIDBench.toString 20000 thrpt 15 95.653 ± 0.262 ops/us (+7.87%) ## 3. [aliyun_ecs_c8y.xlarge](https://help.aliyun.com/document_detail/25378.html#c8y) * cpu : aliyun yitian 710 (aarch64) ``` diff -Benchmark (size) Mode Cnt Score Error Units (baseline) -UUIDBench.toString 20000 thrpt 15 49.382 ± 2.160 ops/us +Benchmark (size) Mode Cnt Score Error Units +UUIDBench.toString 20000 thrpt 15 51.159 ± 1.639 ops/us ## 4. MacBookPro M1 Pro ``` diff -Benchmark (size) Mode Cnt Score Error Units (baseline) -UUIDBench.toString 20000 thrpt 15 103.543 ± 0.963 ops/us +Benchmark (size) Mode Cnt Score Error Units +UUIDBench.toString 20000 thrpt 15 110.976 ± 0.685 ops/us (+7.17%) ## 5. Orange Pi 5 Plus ``` diff -Benchmark (size) Mode Cnt Score Error Units (baseline) -UUIDBench.toString 20000 thrpt 15 33.532 ± 0.396 ops/us +Benchmark (size) Mode Cnt Score Error Units (PR) +UUIDBench.toString 20000 thrpt 15 33.054 ± 0.190 ops/us (-4.42%) ------------- Commit messages: - use big endian - 8311207: Optimization for j.u.UUID.toString Changes: https://git.openjdk.org/jdk/pull/14745/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=14745&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8311207 Stats: 40 lines in 2 files changed: 7 ins; 0 del; 33 mod Patch: https://git.openjdk.org/jdk/pull/14745.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/14745/head:pull/14745 PR: https://git.openjdk.org/jdk/pull/14745
