On Thu, 22 Jun 2023 21:44:12 GMT, 温绍锦 <d...@openjdk.org> wrote:
>> By optimizing the implementation of java.lang.Long#fastUUID, the performance >> of the java.util.UUID#toString method can be significantly improved. >> >> The following are the test results of JMH: >> >> Benchmark Mode Cnt Score Error Units >> UUIDUtilsBenchmark.new thrpt 5 92676.550 ± 292.213 ops/ms >> UUIDUtilsBenchmark.original thrpt 5 37040.165 ± 1023.532 ops/ms > > 温绍锦 has updated the pull request incrementally with one additional commit > since the last revision: > > format code Latest benchmark results: * aliyun_c8i.xlarge (+23.25%) cpu intel xeon sapphire rapids (x64) ``` diff Benchmark (size) Mode Cnt Score Error Units -UUIDBench.toString 20000 thrpt 15 62.457 ± 0.226 ops/us +UUIDBench.toString 20000 thrpt 15 76.979 ± 1.011 ops/us * aliyun_c8a.xlarge (+29.93%) cpu amd epc genoa (x64) ``` diff Benchmark (size) Mode Cnt Score Error Units -UUIDBench.toString 20000 thrpt 15 65.673 ± 0.110 ops/us +UUIDBench.toString 20000 thrpt 15 85.331 ± 0.181 ops/us * aliyun_c8y.xlarge (+29.06%) cpu aliyun yitian 710 (aarch64) ``` diff Benchmark (size) Mode Cnt Score Error Units -UUIDBench.toString 20000 thrpt 15 32.198 ± 0.907 ops/us +UUIDBench.toString 20000 thrpt 15 41.555 ± 0.963 ops/us * aws_c5.xlarge (+35.29%) ``` diff Benchmark (size) Mode Cnt Score Error Units -UUIDBench.toString 20000 thrpt 15 46.003 ± 0.291 ops/us +UUIDBench.toString 20000 thrpt 15 62.239 ± 0.072 ops/us ------------- PR Comment: https://git.openjdk.org/jdk/pull/14578#issuecomment-1603379671
