On Sat, 13 Jul 2024 00:50:18 GMT, Shaojin Wen <d...@openjdk.org> wrote:
>> Currently, about 25% of the time spent by the Integer.parseInt and >> Long.parseLong methods is spent on the Character.digit method. >> >> The Character.digit method is common to all radixes. We can use a digit >> method optimized for Latin1 encoding radix 10 to improve the performance of >> Integer.parseInt and Long.parseLong methods. > > Shaojin Wen has updated the pull request incrementally with one additional > commit since the last revision: > > Reduce changes The performance numbers are as follows ## MacBook M1 Pro # baseline -Benchmark (size) Mode Cnt Score Error Units -Longs.parseLong 500 avgt 15 2.613 ? 0.020 us/op -Integers.parseInt 500 avgt 15 2.303 ? 0.006 us/op +Benchmark (size) Mode Cnt Score Error Units +Longs.parseLong 500 avgt 15 2.473 ? 0.020 us/op +5.66% +Integers.parseInt 500 avgt 15 2.219 ? 0.002 us/op +3.78% ## MacBook 2018 i9 -Benchmark (size) Mode Cnt Score Error Units -Integers.parseInt 500 avgt 15 3.114 ? 0.058 us/op -Longs.parseLong 500 avgt 15 3.569 ? 0.059 us/op +Benchmark (size) Mode Cnt Score Error Units +Integers.parseInt 500 avgt 15 3.038 ? 0.033 us/op +2.50% +Longs.parseLong 500 avgt 15 3.065 ? 0.032 us/op +16.44% ------------- PR Comment: https://git.openjdk.org/jdk/pull/20168#issuecomment-2226731713
