On Tue, 10 Oct 2023 02:54:05 GMT, Shaojin Wen <d...@openjdk.org> wrote:
> By extracting the code that creates the exception, the CodeSize of these > methods is less than the default FreqInlineSize 325. and for the scenario > where the most commonly used radix is not specified and the String coder is > LATIN1, fast-path can improves the performance 10% of > parseInt(String)/parseLong(String). By extracting the code that creates the exception, the CodeSize of these methods is less than the default FreqInlineSize 325. codeSize 350 bytes -> 260 bytes public static int parseUnsignedInt(CharSequence s, int beginIndex, int endIndex, int radix) codeSize 327 bytes -> 283 bytes public static long parseLong(CharSequence s, int beginIndex, int endIndex, int radix) codeSize 362 bytes -> 269 bytes public static long parseUnsignedLong(CharSequence s, int beginIndex, int endIndex, int radix) Performance numbers running on MacBook M1 Pro: -Benchmark (size) Mode Cnt Score Error Units -Integers.parseInt 500 avgt 15 2.501 ? 0.028 us/op -Integers.parseIntCharSequence 500 avgt 15 2.558 ? 0.042 us/op -Integers.parseUnisgnedIntCharSequence 500 avgt 15 3.883 ? 0.040 us/op -Integers.parseUnsignedInt 500 avgt 15 2.266 ? 0.008 us/op -Longs.parseLong 500 avgt 15 2.790 ? 0.017 us/op -Longs.parseLongCharSequence 500 avgt 15 3.779 ? 0.043 us/op -Longs.parseUnsignedLong 500 avgt 15 2.421 ? 0.032 us/op -Longs.parseUnsignedLongCharSequence 500 avgt 15 4.107 ? 0.046 us/op +Benchmark (size) Mode Cnt Score Error Units +Integers.parseInt 500 avgt 15 2.238 ? 0.017 us/op (+11.76) +Integers.parseIntCharSequence 500 avgt 15 2.515 ? 0.004 us/op (+1.71) +Integers.parseUnisgnedIntCharSequence 500 avgt 15 2.274 ? 0.031 us/op (+70.76) +Integers.parseUnsignedInt 500 avgt 15 2.265 ? 0.006 us/op (+0.05) +Longs.parseLong 500 avgt 15 2.492 ? 0.023 us/op (+11.96) +Longs.parseLongCharSequence 500 avgt 15 2.807 ? 0.031 us/op (+34.63) +Longs.parseUnsignedLong 500 avgt 15 2.404 ? 0.047 us/op (+0.71) +Longs.parseUnsignedLongCharSequence 500 avgt 15 2.379 ? 0.025 us/op (+72.64) ------------- PR Comment: https://git.openjdk.org/jdk/pull/16112#issuecomment-1754259343
