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## Benchmark results
- compile by rustc 1.69.0 (84c898d65 2023-04-16)
0. x86_64-unknown-linux- @i5-4570:
| `name` | `gnu:en` | `gnu:ja` | `musl:en` | `musl:ja` |
|:------------------------|------------:|------------:|------------:|------------:|
| std_memchr_dbl | 13.231 µs | 23.129 µs | 12.698 µs | 23.043 µs |
| memchr_memchr_dbl | 6.756 µs | 7.663 µs | 6.923 µs | 7.672 µs |
| memx_memchr_dbl | 5.800 µs | 6.676 µs | 5.721 µs | 6.625 µs |
| memx_memchr_w_basic | 8.828 µs | 12.158 µs | 9.004 µs | 11.964 µs |
| memx_memchr_w_sse2 | 5.925 µs | 7.024 µs | 5.946 µs | 7.266 µs |
| memx_memchr_w_avx2 | 5.778 µs | 6.691 µs | 5.739 µs | 6.621 µs |
1. x86_64-unknown-linux- @Q6600:
| `name` | `gnu:en` | `gnu:ja` | `musl:en` | `musl:ja` |
|:------------------------|------------:|------------:|------------:|------------:|
| std_memchr_dbl | 34.396 µs | 53.992 µs | 34.464 µs | 53.938 µs |
| memchr_memchr_dbl | 21.987 µs | 26.918 µs | 21.827 µs | 28.187 µs |
| memx_memchr_dbl | 20.219 µs | 22.363 µs | 19.761 µs | 22.715 µs |
| memx_memchr_w_basic | 19.011 µs | 26.527 µs | 18.748 µs | 26.157 µs |
| memx_memchr_w_sse2 | 17.967 µs | 21.484 µs | 17.164 µs | 21.686 µs |
2. i686-unknown-linux- @Q6600:
| `name` | `gnu:en` | `gnu:ja` | `musl:en` | `musl:ja` |
|:------------------------|------------:|------------:|------------:|------------:|
| std_memchr_dbl | 35.572 µs | 55.636 µs | 34.767 µs | 54.448 µs |
| memchr_memchr_dbl | 42.535 µs | 53.605 µs | 43.199 µs | 58.502 µs |
| memx_memchr_dbl | 27.938 µs | 30.111 µs | 27.781 µs | 30.450 µs |
| memx_memchr_w_basic | 29.839 µs | 46.138 µs | 30.601 µs | 47.155 µs |
| memx_memchr_w_sse2 | 26.037 µs | 30.374 µs | 25.971 µs | 28.993 µs |
3. i586-unknown-linux- @Q6600:
| `name` | `gnu:en` | `gnu:ja` | `musl:en` | `musl:ja` |
|:------------------------|------------:|------------:|------------:|------------:|
| std_memchr_dbl | 36.138 µs | 56.384 µs | 36.677 µs | 55.752 µs |
| memchr_memchr_dbl | 41.318 µs | 52.430 µs | 43.244 µs | 58.727 µs |
| memx_memchr_dbl | 28.890 µs | 31.068 µs | 29.227 µs | 31.480 µs |
| memx_memchr_w_basic | 31.274 µs | 47.041 µs | 34.523 µs | 50.888 µs |
- `µs` is micro seconds
- `:en` is english haystack or short length.
- `:ja` is japanese haystack or long length.
- `gnu` is x86_64-unknown-linux-gnu
- `musl` is x86_64-unknown-linux-musl
- @i5-4570: bench on intel i5-4570 @ 3.2GHz
- @Q6600: bench on intel Q6600 @ 2.40GHz or armv7 1.5GHz