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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_memset | 2.006 µs | 3.914 µs | 2.295 µs | 5.377 µs |
| libc_memset | 2.003 µs | 4.015 µs | 2.139 µs | 5.236 µs |
| memx_memset | 3.388 µs | 3.537 µs | 3.515 µs | 3.499 µs |
| memx_memset_basic | 3.733 µs | 4.086 µs | 3.933 µs | 4.057 µs |
| memx_memset_sse2 | 3.322 µs | 3.446 µs | 3.324 µs | 3.446 µs |
| memx_memset_avx2 | 3.445 µs | 3.441 µs | 3.515 µs | 3.436 µs |
1. x86_64-unknown-linux- @Q6600:
| `name` | `gnu:en` | `gnu:ja` | `musl:en` | `musl:ja` |
|:------------------------|------------:|------------:|------------:|------------:|
| std_memset | 5.027 µs | 10.801 µs | 5.675 µs | 9.825 µs |
| libc_memset | 4.952 µs | 10.616 µs | 5.671 µs | 9.992 µs |
| memx_memset | 6.656 µs | 7.924 µs | 6.657 µs | 7.908 µs |
| memx_memset_basic | 8.125 µs | 7.829 µs | 8.153 µs | 7.843 µs |
| memx_memset_sse2 | 6.668 µs | 7.918 µs | 6.662 µs | 7.904 µs |
2. i686-unknown-linux- @Q6600:
| `name` | `gnu:en` | `gnu:ja` | `musl:en` | `musl:ja` |
|:------------------------|------------:|------------:|------------:|------------:|
| std_memset | 8.886 µs | 9.921 µs | 11.520 µs | 17.585 µs |
| libc_memset | 8.696 µs | 9.868 µs | 11.554 µs | 17.662 µs |
| memx_memset | 10.508 µs | 11.029 µs | 12.145 µs | 12.334 µs |
| memx_memset_basic | 8.796 µs | 14.588 µs | 9.960 µs | 15.654 µs |
| memx_memset_sse2 | 10.430 µs | 10.559 µs | 11.902 µs | 11.907 µs |
3. i586-unknown-linux- @Q6600:
| `name` | `gnu:en` | `gnu:ja` | `musl:en` | `musl:ja` |
|:------------------------|------------:|------------:|------------:|------------:|
| std_memset | 8.339 µs | 10.199 µs | 11.097 µs | 17.336 µs |
| libc_memset | 8.351 µs | 10.230 µs | 11.183 µs | 17.384 µs |
| memx_memset | 9.896 µs | 11.374 µs | 11.736 µs | 12.586 µs |
| memx_memset_basic | 10.200 µs | 14.680 µs | 11.637 µs | 16.207 µs |
- compile by rustc 1.53.0 (53cb7b09b 2021-06-17)
1. x86_64-unknown-linux-:
| `name` | `gnu:en` | `gnu:ja` | `musl:en` | `musl:ja` |
|:------------------------|------------:|------------:|------------:|------------:|
| std_memset | 1.766 us | 3.818 us | 1.458 us | 3.266 us |
| libc_memset | 1.779 us | 3.777 us | 1.436 us | 3.253 us |
| memx_memset | 1.131 us | 2.324 us | 1.133 us | 2.501 us |
| memx_memset_basic | 1.391 us | 2.953 us | 1.402 us | 3.125 us |
| memx_memset_sse2 | 1.165 us | 2.348 us | 1.162 us | 2.515 us |
2. i686-unknown-linux-:
| `name` | `gnu:en` | `gnu:ja` | `musl:en` | `musl:ja` |
|:------------------------|------------:|------------:|------------:|------------:|
| std_memset | 1.083 us | 2.584 us | 2.258 us | 4.164 us |
| libc_memset | 1.211 us | 2.553 us | 2.314 us | 4.228 us |
| memx_memset | 1.102 us | 2.517 us | 1.217 us | 2.417 us |
| memx_memset_basic | 2.677 us | 4.905 us | 2.778 us | 5.030 us |
| memx_memset_sse2 | 1.109 us | 2.507 us | 1.220 us | 2.387 us |
3. i586-unknown-linux-:
| `name` | `gnu:en` | `gnu:ja` | `musl:en` | `musl:ja` |
|:------------------------|------------:|------------:|------------:|------------:|
| std_memset | 1.128 us | 2.549 us | 2.303 us | 4.251 us |
| libc_memset | 1.193 us | 2.533 us | 2.295 us | 4.184 us |
| memx_memset | 2.846 us | 5.331 us | 2.675 us | 5.077 us |
| memx_memset_basic | 2.763 us | 5.267 us | 2.743 us | 5.178 us |
4. armv7-linux-androideabi:
| `name` | `andr:en` | `andr:ja` | `musl:en` | `musl:ja` |
|:------------------------|------------:|------------:|------------:|------------:|
| std_memset | 358.810 us | 419.420 us | 7.229 us | 8.361 us |
| libc_memset | 199.310 us | 365.870 us | 4.615 us | 8.253 us |
| memx_memset | 144.800 us | 265.430 us | 8.695 us | 14.089 us |
| memx_memset_basic | 147.050 us | 261.970 us | 7.665 us | 15.335 us |
- `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