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readme: add busybox ls
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README.md
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README.md
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(because io_uring). `lsr` does work on macOS/BSD as well, but will not see the
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syscall batching benefits that are available with io_uring.
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| Program | Version |
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|:-------:|:-------:|
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| lsr | 0.1.0 |
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| ls | 9.7 |
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| eza | 0.21.3 |
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| lsd | 1.1.5 |
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| uutils | 0.0.30 |
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| Program | Version |
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|:--------:|:-------:|
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| lsr | 0.1.0 |
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| ls | 9.7 |
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| eza | 0.21.3 |
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| lsd | 1.1.5 |
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| uutils | 0.0.30 |
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| busybox | 1.36.1 |
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### Time
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Data gathered with `hyperfine` on a directory of `n` plain files.
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| Program | n=10 | n=100 | n=1,000 | n=10,000 |
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|:-------------:|:--------:|:--------:|:-------:|:--------:|
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| lsr -al | 372.6 µs | 634.3 µs | 2.7 ms | 22.1 ms |
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| ls -al | 1.4 ms | 1.7 ms | 4.7 ms | 38.0 ms |
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| eza -al | 2.9 ms | 3.3 ms | 6.6 ms | 40.2 ms |
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| lsd -al | 2.1 ms | 3.5 ms | 17.0 ms | 153.4 ms |
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| uutils ls -al | 2.9 ms | 3.6 ms | 11.3 ms | 89.6 ms |
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| Program | n=10 | n=100 | n=1,000 | n=10,000 |
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|:--------------:|:--------:|:--------:|:-------:|:--------:|
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| lsr -al | 372.6 µs | 634.3 µs | 2.7 ms | 22.1 ms |
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| busybox ls -al | 403.8 µs | 1.1 ms | 3.5 ms | 32.5 ms |
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| ls -al | 1.4 ms | 1.7 ms | 4.7 ms | 38.0 ms |
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| eza -al | 2.9 ms | 3.3 ms | 6.6 ms | 40.2 ms |
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| lsd -al | 2.1 ms | 3.5 ms | 17.0 ms | 153.4 ms |
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| uutils ls -al | 2.9 ms | 3.6 ms | 11.3 ms | 89.6 ms |
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### Syscalls
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Data gathered with `strace -c` on a directory of `n` plain files. (Lower is better)
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| Program | n=10 | n=100 | n=1,000 | n=10,000 |
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|:-------------:|:----:|:-----:|:-------:|:--------:|
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| lsr -al | 20 | 28 | 105 | 848 |
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| ls -al | 405 | 675 | 3,377 | 30,396 |
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| eza -al | 319 | 411 | 1,320 | 10,364 |
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| lsd -al | 508 | 1,408 | 10,423 | 100,512 |
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| uutils ls -al | 445 | 986 | 6,397 | 10,005 |
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| Program | n=10 | n=100 | n=1,000 | n=10,000 |
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|:--------------:|:----:|:-----:|:-------:|:--------:|
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| lsr -al | 20 | 28 | 105 | 848 |
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| busybox ls -al | 84 | 410 | 2,128 | 20,383 |
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| ls -al | 405 | 675 | 3,377 | 30,396 |
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| eza -al | 319 | 411 | 1,320 | 10,364 |
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| lsd -al | 508 | 1,408 | 10,423 | 100,512 |
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| uutils ls -al | 445 | 986 | 6,397 | 10,005 |