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Use xxHash for the change detector #12644

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@bep bep commented Jul 6, 2024

Much faster compared to MD5:

name          old time/op    new time/op    delta
HashingFs-10    21.3µs ± 2%     3.2µs ±17%  -84.96%  (p=0.029 n=4+4)

name          old alloc/op   new alloc/op   delta
HashingFs-10    12.9kB ± 0%    12.8kB ± 1%   -1.31%  (p=0.029 n=4+4)

name          old allocs/op  new allocs/op  delta
HashingFs-10      10.0 ± 0%       7.0 ± 0%  -30.00%  (p=0.029 n=4+4)

Updates #12643

Much faster compared to MD5:

```
name          old time/op    new time/op    delta
HashingFs-10    21.3µs ± 2%     3.2µs ±17%  -84.96%  (p=0.029 n=4+4)

name          old alloc/op   new alloc/op   delta
HashingFs-10    12.9kB ± 0%    12.8kB ± 1%   -1.31%  (p=0.029 n=4+4)

name          old allocs/op  new allocs/op  delta
HashingFs-10      10.0 ± 0%       7.0 ± 0%  -30.00%  (p=0.029 n=4+4)
```

Updates gohugoio#12643
@bep bep force-pushed the feat/xxhashfiledetect-12643 branch from f282f80 to ea2d4f5 Compare July 6, 2024 14:31
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bep commented Jul 6, 2024

Merged in fb8909d

@bep bep closed this Jul 6, 2024
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