Pass tables by pointer in Chunker.slide/updateDigest #28
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Passing them by value causes 4kB to be copied on the stack. name old time/op new time/op delta ChunkerWithSHA256-8 205ms ± 0% 205ms ± 0% -0.20% (p=0.001 n=10+10) Chunker-8 57.7ms ± 0% 57.6ms ± 0% -0.16% (p=0.035 n=9+10) NewChunker-8 97.2µs ± 2% 93.0µs ± 1% -4.28% (p=0.000 n=9+10) name old speed new speed delta ChunkerWithSHA256-8 164MB/s ± 0% 164MB/s ± 0% +0.20% (p=0.001 n=10+10) Chunker-8 582MB/s ± 0% 583MB/s ± 0% +0.16% (p=0.035 n=9+10)
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LGTM, thanks! |
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Passing them by value causes 4kB to be copied on the stack.
This fixes a performance regression introduced in 61d1f12.