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zstd: Improve better/best compression #877

Merged
merged 2 commits into from Nov 10, 2023
Merged

zstd: Improve better/best compression #877

merged 2 commits into from Nov 10, 2023

Commits on Oct 23, 2023

  1. zstd: Improve better/best compression 

    * Improve filling of hash table.
* Skip similar checks.
* Improve bit estimate precision.

0.02 -> 0.3% improvement observed (input -> output size difference - relative is bigger)
    @klauspost
    klauspost committed Oct 23, 2023
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  2. Remove offset skip.

    @klauspost
    klauspost committed Oct 23, 2023
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