zstd: Improve better compression #364
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Try to find a better match by searching for a long match at the end of the current best match Before/after pairs.. Speed comparison not reliable, different Go versions. ``` silesia.tar zskp 3 211947520 65177448 1899 106.44 silesia.tar zskp 3 211947520 64595893 2007 100.68 gob-stream zskp 3 1911399616 185792019 9324 195.48 gob-stream zskp 3 1911399616 175034659 9636 189.17 enwik9 zskp 3 1000000000 294540704 11725 81.34 enwik9 zskp 3 1000000000 292243069 12162 78.41 github-june-2days-2019.json zskp 3 6273951764 537511906 29252 204.54 github-june-2days-2019.json zskp 3 6273951764 524340691 34043 175.75 rawstudio-mint14.tar zskp 3 8558382592 3224863213 71751 113.75 rawstudio-mint14.tar zskp 3 8558382592 3158085214 77675 105.08 nyc-taxi-data-10M.csv zskp 3 3325605752 538490114 25683 123.49 nyc-taxi-data-10M.csv zskp 3 3325605752 530289687 25239 125.66 ```
mostynb
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Apr 28, 2021
This includes the following zstd improvement since v1.12.1: * Add helpers to compress/decompress zstd inside zip files klauspost/compress#363 * Improve best compression klauspost/compress#360 * Improve better compression klauspost/compress#364 * Improve compression with dictionaries too klauspost/compress#365
mostynb
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Apr 28, 2021
This includes the following zstd improvement since v1.12.1: * Add helpers to compress/decompress zstd inside zip files klauspost/compress#363 * Improve best compression klauspost/compress#360 * Improve better compression klauspost/compress#364 * Improve compression with dictionaries too klauspost/compress#365
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Try to find a better match by searching for a long match
at the end of the current best match
Before/after pairs.. Speed comparison not reliable, different Go versions. Speed loss appears to be ~1%.