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(parent: 18a4219) | patch
slightly improved compression ratio at levels 3 & 4
authorYann Collet <cyan@fb.com>
Wed, 16 Oct 2024 19:13:57 +0000 (12:13 -0700)
committerYann Collet <cyan@fb.com>
Thu, 17 Oct 2024 16:37:23 +0000 (09:37 -0700)
commit632677516616434c312d2fff2d84dcf0c9b78012
tree4ba7f668f9f348387b5cedbd34960d1145173a91tree
parent18a42190c24bfe40d899e3866b326e6e24c201c3commit | diff
slightly improved compression ratio at levels 3 & 4

The compression ratio benefits are small but consistent, i.e. always positive.
On `silesia.tar` corpus, this modification saves ~75 KB at level 3.
The measured speed cost is negligible, i.e. below noise level, between 0 and -1%.
lib/compress/zstd_double_fast.c diff | blob | blame | history
Mirror of https://github.com/facebook/zstd.git