From: Yann Collet Date: Wed, 4 Nov 2015 23:48:37 +0000 (+0100) Subject: level tuning X-Git-Tag: zstd-0.3.3^2 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=92309cb37e167534fc25489ff1b965862a4619fd;p=thirdparty%2Fzstd.git level tuning --- diff --git a/images/CSpeed.png b/images/CSpeed.png index 6e60dbc78..88d302c8a 100644 Binary files a/images/CSpeed.png and b/images/CSpeed.png differ diff --git a/lib/zstdhc_static.h b/lib/zstdhc_static.h index bbe157134..0cf7476b7 100644 --- a/lib/zstdhc_static.h +++ b/lib/zstdhc_static.h @@ -96,7 +96,7 @@ size_t ZSTD_HC_compressEnd(ZSTD_HC_CCtx* ctx, void* dst, size_t maxDstSize); /* ************************************* * Pre-defined compression levels ***************************************/ -#define ZSTD_HC_MAX_CLEVEL 26 +#define ZSTD_HC_MAX_CLEVEL 22 static const ZSTD_HC_parameters ZSTD_HC_defaultParameters[ZSTD_HC_MAX_CLEVEL+1] = { /* W, C, H, S, L, strat */ { 18, 12, 14, 1, 4, ZSTD_HC_greedy }, /* level 0 - never used */ @@ -106,28 +106,26 @@ static const ZSTD_HC_parameters ZSTD_HC_defaultParameters[ZSTD_HC_MAX_CLEVEL+1] { 20, 17, 19, 3, 5, ZSTD_HC_greedy }, /* level 4 */ { 20, 18, 19, 2, 5, ZSTD_HC_lazy }, /* level 5 */ { 21, 18, 20, 3, 5, ZSTD_HC_lazy }, /* level 6 */ - { 21, 18, 20, 4, 5, ZSTD_HC_lazy }, /* level 7 */ + { 21, 20, 20, 3, 5, ZSTD_HC_lazy }, /* level 7 */ { 21, 19, 20, 4, 5, ZSTD_HC_lazy }, /* level 8 */ { 21, 19, 20, 5, 5, ZSTD_HC_lazy }, /* level 9 */ { 21, 20, 20, 5, 5, ZSTD_HC_lazy }, /* level 10 */ { 21, 20, 20, 5, 5, ZSTD_HC_lazydeep }, /* level 11 */ { 22, 20, 22, 5, 5, ZSTD_HC_lazydeep }, /* level 12 */ { 22, 20, 22, 6, 5, ZSTD_HC_lazydeep }, /* level 13 */ - { 21, 21, 22, 6, 5, ZSTD_HC_lazydeep }, /* level 14 */ + { 22, 21, 22, 6, 5, ZSTD_HC_lazydeep }, /* level 14 */ { 22, 21, 22, 6, 5, ZSTD_HC_lazydeep }, /* level 15 */ { 22, 21, 22, 5, 5, ZSTD_HC_btlazy2 }, /* level 16 */ - { 22, 23, 22, 4, 5, ZSTD_HC_btlazy2 }, /* level 17 */ - { 22, 22, 23, 7, 5, ZSTD_HC_btlazy2 }, /* level 18 */ - { 23, 23, 23, 7, 5, ZSTD_HC_btlazy2 }, /* level 19 */ - { 24, 25, 23, 8, 5, ZSTD_HC_btlazy2 }, /* level 20 */ - { 25, 25, 23, 8, 5, ZSTD_HC_btlazy2 }, /* level 21 */ - { 25, 25, 23, 8, 5, ZSTD_HC_btlazy2 }, /* level 22 */ - { 25, 25, 23, 8, 5, ZSTD_HC_btlazy2 }, /* level 23 */ - { 25, 25, 23, 8, 5, ZSTD_HC_btlazy2 }, /* level 24 */ - { 25, 25, 23, 8, 5, ZSTD_HC_btlazy2 }, /* level 25 */ - { 25, 25, 24, 9, 5, ZSTD_HC_btlazy2 }, /* level 26 */ + { 22, 22, 23, 5, 5, ZSTD_HC_btlazy2 }, /* level 17 */ + { 23, 23, 23, 5, 5, ZSTD_HC_btlazy2 }, /* level 18 */ + { 25, 25, 22, 5, 5, ZSTD_HC_btlazy2 }, /* level 19 */ + { 25, 25, 23, 8, 5, ZSTD_HC_btlazy2 }, /* level 20 */ + { 25, 26, 23, 9, 5, ZSTD_HC_btlazy2 }, /* level 21 */ + { 25, 26, 23, 9, 5, ZSTD_HC_btlazy2 }, /* level 22 */ }; + + #if defined (__cplusplus) } #endif