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Merge pull request #1143 from facebook/tableLevels 

Update table of compression levels
dev
Yann Collet 2018-05-19 14:40:37 -07:00 committed by GitHub
parent ca06a1d82f ade583948d
commit 27af35c110
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1 changed files with 65 additions and 65 deletions
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lib/compress/zstd_compress.c
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@ -743,7 +743,7 @@ ZSTD_compressionParameters ZSTD_adjustCParams_internal(ZSTD_compressionParameter
ZSTD_highbit32(tSize-1) + 1;
if (cPar.windowLog > srcLog) cPar.windowLog = srcLog;
}
if (cPar.hashLog > cPar.windowLog) cPar.hashLog = cPar.windowLog;
if (cPar.hashLog > cPar.windowLog+1) cPar.hashLog = cPar.windowLog+1;
{ U32 const cycleLog = ZSTD_cycleLog(cPar.chainLog, cPar.strategy);
if (cycleLog > cPar.windowLog)
cPar.chainLog -= (cycleLog - cPar.windowLog);
@ -3434,75 +3434,75 @@ static const ZSTD_compressionParameters ZSTD_defaultCParameters[4][ZSTD_MAX_CLEV
{ 19, 12, 13, 1, 6, 1, ZSTD_fast }, /* base for negative levels */
{ 19, 13, 14, 1, 7, 1, ZSTD_fast }, /* level 1 */
{ 19, 15, 16, 1, 6, 1, ZSTD_fast }, /* level 2 */
{ 20, 16, 17, 1, 5, 8, ZSTD_dfast }, /* level 3 */
{ 20, 17, 18, 1, 5, 8, ZSTD_dfast }, /* level 4 */
{ 20, 17, 18, 2, 5, 16, ZSTD_greedy }, /* level 5 */
{ 21, 17, 19, 2, 5, 16, ZSTD_lazy }, /* level 6 */
{ 21, 18, 19, 3, 5, 16, ZSTD_lazy }, /* level 7 */
{ 21, 18, 20, 3, 5, 16, ZSTD_lazy2 }, /* level 8 */
{ 21, 19, 20, 3, 5, 16, ZSTD_lazy2 }, /* level 9 */
{ 21, 19, 21, 4, 5, 16, ZSTD_lazy2 }, /* level 10 */
{ 22, 20, 22, 4, 5, 16, ZSTD_lazy2 }, /* level 11 */
{ 20, 16, 17, 1, 5, 1, ZSTD_dfast }, /* level 3 */
{ 20, 18, 18, 1, 5, 1, ZSTD_dfast }, /* level 4 */
{ 20, 18, 18, 2, 5, 2, ZSTD_greedy }, /* level 5 */
{ 21, 18, 19, 2, 5, 4, ZSTD_lazy }, /* level 6 */
{ 21, 18, 19, 3, 5, 8, ZSTD_lazy2 }, /* level 7 */
{ 21, 19, 19, 3, 5, 16, ZSTD_lazy2 }, /* level 8 */
{ 21, 19, 20, 4, 5, 16, ZSTD_lazy2 }, /* level 9 */
{ 21, 20, 21, 4, 5, 16, ZSTD_lazy2 }, /* level 10 */
{ 21, 21, 22, 4, 5, 16, ZSTD_lazy2 }, /* level 11 */
{ 22, 20, 22, 5, 5, 16, ZSTD_lazy2 }, /* level 12 */
{ 22, 21, 22, 4, 5, 32, ZSTD_btlazy2 }, /* level 13 */
{ 22, 21, 22, 5, 5, 32, ZSTD_btlazy2 }, /* level 14 */
{ 22, 22, 22, 6, 5, 32, ZSTD_btlazy2 }, /* level 15 */
{ 22, 21, 22, 4, 5, 48, ZSTD_btopt }, /* level 16 */
{ 23, 22, 22, 4, 4, 48, ZSTD_btopt }, /* level 17 */
{ 23, 22, 22, 5, 3, 64, ZSTD_btopt }, /* level 18 */
{ 23, 23, 22, 7, 3,128, ZSTD_btopt }, /* level 19 */
{ 25, 25, 23, 7, 3,128, ZSTD_btultra }, /* level 20 */
{ 26, 26, 24, 7, 3,256, ZSTD_btultra }, /* level 21 */
{ 27, 27, 25, 9, 3,512, ZSTD_btultra }, /* level 22 */
{ 23, 22, 22, 4, 4, 64, ZSTD_btopt }, /* level 17 */
{ 23, 23, 22, 6, 3,256, ZSTD_btopt }, /* level 18 */
{ 23, 24, 22, 7, 3,256, ZSTD_btultra }, /* level 19 */
{ 25, 25, 23, 7, 3,256, ZSTD_btultra }, /* level 20 */
{ 26, 26, 24, 7, 3,512, ZSTD_btultra }, /* level 21 */
{ 27, 27, 25, 9, 3,999, ZSTD_btultra }, /* level 22 */
},
{ /* for srcSize <= 256 KB */
/* W, C, H, S, L, T, strat */
{ 18, 12, 13, 1, 5, 1, ZSTD_fast }, /* base for negative levels */
{ 18, 13, 14, 1, 6, 1, ZSTD_fast }, /* level 1 */
{ 18, 14, 13, 1, 5, 8, ZSTD_dfast }, /* level 2 */
{ 18, 16, 15, 1, 5, 8, ZSTD_dfast }, /* level 3 */
{ 18, 15, 17, 1, 5, 8, ZSTD_greedy }, /* level 4.*/
{ 18, 16, 17, 4, 5, 8, ZSTD_greedy }, /* level 5.*/
{ 18, 16, 17, 3, 5, 8, ZSTD_lazy }, /* level 6.*/
{ 18, 17, 17, 4, 4, 8, ZSTD_lazy }, /* level 7 */
{ 18, 17, 17, 4, 4, 8, ZSTD_lazy2 }, /* level 8 */
{ 18, 17, 17, 5, 4, 8, ZSTD_lazy2 }, /* level 9 */
{ 18, 17, 17, 6, 4, 8, ZSTD_lazy2 }, /* level 10 */
{ 18, 18, 17, 6, 4, 8, ZSTD_lazy2 }, /* level 11.*/
{ 18, 18, 17, 5, 4, 8, ZSTD_btlazy2 }, /* level 12.*/
{ 18, 19, 17, 7, 4, 8, ZSTD_btlazy2 }, /* level 13 */
{ 18, 18, 18, 4, 4, 16, ZSTD_btopt }, /* level 14.*/
{ 18, 18, 18, 4, 3, 16, ZSTD_btopt }, /* level 15.*/
{ 18, 19, 18, 6, 3, 32, ZSTD_btopt }, /* level 16.*/
{ 18, 19, 18, 8, 3, 64, ZSTD_btopt }, /* level 17.*/
{ 18, 19, 18, 9, 3,128, ZSTD_btopt }, /* level 18.*/
{ 18, 19, 18, 10, 3,256, ZSTD_btopt }, /* level 19.*/
{ 18, 19, 18, 11, 3,512, ZSTD_btultra }, /* level 20.*/
{ 18, 19, 18, 12, 3,512, ZSTD_btultra }, /* level 21.*/
{ 18, 19, 18, 13, 3,512, ZSTD_btultra }, /* level 22.*/
{ 18, 14, 14, 1, 5, 1, ZSTD_dfast }, /* level 2 */
{ 18, 16, 16, 1, 4, 1, ZSTD_dfast }, /* level 3 */
{ 18, 16, 17, 2, 5, 2, ZSTD_greedy }, /* level 4.*/
{ 18, 18, 18, 3, 5, 2, ZSTD_greedy }, /* level 5.*/
{ 18, 18, 19, 3, 5, 4, ZSTD_lazy }, /* level 6.*/
{ 18, 18, 19, 4, 4, 4, ZSTD_lazy }, /* level 7 */
{ 18, 18, 19, 4, 4, 8, ZSTD_lazy2 }, /* level 8 */
{ 18, 18, 19, 5, 4, 8, ZSTD_lazy2 }, /* level 9 */
{ 18, 18, 19, 6, 4, 8, ZSTD_lazy2 }, /* level 10 */
{ 18, 18, 19, 5, 4, 16, ZSTD_btlazy2 }, /* level 11.*/
{ 18, 19, 19, 6, 4, 16, ZSTD_btlazy2 }, /* level 12.*/
{ 18, 19, 19, 8, 4, 16, ZSTD_btlazy2 }, /* level 13 */
{ 18, 18, 19, 4, 4, 24, ZSTD_btopt }, /* level 14.*/
{ 18, 18, 19, 4, 3, 24, ZSTD_btopt }, /* level 15.*/
{ 18, 19, 19, 6, 3, 64, ZSTD_btopt }, /* level 16.*/
{ 18, 19, 19, 8, 3,128, ZSTD_btopt }, /* level 17.*/
{ 18, 19, 19, 10, 3,256, ZSTD_btopt }, /* level 18.*/
{ 18, 19, 19, 10, 3,256, ZSTD_btultra }, /* level 19.*/
{ 18, 19, 19, 11, 3,512, ZSTD_btultra }, /* level 20.*/
{ 18, 19, 19, 12, 3,512, ZSTD_btultra }, /* level 21.*/
{ 18, 19, 19, 13, 3,999, ZSTD_btultra }, /* level 22.*/
},
{ /* for srcSize <= 128 KB */
/* W, C, H, S, L, T, strat */
{ 17, 12, 12, 1, 5, 1, ZSTD_fast }, /* level 0 - not used */
{ 17, 12, 12, 1, 5, 1, ZSTD_fast }, /* base for negative levels */
{ 17, 12, 13, 1, 6, 1, ZSTD_fast }, /* level 1 */
{ 17, 13, 16, 1, 5, 1, ZSTD_fast }, /* level 2 */
{ 17, 16, 16, 2, 5, 8, ZSTD_dfast }, /* level 3 */
{ 17, 13, 15, 3, 4, 8, ZSTD_greedy }, /* level 4 */
{ 17, 15, 17, 4, 4, 8, ZSTD_greedy }, /* level 5 */
{ 17, 16, 17, 3, 4, 8, ZSTD_lazy }, /* level 6 */
{ 17, 15, 17, 4, 4, 8, ZSTD_lazy2 }, /* level 7 */
{ 17, 13, 15, 1, 5, 1, ZSTD_fast }, /* level 2 */
{ 17, 15, 16, 2, 5, 1, ZSTD_dfast }, /* level 3 */
{ 17, 17, 17, 2, 4, 1, ZSTD_dfast }, /* level 4 */
{ 17, 16, 17, 3, 4, 2, ZSTD_greedy }, /* level 5 */
{ 17, 17, 17, 3, 4, 4, ZSTD_lazy }, /* level 6 */
{ 17, 17, 17, 3, 4, 8, ZSTD_lazy2 }, /* level 7 */
{ 17, 17, 17, 4, 4, 8, ZSTD_lazy2 }, /* level 8 */
{ 17, 17, 17, 5, 4, 8, ZSTD_lazy2 }, /* level 9 */
{ 17, 17, 17, 6, 4, 8, ZSTD_lazy2 }, /* level 10 */
{ 17, 17, 17, 7, 4, 8, ZSTD_lazy2 }, /* level 11 */
{ 17, 17, 17, 8, 4, 8, ZSTD_lazy2 }, /* level 12 */
{ 17, 18, 17, 6, 4, 8, ZSTD_btlazy2 }, /* level 13.*/
{ 17, 17, 17, 7, 3, 8, ZSTD_btopt }, /* level 14.*/
{ 17, 17, 17, 7, 3, 16, ZSTD_btopt }, /* level 15.*/
{ 17, 18, 17, 7, 3, 32, ZSTD_btopt }, /* level 16.*/
{ 17, 18, 17, 7, 3, 64, ZSTD_btopt }, /* level 17.*/
{ 17, 18, 17, 7, 3,256, ZSTD_btopt }, /* level 18.*/
{ 17, 18, 17, 8, 3,256, ZSTD_btopt }, /* level 19.*/
{ 17, 18, 17, 6, 4, 16, ZSTD_btlazy2 }, /* level 12 */
{ 17, 18, 17, 8, 4, 16, ZSTD_btlazy2 }, /* level 13.*/
{ 17, 18, 17, 4, 4, 32, ZSTD_btopt }, /* level 14.*/
{ 17, 18, 17, 6, 3, 64, ZSTD_btopt }, /* level 15.*/
{ 17, 18, 17, 7, 3,128, ZSTD_btopt }, /* level 16.*/
{ 17, 18, 17, 7, 3,256, ZSTD_btopt }, /* level 17.*/
{ 17, 18, 17, 8, 3,256, ZSTD_btopt }, /* level 18.*/
{ 17, 18, 17, 8, 3,256, ZSTD_btultra }, /* level 19.*/
{ 17, 18, 17, 9, 3,256, ZSTD_btultra }, /* level 20.*/
{ 17, 18, 17, 10, 3,256, ZSTD_btultra }, /* level 21.*/
{ 17, 18, 17, 11, 3,512, ZSTD_btultra }, /* level 22.*/
@ -3510,25 +3510,25 @@ static const ZSTD_compressionParameters ZSTD_defaultCParameters[4][ZSTD_MAX_CLEV
{ /* for srcSize <= 16 KB */
/* W, C, H, S, L, T, strat */
{ 14, 12, 13, 1, 5, 1, ZSTD_fast }, /* base for negative levels */
{ 14, 14, 14, 1, 6, 1, ZSTD_fast }, /* level 1 */
{ 14, 14, 14, 1, 4, 1, ZSTD_fast }, /* level 2 */
{ 14, 14, 14, 1, 4, 6, ZSTD_dfast }, /* level 3.*/
{ 14, 14, 14, 4, 4, 6, ZSTD_greedy }, /* level 4.*/
{ 14, 14, 14, 3, 4, 6, ZSTD_lazy }, /* level 5.*/
{ 14, 14, 14, 4, 4, 6, ZSTD_lazy2 }, /* level 6 */
{ 14, 14, 14, 5, 4, 6, ZSTD_lazy2 }, /* level 7 */
{ 14, 14, 14, 6, 4, 6, ZSTD_lazy2 }, /* level 8.*/
{ 14, 15, 14, 6, 4, 6, ZSTD_btlazy2 }, /* level 9.*/
{ 14, 15, 14, 3, 3, 6, ZSTD_btopt }, /* level 10.*/
{ 14, 15, 14, 6, 3, 8, ZSTD_btopt }, /* level 11.*/
{ 14, 14, 15, 1, 5, 1, ZSTD_fast }, /* level 1 */
{ 14, 14, 15, 1, 4, 1, ZSTD_fast }, /* level 2 */
{ 14, 14, 14, 2, 4, 1, ZSTD_dfast }, /* level 3.*/
{ 14, 14, 14, 4, 4, 2, ZSTD_greedy }, /* level 4.*/
{ 14, 14, 14, 3, 4, 4, ZSTD_lazy }, /* level 5.*/
{ 14, 14, 14, 4, 4, 8, ZSTD_lazy2 }, /* level 6 */
{ 14, 14, 14, 6, 4, 8, ZSTD_lazy2 }, /* level 7 */
{ 14, 14, 14, 8, 4, 8, ZSTD_lazy2 }, /* level 8.*/
{ 14, 15, 14, 5, 4, 8, ZSTD_btlazy2 }, /* level 9.*/
{ 14, 15, 14, 9, 4, 8, ZSTD_btlazy2 }, /* level 10.*/
{ 14, 15, 14, 3, 4, 12, ZSTD_btopt }, /* level 11.*/
{ 14, 15, 14, 6, 3, 16, ZSTD_btopt }, /* level 12.*/
{ 14, 15, 14, 6, 3, 24, ZSTD_btopt }, /* level 13.*/
{ 14, 15, 15, 6, 3, 48, ZSTD_btopt }, /* level 14.*/
{ 14, 15, 15, 6, 3, 64, ZSTD_btopt }, /* level 15.*/
{ 14, 15, 15, 6, 3, 96, ZSTD_btopt }, /* level 16.*/
{ 14, 15, 15, 6, 3,128, ZSTD_btopt }, /* level 17.*/
{ 14, 15, 15, 6, 3,256, ZSTD_btopt }, /* level 18.*/
{ 14, 15, 15, 7, 3,256, ZSTD_btopt }, /* level 19.*/
{ 14, 15, 15, 8, 3,256, ZSTD_btopt }, /* level 18.*/
{ 14, 15, 15, 6, 3,256, ZSTD_btultra }, /* level 19.*/
{ 14, 15, 15, 8, 3,256, ZSTD_btultra }, /* level 20.*/
{ 14, 15, 15, 9, 3,256, ZSTD_btultra }, /* level 21.*/
{ 14, 15, 15, 10, 3,512, ZSTD_btultra }, /* level 22.*/