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level tuning

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This commit is contained in:
Yann Collet 2015-11-05 11:58:02 +01:00
parent 92309cb37e
commit 43ae161fe9
1 changed files with 8 additions and 9 deletions
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17
lib/zstdhc_static.h
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@ -53,7 +53,7 @@ typedef struct
U32 hashLog; /* dispatch table : larger == more memory, faster*/
U32 searchLog; /* nb of searches : larger == more compression, slower*/
U32 searchLength; /* size of matches : larger == faster decompression */
ZSTD_HC_strategy strategy; /* greedy, lazy, lazydeep */
ZSTD_HC_strategy strategy; /* faster to stronger : greedy, lazy, lazydeep, btlazy2 */
} ZSTD_HC_parameters;
/* parameters boundaries */
@ -106,7 +106,7 @@ 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, 20, 20, 3, 5, ZSTD_HC_lazy }, /* level 7 */
{ 21, 19, 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 */
@ -115,17 +115,16 @@ static const ZSTD_HC_parameters ZSTD_HC_defaultParameters[ZSTD_HC_MAX_CLEVEL+1]
{ 22, 20, 22, 6, 5, ZSTD_HC_lazydeep }, /* level 13 */
{ 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, 22, 23, 5, 5, ZSTD_HC_btlazy2 }, /* level 17 */
{ 22, 21, 22, 4, 5, ZSTD_HC_btlazy2 }, /* level 16 */
{ 23, 23, 23, 4, 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 */
{ 25, 25, 23, 5, 5, ZSTD_HC_btlazy2 }, /* level 19 */
{ 25, 25, 23, 6, 5, ZSTD_HC_btlazy2 }, /* level 20 */
{ 25, 26, 23, 8, 5, ZSTD_HC_btlazy2 }, /* level 21 */
{ 25, 26, 23, 8, 5, ZSTD_HC_btlazy2 }, /* level 22 */
};
#if defined (__cplusplus)
}
#endif