ddidderr/zstd-rs
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level tuning

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Yann Collet
2015-11-05 00:48:37 +01:00
parent 3137d1a059
commit 92309cb37e
2 changed files with 11 additions and 13 deletions
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lib/zstdhc_static.h
+11 -13
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@@ -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