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minor rebalancing of level 13

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This new setup is slighly better on `silesia.tar` :
Ratio : 3.649 -> 3.655
Speed : 11.9 MB/s -> 12.2 MB/s
At the cost of more memory : 24 MB -> 32 MB
The new memory budget is a reasonable interpolation between neighboring levels 12 and 14:
level 12 : 24 MB
level 13 : 32 MB (increased from 24 MB)
level 14 : 48 MB
Window size remains unaffected (4 MB)
This commit is contained in:
Yann Collet 2021-09-01 13:02:07 -07:00
parent 6715096611
commit 70d89e5a12
1 changed files with 1 additions and 1 deletions
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lib/compress/zstd_compress.c
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@ -6207,7 +6207,7 @@ static const ZSTD_compressionParameters ZSTD_defaultCParameters[4][ZSTD_MAX_CLEV
{ 22, 21, 22, 4, 5, 16, ZSTD_lazy2 }, /* level 10 */
{ 22, 21, 22, 5, 5, 16, ZSTD_lazy2 }, /* level 11 */
{ 22, 21, 22, 6, 5, 32, ZSTD_lazy2 }, /* level 12 */
{ 22, 21, 22, 5, 5, 32, ZSTD_btlazy2 }, /* level 13 */
{ 22, 22, 22, 4, 5, 32, ZSTD_btlazy2 }, /* level 13 */
{ 22, 22, 23, 5, 5, 32, ZSTD_btlazy2 }, /* level 14 */
{ 22, 23, 23, 6, 5, 32, ZSTD_btlazy2 }, /* level 15 */
{ 22, 22, 22, 5, 5, 48, ZSTD_btopt }, /* level 16 */