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2aa14b1ab2
Updates the kernel's zstd library to v1.5.2, the latest zstd release. The upstream tag it is updated to is `v1.5.2-kernel`, which contains several cherry-picked commits on top of the v1.5.2 release which are required for the kernel update. I will create this tag once the PR is ready to merge, until then reference the temporary upstream branch `v1.5.2-kernel-cherrypicks`. I plan to submit this patch as part of the v6.2 merge window. I've done basic build testing & testing on x86-64, i386, and aarch64. I'm merging these patches into my `zstd-next` branch, which is pulled into `linux-next` for further testing. I've benchmarked BtrFS with zstd compression on a x86-64 machine, and saw these results. Decompression speed is a small win across the board. The lower compression levels 1-4 see both compression speed and compression ratio wins. The higher compression levels see a small compression speed loss and about neutral ratio. I expect the lower compression levels to be used much more heavily than the high compression levels, so this should be a net win. Level CTime DTime Ratio 1 -2.95% -1.1% -0.7% 3 -3.5% -1.2% -0.5% 5 +3.7% -1.0% +0.0% 7 +3.2% -0.9% +0.0% 9 -4.3% -0.8% +0.1% Signed-off-by: Nick Terrell <terrelln@fb.com>
133 lines
6.7 KiB
C
133 lines
6.7 KiB
C
/*
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* Copyright (c) Yann Collet, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under both the BSD-style license (found in the
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* LICENSE file in the root directory of this source tree) and the GPLv2 (found
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* in the COPYING file in the root directory of this source tree).
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* You may select, at your option, one of the above-listed licenses.
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*/
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#ifndef ZSTD_CLEVELS_H
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#define ZSTD_CLEVELS_H
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#define ZSTD_STATIC_LINKING_ONLY /* ZSTD_compressionParameters */
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#include <linux/zstd.h>
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/*-===== Pre-defined compression levels =====-*/
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#define ZSTD_MAX_CLEVEL 22
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__attribute__((__unused__))
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static const ZSTD_compressionParameters ZSTD_defaultCParameters[4][ZSTD_MAX_CLEVEL+1] = {
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{ /* "default" - for any srcSize > 256 KB */
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/* W, C, H, S, L, TL, strat */
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{ 19, 12, 13, 1, 6, 1, ZSTD_fast }, /* base for negative levels */
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{ 19, 13, 14, 1, 7, 0, ZSTD_fast }, /* level 1 */
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{ 20, 15, 16, 1, 6, 0, ZSTD_fast }, /* level 2 */
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{ 21, 16, 17, 1, 5, 0, ZSTD_dfast }, /* level 3 */
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{ 21, 18, 18, 1, 5, 0, ZSTD_dfast }, /* level 4 */
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{ 21, 18, 19, 3, 5, 2, ZSTD_greedy }, /* level 5 */
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{ 21, 18, 19, 3, 5, 4, ZSTD_lazy }, /* level 6 */
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{ 21, 19, 20, 4, 5, 8, ZSTD_lazy }, /* level 7 */
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{ 21, 19, 20, 4, 5, 16, ZSTD_lazy2 }, /* level 8 */
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{ 22, 20, 21, 4, 5, 16, ZSTD_lazy2 }, /* level 9 */
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{ 22, 21, 22, 5, 5, 16, ZSTD_lazy2 }, /* level 10 */
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{ 22, 21, 22, 6, 5, 16, ZSTD_lazy2 }, /* level 11 */
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{ 22, 22, 23, 6, 5, 32, ZSTD_lazy2 }, /* level 12 */
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{ 22, 22, 22, 4, 5, 32, ZSTD_btlazy2 }, /* level 13 */
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{ 22, 22, 23, 5, 5, 32, ZSTD_btlazy2 }, /* level 14 */
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{ 22, 23, 23, 6, 5, 32, ZSTD_btlazy2 }, /* level 15 */
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{ 22, 22, 22, 5, 5, 48, ZSTD_btopt }, /* level 16 */
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{ 23, 23, 22, 5, 4, 64, ZSTD_btopt }, /* level 17 */
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{ 23, 23, 22, 6, 3, 64, ZSTD_btultra }, /* level 18 */
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{ 23, 24, 22, 7, 3,256, ZSTD_btultra2}, /* level 19 */
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{ 25, 25, 23, 7, 3,256, ZSTD_btultra2}, /* level 20 */
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{ 26, 26, 24, 7, 3,512, ZSTD_btultra2}, /* level 21 */
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{ 27, 27, 25, 9, 3,999, ZSTD_btultra2}, /* level 22 */
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},
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{ /* for srcSize <= 256 KB */
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/* W, C, H, S, L, T, strat */
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{ 18, 12, 13, 1, 5, 1, ZSTD_fast }, /* base for negative levels */
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{ 18, 13, 14, 1, 6, 0, ZSTD_fast }, /* level 1 */
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{ 18, 14, 14, 1, 5, 0, ZSTD_dfast }, /* level 2 */
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{ 18, 16, 16, 1, 4, 0, ZSTD_dfast }, /* level 3 */
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{ 18, 16, 17, 3, 5, 2, ZSTD_greedy }, /* level 4.*/
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{ 18, 17, 18, 5, 5, 2, ZSTD_greedy }, /* level 5.*/
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{ 18, 18, 19, 3, 5, 4, ZSTD_lazy }, /* level 6.*/
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{ 18, 18, 19, 4, 4, 4, ZSTD_lazy }, /* level 7 */
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{ 18, 18, 19, 4, 4, 8, ZSTD_lazy2 }, /* level 8 */
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{ 18, 18, 19, 5, 4, 8, ZSTD_lazy2 }, /* level 9 */
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{ 18, 18, 19, 6, 4, 8, ZSTD_lazy2 }, /* level 10 */
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{ 18, 18, 19, 5, 4, 12, ZSTD_btlazy2 }, /* level 11.*/
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{ 18, 19, 19, 7, 4, 12, ZSTD_btlazy2 }, /* level 12.*/
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{ 18, 18, 19, 4, 4, 16, ZSTD_btopt }, /* level 13 */
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{ 18, 18, 19, 4, 3, 32, ZSTD_btopt }, /* level 14.*/
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{ 18, 18, 19, 6, 3,128, ZSTD_btopt }, /* level 15.*/
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{ 18, 19, 19, 6, 3,128, ZSTD_btultra }, /* level 16.*/
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{ 18, 19, 19, 8, 3,256, ZSTD_btultra }, /* level 17.*/
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{ 18, 19, 19, 6, 3,128, ZSTD_btultra2}, /* level 18.*/
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{ 18, 19, 19, 8, 3,256, ZSTD_btultra2}, /* level 19.*/
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{ 18, 19, 19, 10, 3,512, ZSTD_btultra2}, /* level 20.*/
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{ 18, 19, 19, 12, 3,512, ZSTD_btultra2}, /* level 21.*/
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{ 18, 19, 19, 13, 3,999, ZSTD_btultra2}, /* level 22.*/
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},
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{ /* for srcSize <= 128 KB */
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/* W, C, H, S, L, T, strat */
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{ 17, 12, 12, 1, 5, 1, ZSTD_fast }, /* base for negative levels */
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{ 17, 12, 13, 1, 6, 0, ZSTD_fast }, /* level 1 */
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{ 17, 13, 15, 1, 5, 0, ZSTD_fast }, /* level 2 */
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{ 17, 15, 16, 2, 5, 0, ZSTD_dfast }, /* level 3 */
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{ 17, 17, 17, 2, 4, 0, ZSTD_dfast }, /* level 4 */
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{ 17, 16, 17, 3, 4, 2, ZSTD_greedy }, /* level 5 */
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{ 17, 16, 17, 3, 4, 4, ZSTD_lazy }, /* level 6 */
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{ 17, 16, 17, 3, 4, 8, ZSTD_lazy2 }, /* level 7 */
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{ 17, 16, 17, 4, 4, 8, ZSTD_lazy2 }, /* level 8 */
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{ 17, 16, 17, 5, 4, 8, ZSTD_lazy2 }, /* level 9 */
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{ 17, 16, 17, 6, 4, 8, ZSTD_lazy2 }, /* level 10 */
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{ 17, 17, 17, 5, 4, 8, ZSTD_btlazy2 }, /* level 11 */
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{ 17, 18, 17, 7, 4, 12, ZSTD_btlazy2 }, /* level 12 */
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{ 17, 18, 17, 3, 4, 12, ZSTD_btopt }, /* level 13.*/
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{ 17, 18, 17, 4, 3, 32, ZSTD_btopt }, /* level 14.*/
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{ 17, 18, 17, 6, 3,256, ZSTD_btopt }, /* level 15.*/
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{ 17, 18, 17, 6, 3,128, ZSTD_btultra }, /* level 16.*/
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{ 17, 18, 17, 8, 3,256, ZSTD_btultra }, /* level 17.*/
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{ 17, 18, 17, 10, 3,512, ZSTD_btultra }, /* level 18.*/
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{ 17, 18, 17, 5, 3,256, ZSTD_btultra2}, /* level 19.*/
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{ 17, 18, 17, 7, 3,512, ZSTD_btultra2}, /* level 20.*/
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{ 17, 18, 17, 9, 3,512, ZSTD_btultra2}, /* level 21.*/
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{ 17, 18, 17, 11, 3,999, ZSTD_btultra2}, /* level 22.*/
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},
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{ /* for srcSize <= 16 KB */
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/* W, C, H, S, L, T, strat */
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{ 14, 12, 13, 1, 5, 1, ZSTD_fast }, /* base for negative levels */
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{ 14, 14, 15, 1, 5, 0, ZSTD_fast }, /* level 1 */
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{ 14, 14, 15, 1, 4, 0, ZSTD_fast }, /* level 2 */
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{ 14, 14, 15, 2, 4, 0, ZSTD_dfast }, /* level 3 */
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{ 14, 14, 14, 4, 4, 2, ZSTD_greedy }, /* level 4 */
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{ 14, 14, 14, 3, 4, 4, ZSTD_lazy }, /* level 5.*/
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{ 14, 14, 14, 4, 4, 8, ZSTD_lazy2 }, /* level 6 */
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{ 14, 14, 14, 6, 4, 8, ZSTD_lazy2 }, /* level 7 */
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{ 14, 14, 14, 8, 4, 8, ZSTD_lazy2 }, /* level 8.*/
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{ 14, 15, 14, 5, 4, 8, ZSTD_btlazy2 }, /* level 9.*/
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{ 14, 15, 14, 9, 4, 8, ZSTD_btlazy2 }, /* level 10.*/
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{ 14, 15, 14, 3, 4, 12, ZSTD_btopt }, /* level 11.*/
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{ 14, 15, 14, 4, 3, 24, ZSTD_btopt }, /* level 12.*/
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{ 14, 15, 14, 5, 3, 32, ZSTD_btultra }, /* level 13.*/
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{ 14, 15, 15, 6, 3, 64, ZSTD_btultra }, /* level 14.*/
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{ 14, 15, 15, 7, 3,256, ZSTD_btultra }, /* level 15.*/
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{ 14, 15, 15, 5, 3, 48, ZSTD_btultra2}, /* level 16.*/
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{ 14, 15, 15, 6, 3,128, ZSTD_btultra2}, /* level 17.*/
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{ 14, 15, 15, 7, 3,256, ZSTD_btultra2}, /* level 18.*/
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{ 14, 15, 15, 8, 3,256, ZSTD_btultra2}, /* level 19.*/
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{ 14, 15, 15, 8, 3,512, ZSTD_btultra2}, /* level 20.*/
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{ 14, 15, 15, 9, 3,512, ZSTD_btultra2}, /* level 21.*/
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{ 14, 15, 15, 10, 3,999, ZSTD_btultra2}, /* level 22.*/
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},
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};
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#endif /* ZSTD_CLEVELS_H */
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