Compression
Revision as of 18:46, 21 April 2018 by Uwe Hermann (talk | contribs)
Comparison
All tests were performed using lzbench 1.7.3 (64-bit Linux), default compile options, gcc 7.3.0.
All lzbench runs were performed twice in a row, the second run is recorded here. Only 1 core is used by all algorithms in this test set (though some of them are multi-threading capable).
Hardware: Laptop, AMD A10-8700P (4 cores, 1.8MHz); all 4 cores set to "performance" cpufreq governor; 8GB RAM
All results should be taken with a grain of salt, this is not a very scientific setup; speeds can vary quite a bit with each run as well, and the results can depend on quite a lot of things and will vary for other systems, other data, etc. etc.
100MB /dev/zero
$ dd if=/dev/zero of=devzero_100mb.dd bs=1M count=100 # 104857600 bytes $ ./lzbench -elibdeflate,9,6,1/lz4/lz4fast,9,6,1/zstd,22,9,6,1,-1 devzero_100mb.dd lzbench 1.7.3 (64-bit Linux) Assembled by P.Skibinski Compressor name Compress. Decompress. Compr. size Ratio Filename memcpy 3489 MB/s 3417 MB/s 104857600 100.00 devzero_100mb.dd libdeflate 0.7 -9 37 MB/s 3695 MB/s 105985 0.10 devzero_100mb.dd libdeflate 0.7 -6 285 MB/s 3744 MB/s 105985 0.10 devzero_100mb.dd libdeflate 0.7 -1 286 MB/s 3744 MB/s 105985 0.10 devzero_100mb.dd lz4 1.8.0 5019 MB/s 2605 MB/s 411217 0.39 devzero_100mb.dd lz4fast 1.8.0 -9 4876 MB/s 2609 MB/s 411217 0.39 devzero_100mb.dd lz4fast 1.8.0 -6 4978 MB/s 2742 MB/s 411217 0.39 devzero_100mb.dd lz4fast 1.8.0 -1 4989 MB/s 2637 MB/s 411217 0.39 devzero_100mb.dd zstd 1.3.3 -22 2644 MB/s 2802 MB/s 8810 0.01 devzero_100mb.dd zstd 1.3.3 -9 739 MB/s 2931 MB/s 8812 0.01 devzero_100mb.dd zstd 1.3.3 -6 1342 MB/s 2934 MB/s 8812 0.01 devzero_100mb.dd zstd 1.3.3 -1 4475 MB/s 2504 MB/s 9611 0.01 devzero_100mb.dd zstd 1.3.3 --1 4738 MB/s 2637 MB/s 9611 0.01 devzero_100mb.dd done... (cIters=1 dIters=1 cTime=1.0 dTime=2.0 chunkSize=1706MB cSpeed=0MB)
100MB /dev/urandom
$ dd if=/dev/urandom of=devurandom_100mb.dd bs=1M count=100 # 104857600 bytes $ ./lzbench -elibdeflate,9,6,1/lz4/lz4fast,9,6,1/zstd,22,9,6,1,-1 devurandom_100mb.dd lzbench 1.7.3 (64-bit Linux) Assembled by P.Skibinski Compressor name Compress. Decompress. Compr. size Ratio Filename memcpy 3425 MB/s 3443 MB/s 104857600 100.00 devurandom_100mb.dd libdeflate 0.7 -9 23 MB/s 2143 MB/s 104866340 100.01 devurandom_100mb.dd libdeflate 0.7 -6 53 MB/s 2144 MB/s 104866340 100.01 devurandom_100mb.dd libdeflate 0.7 -1 54 MB/s 2134 MB/s 104866340 100.01 devurandom_100mb.dd lz4 1.8.0 2937 MB/s 3160 MB/s 105268808 100.39 devurandom_100mb.dd lz4fast 1.8.0 -9 2933 MB/s 3169 MB/s 105268808 100.39 devurandom_100mb.dd lz4fast 1.8.0 -6 2942 MB/s 3145 MB/s 105268808 100.39 devurandom_100mb.dd lz4fast 1.8.0 -1 2940 MB/s 3138 MB/s 105268808 100.39 devurandom_100mb.dd zstd 1.3.3 -22 1.87 MB/s 1737 MB/s 104860009 100.00 devurandom_100mb.dd zstd 1.3.3 -9 40 MB/s 1722 MB/s 104860010 100.00 devurandom_100mb.dd zstd 1.3.3 -6 48 MB/s 1721 MB/s 104860010 100.00 devurandom_100mb.dd zstd 1.3.3 -1 730 MB/s 1673 MB/s 104860010 100.00 devurandom_100mb.dd zstd 1.3.3 --1 531 MB/s 1719 MB/s 104860010 100.00 devurandom_100mb.dd done... (cIters=1 dIters=1 cTime=1.0 dTime=2.0 chunkSize=1706MB cSpeed=0MB)
1000MB /dev/zero
$ dd if=/dev/zero of=devzero_1000mb.dd bs=1M count=1000 # 1048576000 bytes $ ./lzbench -elibdeflate,9,6,1/lz4/lz4fast,9,6,1/zstd,22,9,6,1,-1 devzero_1000mb.dd lzbench 1.7.3 (64-bit Linux) Assembled by P.Skibinski Compressor name Compress. Decompress. Compr. size Ratio Filename memcpy 3073 MB/s 2969 MB/s 1048576000 100.00 devzero_1000mb.dd libdeflate 0.7 -9 36 MB/s 3390 MB/s 1059753 0.10 devzero_1000mb.dd libdeflate 0.7 -6 272 MB/s 3421 MB/s 1059753 0.10 devzero_1000mb.dd libdeflate 0.7 -1 262 MB/s 3583 MB/s 1059753 0.10 devzero_1000mb.dd lz4 1.8.0 4567 MB/s 2249 MB/s 4112073 0.39 devzero_1000mb.dd lz4fast 1.8.0 -9 4344 MB/s 2355 MB/s 4112073 0.39 devzero_1000mb.dd lz4fast 1.8.0 -6 4399 MB/s 2338 MB/s 4112073 0.39 devzero_1000mb.dd lz4fast 1.8.0 -1 4478 MB/s 2027 MB/s 4112073 0.39 devzero_1000mb.dd zstd 1.3.3 -22 1636 MB/s 2452 MB/s 88011 0.01 devzero_1000mb.dd zstd 1.3.3 -9 647 MB/s 2635 MB/s 88012 0.01 devzero_1000mb.dd zstd 1.3.3 -6 1128 MB/s 3076 MB/s 88012 0.01 devzero_1000mb.dd zstd 1.3.3 -1 4388 MB/s 2534 MB/s 96011 0.01 devzero_1000mb.dd zstd 1.3.3 --1 4594 MB/s 2479 MB/s 96011 0.01 devzero_1000mb.dd done... (cIters=1 dIters=1 cTime=1.0 dTime=2.0 chunkSize=1706MB cSpeed=0MB)
1000MB /dev/urandom
$ dd if=/dev/urandom of=devurandom_1000mb.dd bs=1M count=1000 # 1048576000 bytes $ ./lzbench -elibdeflate,9,6,1/lz4/lz4fast,9,6,1/zstd,22,9,6,1,-1 devurandom_1000mb.dd lzbench 1.7.3 (64-bit Linux) Assembled by P.Skibinski Compressor name Compress. Decompress. Compr. size Ratio Filename memcpy 2525 MB/s 3364 MB/s 1048576000 100.00 devurandom_1000mb.dd libdeflate 0.7 -9 22 MB/s 2043 MB/s 1048663385 100.01 devurandom_1000mb.dd libdeflate 0.7 -6 51 MB/s 2109 MB/s 1048663385 100.01 devurandom_1000mb.dd libdeflate 0.7 -1 52 MB/s 2053 MB/s 1048663385 100.01 devurandom_1000mb.dd lz4 1.8.0 3222 MB/s 3176 MB/s 1052688064 100.39 devurandom_1000mb.dd lz4fast 1.8.0 -9 3293 MB/s 3265 MB/s 1052688064 100.39 devurandom_1000mb.dd lz4fast 1.8.0 -6 3362 MB/s 3276 MB/s 1052688064 100.39 devurandom_1000mb.dd lz4fast 1.8.0 -1 3292 MB/s 3251 MB/s 1052688064 100.39 devurandom_1000mb.dd zstd 1.3.3 -22 1.32 MB/s 1728 MB/s 1048600010 100.00 devurandom_1000mb.dd zstd 1.3.3 -9 42 MB/s 1779 MB/s 1048600010 100.00 devurandom_1000mb.dd zstd 1.3.3 -6 50 MB/s 1705 MB/s 1048600010 100.00 devurandom_1000mb.dd zstd 1.3.3 -1 719 MB/s 1663 MB/s 1048600010 100.00 devurandom_1000mb.dd zstd 1.3.3 --1 531 MB/s 1722 MB/s 1048600010 100.00 devurandom_1000mb.dd done... (cIters=1 dIters=1 cTime=1.0 dTime=2.0 chunkSize=1706MB cSpeed=0MB)
dcf77_1800s.sr
$ unzip dcf77_1800s.sr; ls -l logic-1 # 1800000000 bytes $ ./lzbench -elibdeflate,9,6,1/lz4/lz4fast,9,6,1/zstd,22,9,6,1,-1 logic-1 lzbench 1.7.3 (64-bit Linux) Assembled by P.Skibinski Compressor name Compress. Decompress. Compr. size Ratio Filename memcpy 3950 MB/s 3406 MB/s 1800000000 100.00 logic-1 libdeflate 0.7 -9 37 MB/s 3598 MB/s 1834228 0.10 logic-1 libdeflate 0.7 -6 280 MB/s 3579 MB/s 1834219 0.10 logic-1 libdeflate 0.7 -1 278 MB/s 3629 MB/s 1835503 0.10 logic-1 lz4 1.8.0 5501 MB/s 2446 MB/s 7078762 0.39 logic-1 lz4fast 1.8.0 -9 5497 MB/s 2427 MB/s 7078762 0.39 logic-1 lz4fast 1.8.0 -6 5500 MB/s 2427 MB/s 7078762 0.39 logic-1 lz4fast 1.8.0 -1 5477 MB/s 2431 MB/s 7078762 0.39 logic-1 zstd 1.3.3 -22 88 MB/s 2714 MB/s 176064 0.01 logic-1 zstd 1.3.3 -9 609 MB/s 2681 MB/s 171800 0.01 logic-1 zstd 1.3.3 -6 1003 MB/s 2691 MB/s 171800 0.01 logic-1 zstd 1.3.3 -1 5182 MB/s 2480 MB/s 181782 0.01 logic-1 zstd 1.3.3 --1 5221 MB/s 2466 MB/s 181782 0.01 logic-1 done... (cIters=1 dIters=1 cTime=1.0 dTime=2.0 chunkSize=1706MB cSpeed=0MB)
voltcraft_vc940_multiple_modes.sr
$ unzip voltcraft_vc940_multiple_modes.sr; cat logic-1-* >> all.dd # 77332480 bytes $ ./lzbench -elibdeflate,9,6,1/lz4/lz4fast,9,6,1/zstd,22,9,6,1,-1 all.dd lzbench 1.7.3 (64-bit Linux) Assembled by P.Skibinski Compressor name Compress. Decompress. Compr. size Ratio Filename memcpy 4115 MB/s 2026 MB/s 77332480 100.00 all.dd libdeflate 0.7 -9 37 MB/s 903 MB/s 129536 0.17 all.dd libdeflate 0.7 -6 297 MB/s 905 MB/s 119007 0.15 all.dd libdeflate 0.7 -1 292 MB/s 885 MB/s 144513 0.19 all.dd lz4 1.8.0 5412 MB/s 2822 MB/s 383852 0.50 all.dd lz4fast 1.8.0 -9 5448 MB/s 2822 MB/s 385484 0.50 all.dd lz4fast 1.8.0 -6 5410 MB/s 2814 MB/s 392402 0.51 all.dd lz4fast 1.8.0 -1 5456 MB/s 2781 MB/s 383852 0.50 all.dd zstd 1.3.3 -22 40 MB/s 2968 MB/s 33746 0.04 all.dd zstd 1.3.3 -9 526 MB/s 2841 MB/s 53791 0.07 all.dd zstd 1.3.3 -6 769 MB/s 2744 MB/s 55157 0.07 all.dd zstd 1.3.3 -1 4629 MB/s 2634 MB/s 59539 0.08 all.dd zstd 1.3.3 --1 4646 MB/s 2665 MB/s 59820 0.08 all.dd done... (cIters=1 dIters=1 cTime=1.0 dTime=2.0 chunkSize=1706MB cSpeed=0MB)
1mhz_clock_1channels.sr
$ unzip 1mhz_clock_1channels.sr; ls -l logic-1 # 12000000 bytes $ ./lzbench -elibdeflate,9,6,1/lz4/lz4fast,9,6,1/zstd,22,9,6,1,-1 logic-1 lzbench 1.7.3 (64-bit Linux) Assembled by P.Skibinski Compressor name Compress. Decompress. Compr. size Ratio Filename memcpy 4181 MB/s 4092 MB/s 12000000 100.00 logic-1 libdeflate 0.7 -9 26 MB/s 1114 MB/s 49683 0.41 logic-1 libdeflate 0.7 -6 262 MB/s 1099 MB/s 45359 0.38 logic-1 libdeflate 0.7 -1 303 MB/s 1053 MB/s 59641 0.50 logic-1 lz4 1.8.0 4810 MB/s 1320 MB/s 123130 1.03 logic-1 lz4fast 1.8.0 -9 4798 MB/s 1320 MB/s 123153 1.03 logic-1 lz4fast 1.8.0 -6 4822 MB/s 1321 MB/s 123128 1.03 logic-1 lz4fast 1.8.0 -1 4794 MB/s 1319 MB/s 123130 1.03 logic-1 zstd 1.3.3 -22 15 MB/s 3455 MB/s 24274 0.20 logic-1 zstd 1.3.3 -9 333 MB/s 1077 MB/s 26819 0.22 logic-1 zstd 1.3.3 -6 402 MB/s 1054 MB/s 23712 0.20 logic-1 zstd 1.3.3 -1 3249 MB/s 936 MB/s 21864 0.18 logic-1 zstd 1.3.3 --1 3129 MB/s 959 MB/s 21864 0.18 logic-1 done... (cIters=1 dIters=1 cTime=1.0 dTime=2.0 chunkSize=1706MB cSpeed=0MB)
1mhz_clock_8channels.sr
$ unzip 1mhz_clock_8channels.sr; ls -l logic-1 # 12032000 bytes $ ./lzbench -elibdeflate,9,6,1/lz4/lz4fast,9,6,1/zstd,22,9,6,1,-1 logic-1 lzbench 1.7.3 (64-bit Linux) Assembled by P.Skibinski Compressor name Compress. Decompress. Compr. size Ratio Filename memcpy 4207 MB/s 4221 MB/s 12032000 100.00 logic-1 libdeflate 0.7 -9 25 MB/s 1109 MB/s 49766 0.41 logic-1 libdeflate 0.7 -6 297 MB/s 1090 MB/s 45485 0.38 logic-1 libdeflate 0.7 -1 303 MB/s 1046 MB/s 59739 0.50 logic-1 lz4 1.8.0 4898 MB/s 1350 MB/s 123499 1.03 logic-1 lz4fast 1.8.0 -9 4855 MB/s 1349 MB/s 123519 1.03 logic-1 lz4fast 1.8.0 -6 4838 MB/s 1350 MB/s 123494 1.03 logic-1 lz4fast 1.8.0 -1 4929 MB/s 1349 MB/s 123499 1.03 logic-1 zstd 1.3.3 -22 14 MB/s 3366 MB/s 23990 0.20 logic-1 zstd 1.3.3 -9 325 MB/s 1065 MB/s 26808 0.22 logic-1 zstd 1.3.3 -6 398 MB/s 1053 MB/s 23651 0.20 logic-1 zstd 1.3.3 -1 3248 MB/s 957 MB/s 19589 0.16 logic-1 zstd 1.3.3 --1 3140 MB/s 953 MB/s 19589 0.16 logic-1 done... (cIters=1 dIters=1 cTime=1.0 dTime=2.0 chunkSize=1706MB cSpeed=0MB)
1mhz_clock_16channels.sr
$ unzip 1mhz_clock_16channels.sr; ls -l logic-1 # 24064000 bytes $ ./lzbench -elibdeflate,9,6,1/lz4/lz4fast,9,6,1/zstd,22,9,6,1,-1 logic-1 lzbench 1.7.3 (64-bit Linux) Assembled by P.Skibinski Compressor name Compress. Decompress. Compr. size Ratio Filename memcpy 4364 MB/s 4390 MB/s 24064000 100.00 logic-1 libdeflate 0.7 -9 18 MB/s 3633 MB/s 91248 0.38 logic-1 libdeflate 0.7 -6 295 MB/s 3696 MB/s 84348 0.35 logic-1 libdeflate 0.7 -1 132 MB/s 423 MB/s 2020118 8.39 logic-1 lz4 1.8.0 5275 MB/s 3825 MB/s 203557 0.85 logic-1 lz4fast 1.8.0 -9 5124 MB/s 3825 MB/s 203557 0.85 logic-1 lz4fast 1.8.0 -6 5278 MB/s 3894 MB/s 203557 0.85 logic-1 lz4fast 1.8.0 -1 5695 MB/s 3873 MB/s 203557 0.85 logic-1 zstd 1.3.3 -22 32 MB/s 3380 MB/s 30202 0.13 logic-1 zstd 1.3.3 -9 396 MB/s 3704 MB/s 36192 0.15 logic-1 zstd 1.3.3 -6 505 MB/s 3677 MB/s 34735 0.14 logic-1 zstd 1.3.3 -1 2914 MB/s 2652 MB/s 47498 0.20 logic-1 zstd 1.3.3 --1 2818 MB/s 2693 MB/s 43389 0.18 logic-1 done... (cIters=1 dIters=1 cTime=1.0 dTime=2.0 chunkSize=1706MB cSpeed=0MB)
lpc_vultureprog.sr
$ unzip lpc_vultureprog.sr; ls -l logic-1 # 23552000 bytes $ ./lzbench -elibdeflate,9,6,1/lz4/lz4fast,9,6,1/zstd,22,9,6,1,-1 logic-1 lzbench 1.7.3 (64-bit Linux) Assembled by P.Skibinski Compressor name Compress. Decompress. Compr. size Ratio Filename memcpy 4363 MB/s 4432 MB/s 23552000 100.00 logic-1 libdeflate 0.7 -9 24 MB/s 3381 MB/s 240235 1.02 logic-1 libdeflate 0.7 -6 256 MB/s 3393 MB/s 227781 0.97 logic-1 libdeflate 0.7 -1 263 MB/s 2310 MB/s 552669 2.35 logic-1 lz4 1.8.0 3223 MB/s 2555 MB/s 660503 2.80 logic-1 lz4fast 1.8.0 -9 3291 MB/s 2535 MB/s 647529 2.75 logic-1 lz4fast 1.8.0 -6 3281 MB/s 2542 MB/s 646091 2.74 logic-1 lz4fast 1.8.0 -1 3121 MB/s 2486 MB/s 660503 2.80 logic-1 zstd 1.3.3 -22 16 MB/s 2626 MB/s 59609 0.25 logic-1 zstd 1.3.3 -9 403 MB/s 2749 MB/s 95312 0.40 logic-1 zstd 1.3.3 -6 585 MB/s 2596 MB/s 122625 0.52 logic-1 zstd 1.3.3 -1 2600 MB/s 2441 MB/s 170792 0.73 logic-1 zstd 1.3.3 --1 2174 MB/s 2354 MB/s 164431 0.70 logic-1 done... (cIters=1 dIters=1 cTime=1.0 dTime=2.0 chunkSize=1706MB cSpeed=0MB)
mx25l1605d_read.sr
$ unzip mx25l1605d_read.sr; ls -l logic-1 # 8388608 bytes $ ./lzbench -elibdeflate,9,6,1/lz4/lz4fast,9,6,1/zstd,22,9,6,1,-1 logic-1 lzbench 1.7.3 (64-bit Linux) Assembled by P.Skibinski Compressor name Compress. Decompress. Compr. size Ratio Filename memcpy 4384 MB/s 4540 MB/s 8388608 100.00 logic-1 libdeflate 0.7 -9 27 MB/s 3395 MB/s 61433 0.73 logic-1 libdeflate 0.7 -6 270 MB/s 3441 MB/s 64317 0.77 logic-1 libdeflate 0.7 -1 258 MB/s 2228 MB/s 188381 2.25 logic-1 lz4 1.8.0 3828 MB/s 2655 MB/s 195039 2.33 logic-1 lz4fast 1.8.0 -9 3763 MB/s 2665 MB/s 199313 2.38 logic-1 lz4fast 1.8.0 -6 3825 MB/s 2639 MB/s 196225 2.34 logic-1 lz4fast 1.8.0 -1 3805 MB/s 2648 MB/s 195039 2.33 logic-1 zstd 1.3.3 -22 14 MB/s 2789 MB/s 11169 0.13 logic-1 zstd 1.3.3 -9 354 MB/s 2539 MB/s 29976 0.36 logic-1 zstd 1.3.3 -6 445 MB/s 2424 MB/s 41797 0.50 logic-1 zstd 1.3.3 -1 3030 MB/s 2435 MB/s 44133 0.53 logic-1 zstd 1.3.3 --1 2828 MB/s 2482 MB/s 38700 0.46 logic-1 done... (cIters=1 dIters=1 cTime=1.0 dTime=2.0 chunkSize=1706MB cSpeed=0MB)
sainsmart_dds120_powerup_scl_sda_analog.sr, 1 analog channel
$ unzip sainsmart_dds120_powerup_scl_sda_analog.sr; cat analog-1-1-* > all_ch1.dd # 200000000 bytes $ ./lzbench -elibdeflate,9,6,1/lz4/lz4fast,9,6,1/zstd,22,9,6,1,-1 all_ch1.dd lzbench 1.7.3 (64-bit Linux) Assembled by P.Skibinski Compressor name Compress. Decompress. Compr. size Ratio Filename memcpy 4034 MB/s 4011 MB/s 200000000 100.00 all_ch1.dd libdeflate 0.7 -9 13 MB/s 1230 MB/s 8494341 4.25 all_ch1.dd libdeflate 0.7 -6 92 MB/s 1386 MB/s 8901864 4.45 all_ch1.dd libdeflate 0.7 -1 195 MB/s 689 MB/s 11426059 5.71 all_ch1.dd lz4 1.8.0 1045 MB/s 1505 MB/s 28803992 14.40 all_ch1.dd lz4fast 1.8.0 -9 1051 MB/s 1469 MB/s 28978585 14.49 all_ch1.dd lz4fast 1.8.0 -6 1043 MB/s 1470 MB/s 28873753 14.44 all_ch1.dd lz4fast 1.8.0 -1 1050 MB/s 1506 MB/s 28803992 14.40 all_ch1.dd zstd 1.3.3 -22 1.47 MB/s 1670 MB/s 6282310 3.14 all_ch1.dd zstd 1.3.3 -9 86 MB/s 844 MB/s 9178284 4.59 all_ch1.dd zstd 1.3.3 -6 141 MB/s 777 MB/s 9587374 4.79 all_ch1.dd zstd 1.3.3 -1 426 MB/s 633 MB/s 11106610 5.55 all_ch1.dd zstd 1.3.3 --1 409 MB/s 639 MB/s 11095196 5.55 all_ch1.dd done... (cIters=1 dIters=1 cTime=1.0 dTime=2.0 chunkSize=1706MB cSpeed=0MB)
sainsmart_dds120_powerup_scl_sda_analog.sr, 2 analog channels
$ unzip sainsmart_dds120_powerup_scl_sda_analog.sr; cat analog-1-* > all_ch12.dd # 400000000 bytes $ ./lzbench -elibdeflate,9,6,1/lz4/lz4fast,9,6,1/zstd,22,9,6,1,-1 all_ch12.dd lzbench 1.7.3 (64-bit Linux) Assembled by P.Skibinski Compressor name Compress. Decompress. Compr. size Ratio Filename memcpy 4011 MB/s 4021 MB/s 400000000 100.00 all_ch12.dd libdeflate 0.7 -9 16 MB/s 1118 MB/s 11169794 2.79 all_ch12.dd libdeflate 0.7 -6 121 MB/s 1189 MB/s 11690852 2.92 all_ch12.dd libdeflate 0.7 -1 218 MB/s 767 MB/s 14643158 3.66 all_ch12.dd lz4 1.8.0 1449 MB/s 1883 MB/s 36580151 9.15 all_ch12.dd lz4fast 1.8.0 -9 1450 MB/s 1865 MB/s 36854916 9.21 all_ch12.dd lz4fast 1.8.0 -6 1461 MB/s 1875 MB/s 36692554 9.17 all_ch12.dd lz4fast 1.8.0 -1 1449 MB/s 1889 MB/s 36580151 9.15 all_ch12.dd zstd 1.3.3 -22 2.16 MB/s 1948 MB/s 8327371 2.08 all_ch12.dd zstd 1.3.3 -9 117 MB/s 1181 MB/s 11854470 2.96 all_ch12.dd zstd 1.3.3 -6 186 MB/s 1099 MB/s 12376509 3.09 all_ch12.dd zstd 1.3.3 -1 655 MB/s 927 MB/s 14313847 3.58 all_ch12.dd zstd 1.3.3 --1 616 MB/s 925 MB/s 14293042 3.57 all_ch12.dd done... (cIters=1 dIters=1 cTime=1.0 dTime=2.0 chunkSize=1706MB cSpeed=0MB)