Compression

Comparison

All tests were performed using lzbench 1.7.3 (64-bit Linux), default compile options, gcc 7.3.0. zstd was manually updated from 1.3.3 to 1.3.4 by copying the lib/ directory (might not take advantage of all improvements in zstd 1.3.4).

All lzbench runs were performed with -i10,10 -p3 (compress 10 times, decompress 10 times, record median). 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 -i10,10 -p3 -elibdeflate,3,1/lz4/lz4fast,3,1/zstd,3,1,-20/zstdLDM,3,1,-20 devzero_100mb.dd
lzbench 1.7.3 (64-bit Linux)   Assembled by P.Skibinski
Compressor name         Compress. Decompress. Compr. size  Ratio Filename
memcpy                   4330 MB/s  4466 MB/s   104857600 100.00 devzero_100mb.dd
libdeflate 0.7 -3         266 MB/s  3451 MB/s      105985   0.10 devzero_100mb.dd
libdeflate 0.7 -1         276 MB/s  3511 MB/s      105985   0.10 devzero_100mb.dd
lz4 1.8.0                5054 MB/s  2095 MB/s      411217   0.39 devzero_100mb.dd
lz4fast 1.8.0 -3         5125 MB/s  2073 MB/s      411217   0.39 devzero_100mb.dd
lz4fast 1.8.0 -1         5059 MB/s  2268 MB/s      411217   0.39 devzero_100mb.dd
zstd 1.3.4 -3            4986 MB/s  2449 MB/s        9611   0.01 devzero_100mb.dd
zstd 1.3.4 -1            4652 MB/s  2093 MB/s        9611   0.01 devzero_100mb.dd
zstd 1.3.4 --20          4910 MB/s  2161 MB/s        9611   0.01 devzero_100mb.dd
zstdLDM 1.3.4 -3         5138 MB/s  2405 MB/s        9611   0.01 devzero_100mb.dd
zstdLDM 1.3.4 -1         5074 MB/s  2439 MB/s        9611   0.01 devzero_100mb.dd
zstdLDM 1.3.4 --20       5107 MB/s  2447 MB/s        9611   0.01 devzero_100mb.dd
done... (cIters=10 dIters=10 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 -i10,10 -p3 -elibdeflate,3,1/lz4/lz4fast,3,1/zstd,3,1,-20/zstdLDM,3,1,-20 devurandom_100mb.dd
lzbench 1.7.3 (64-bit Linux)   Assembled by P.Skibinski
Compressor name         Compress. Decompress. Compr. size  Ratio Filename
memcpy                   4318 MB/s  4318 MB/s   104857600 100.00 devurandom_100mb.dd
libdeflate 0.7 -3          54 MB/s  2022 MB/s   104866340 100.01 devurandom_100mb.dd
libdeflate 0.7 -1          56 MB/s  2066 MB/s   104866340 100.01 devurandom_100mb.dd
lz4 1.8.0                3549 MB/s  3756 MB/s   105268808 100.39 devurandom_100mb.dd
lz4fast 1.8.0 -3         3542 MB/s  3756 MB/s   105268808 100.39 devurandom_100mb.dd
lz4fast 1.8.0 -1         3552 MB/s  3756 MB/s   105268808 100.39 devurandom_100mb.dd
zstd 1.3.4 -3             541 MB/s  1559 MB/s   104860010 100.00 devurandom_100mb.dd
zstd 1.3.4 -1             733 MB/s  1544 MB/s   104860010 100.00 devurandom_100mb.dd
zstd 1.3.4 --20           773 MB/s  1547 MB/s   104860010 100.00 devurandom_100mb.dd
zstdLDM 1.3.4 -3          546 MB/s  1543 MB/s   104860010 100.00 devurandom_100mb.dd
zstdLDM 1.3.4 -1          742 MB/s  1557 MB/s   104860010 100.00 devurandom_100mb.dd
zstdLDM 1.3.4 --20        768 MB/s  1539 MB/s   104860010 100.00 devurandom_100mb.dd
done... (cIters=10 dIters=10 cTime=1.0 dTime=2.0 chunkSize=1706MB cSpeed=0MB)

dcf77_1800s.sr

$ unzip dcf77_1800s.sr; ls -l logic-1 # 1800000000 bytes
$ ./lzbench -i10,10 -p3 -elibdeflate,3,1/lz4/lz4fast,3,1/zstd,3,1,-20/zstdLDM,3,1,-20 logic-1
lzbench 1.7.3 (64-bit Linux)   Assembled by P.Skibinski
Compressor name         Compress. Decompress. Compr. size  Ratio Filename
memcpy                   3838 MB/s  3331 MB/s  1800000000 100.00 logic-1
libdeflate 0.7 -3         279 MB/s  3493 MB/s     1835580   0.10 logic-1
libdeflate 0.7 -1         273 MB/s  3552 MB/s     1835503   0.10 logic-1
lz4 1.8.0                5274 MB/s  2022 MB/s     7078762   0.39 logic-1
lz4fast 1.8.0 -3         5273 MB/s  2009 MB/s     7078762   0.39 logic-1
lz4fast 1.8.0 -1         5236 MB/s  2007 MB/s     7078762   0.39 logic-1
zstd 1.3.4 -3            4995 MB/s  2062 MB/s      181782   0.01 logic-1
zstd 1.3.4 -1            4867 MB/s  2064 MB/s      181782   0.01 logic-1
zstd 1.3.4 --20          4950 MB/s  2063 MB/s      181782   0.01 logic-1
zstdLDM 1.3.4 -3         5002 MB/s  2061 MB/s      181782   0.01 logic-1
zstdLDM 1.3.4 -1         4885 MB/s  2060 MB/s      181782   0.01 logic-1
zstdLDM 1.3.4 --20       4953 MB/s  2063 MB/s      181782   0.01 logic-1
done... (cIters=10 dIters=10 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 -i10,10 -p3 -elibdeflate,3,1/lz4/lz4fast,3,1/zstd,3,1,-20/zstdLDM,3,1,-20 all.dd
lzbench 1.7.3 (64-bit Linux)   Assembled by P.Skibinski
Compressor name         Compress. Decompress. Compr. size  Ratio Filename
memcpy                   4284 MB/s  4128 MB/s    77332480 100.00 all.dd
libdeflate 0.7 -3         284 MB/s   835 MB/s      145977   0.19 all.dd
libdeflate 0.7 -1         279 MB/s   871 MB/s      144513   0.19 all.dd
lz4 1.8.0                5265 MB/s  2623 MB/s      383852   0.50 all.dd
lz4fast 1.8.0 -3         5288 MB/s  2593 MB/s      384377   0.50 all.dd
lz4fast 1.8.0 -1         5311 MB/s  2627 MB/s      383852   0.50 all.dd
zstd 1.3.4 -3            4521 MB/s  2574 MB/s       59820   0.08 all.dd
zstd 1.3.4 -1            4391 MB/s  2575 MB/s       59539   0.08 all.dd
zstd 1.3.4 --20          4422 MB/s  2599 MB/s       62567   0.08 all.dd
zstdLDM 1.3.4 -3         2931 MB/s  2606 MB/s       59820   0.08 all.dd
zstdLDM 1.3.4 -1         4485 MB/s  2485 MB/s       59539   0.08 all.dd
zstdLDM 1.3.4 --20       4399 MB/s  2582 MB/s       62567   0.08 all.dd
done... (cIters=10 dIters=10 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 -i10,10 -p3 -elibdeflate,3,1/lz4/lz4fast,3,1/zstd,3,1,-20/zstdLDM,3,1,-20 logic-1
lzbench 1.7.3 (64-bit Linux)   Assembled by P.Skibinski
Compressor name         Compress. Decompress. Compr. size  Ratio Filename
memcpy                   2008 MB/s  4344 MB/s    12000000 100.00 logic-1
libdeflate 0.7 -3         280 MB/s   771 MB/s       53189   0.44 logic-1
libdeflate 0.7 -1         239 MB/s   799 MB/s       59641   0.50 logic-1
lz4 1.8.0                4526 MB/s   972 MB/s      123130   1.03 logic-1
lz4fast 1.8.0 -3         3967 MB/s   945 MB/s      123128   1.03 logic-1
lz4fast 1.8.0 -1         4486 MB/s   942 MB/s      123130   1.03 logic-1
zstd 1.3.4 -3            2707 MB/s   868 MB/s       21864   0.18 logic-1
zstd 1.3.4 -1            2807 MB/s   803 MB/s       21864   0.18 logic-1
zstd 1.3.4 --20          3123 MB/s   804 MB/s       19639   0.16 logic-1
zstdLDM 1.3.4 -3         2767 MB/s   837 MB/s       21864   0.18 logic-1
zstdLDM 1.3.4 -1         2992 MB/s   801 MB/s       21864   0.18 logic-1
zstdLDM 1.3.4 --20       3102 MB/s   933 MB/s       19639   0.16 logic-1
done... (cIters=10 dIters=10 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 -i10,10 -p3 -elibdeflate,3,1/lz4/lz4fast,3,1/zstd,3,1,-20/zstdLDM,3,1,-20 logic-1
lzbench 1.7.3 (64-bit Linux)   Assembled by P.Skibinski
Compressor name         Compress. Decompress. Compr. size  Ratio Filename
memcpy                   2006 MB/s  2239 MB/s    12032000 100.00 logic-1
libdeflate 0.7 -3         277 MB/s   772 MB/s       53257   0.44 logic-1
libdeflate 0.7 -1         263 MB/s   917 MB/s       59739   0.50 logic-1
lz4 1.8.0                4637 MB/s   973 MB/s      123499   1.03 logic-1
lz4fast 1.8.0 -3         4695 MB/s   977 MB/s      123494   1.03 logic-1
lz4fast 1.8.0 -1         4679 MB/s   975 MB/s      123499   1.03 logic-1
zstd 1.3.4 -3            3020 MB/s   806 MB/s       19589   0.16 logic-1
zstd 1.3.4 -1            2349 MB/s   807 MB/s       19589   0.16 logic-1
zstd 1.3.4 --20          2983 MB/s   805 MB/s       19595   0.16 logic-1
zstdLDM 1.3.4 -3         2985 MB/s   803 MB/s       19589   0.16 logic-1
zstdLDM 1.3.4 -1         2807 MB/s   807 MB/s       19589   0.16 logic-1
zstdLDM 1.3.4 --20       3047 MB/s   958 MB/s       19595   0.16 logic-1
done... (cIters=10 dIters=10 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 -i10,10 -p3 -elibdeflate,3,1/lz4/lz4fast,3,1/zstd,3,1,-20/zstdLDM,3,1,-20 logic-1
lzbench 1.7.3 (64-bit Linux)   Assembled by P.Skibinski
Compressor name         Compress. Decompress. Compr. size  Ratio Filename
memcpy                   4166 MB/s  2025 MB/s    24064000 100.00 logic-1
libdeflate 0.7 -3         293 MB/s  3257 MB/s       97695   0.41 logic-1
libdeflate 0.7 -1         126 MB/s   405 MB/s     2020118   8.39 logic-1
lz4 1.8.0                4801 MB/s  3509 MB/s      203557   0.85 logic-1
lz4fast 1.8.0 -3         4944 MB/s  3515 MB/s      203557   0.85 logic-1
lz4fast 1.8.0 -1         5004 MB/s  3556 MB/s      203557   0.85 logic-1
zstd 1.3.4 -3            2693 MB/s  2618 MB/s       43389   0.18 logic-1
zstd 1.3.4 -1            2826 MB/s  2589 MB/s       47498   0.20 logic-1
zstd 1.3.4 --20          2084 MB/s  2536 MB/s       70917   0.29 logic-1
zstdLDM 1.3.4 -3         2677 MB/s  2617 MB/s       43389   0.18 logic-1
zstdLDM 1.3.4 -1         2873 MB/s  2579 MB/s       47498   0.20 logic-1
zstdLDM 1.3.4 --20       2020 MB/s  2520 MB/s       70917   0.29 logic-1
done... (cIters=10 dIters=10 cTime=1.0 dTime=2.0 chunkSize=1706MB cSpeed=0MB)

lpc_vultureprog.sr

$ unzip lpc_vultureprog.sr; ls -l logic-1 # 23552000 bytes
$ ./lzbench -i10,10 -p3 -elibdeflate,3,1/lz4/lz4fast,3,1/zstd,3,1,-20/zstdLDM,3,1,-20 logic-1
lzbench 1.7.3 (64-bit Linux)   Assembled by P.Skibinski
Compressor name         Compress. Decompress. Compr. size  Ratio Filename
memcpy                   2006 MB/s  2211 MB/s    23552000 100.00 logic-1
libdeflate 0.7 -3         255 MB/s  2427 MB/s      388700   1.65 logic-1
libdeflate 0.7 -1         253 MB/s  2019 MB/s      552669   2.35 logic-1
lz4 1.8.0                2827 MB/s  2265 MB/s      660503   2.80 logic-1
lz4fast 1.8.0 -3         3021 MB/s  2323 MB/s      655413   2.78 logic-1
lz4fast 1.8.0 -1         3048 MB/s  2287 MB/s      660503   2.80 logic-1
zstd 1.3.4 -3            2100 MB/s  2213 MB/s      164431   0.70 logic-1
zstd 1.3.4 -1            2509 MB/s  2281 MB/s      170792   0.73 logic-1
zstd 1.3.4 --20          2450 MB/s  2206 MB/s      192481   0.82 logic-1
zstdLDM 1.3.4 -3         2070 MB/s  2209 MB/s      164431   0.70 logic-1
zstdLDM 1.3.4 -1         2311 MB/s  2281 MB/s      170792   0.73 logic-1
zstdLDM 1.3.4 --20       2550 MB/s  2249 MB/s      192481   0.82 logic-1
done... (cIters=10 dIters=10 cTime=1.0 dTime=2.0 chunkSize=1706MB cSpeed=0MB)

mx25l1605d_read.sr

$ unzip mx25l1605d_read.sr; ls -l logic-1 # 8388608 bytes
$ ./lzbench -i10,10 -p3 -elibdeflate,3,1/lz4/lz4fast,3,1/zstd,3,1,-20/zstdLDM,3,1,-20 logic-1
lzbench 1.7.3 (64-bit Linux)   Assembled by P.Skibinski
Compressor name         Compress. Decompress. Compr. size  Ratio Filename
memcpy                   1999 MB/s  2020 MB/s     8388608 100.00 logic-1
libdeflate 0.7 -3         267 MB/s  2984 MB/s       97314   1.16 logic-1
libdeflate 0.7 -1         236 MB/s  2019 MB/s      188381   2.25 logic-1
lz4 1.8.0                3356 MB/s  2283 MB/s      195039   2.33 logic-1
lz4fast 1.8.0 -3         3601 MB/s  2312 MB/s      192804   2.30 logic-1
lz4fast 1.8.0 -1         3542 MB/s  2183 MB/s      195039   2.33 logic-1
zstd 1.3.4 -3            2519 MB/s  2331 MB/s       38700   0.46 logic-1
zstd 1.3.4 -1            2774 MB/s  2272 MB/s       44133   0.53 logic-1
zstd 1.3.4 --20          2628 MB/s  2041 MB/s       55479   0.66 logic-1
zstdLDM 1.3.4 -3         2708 MB/s  2334 MB/s       38700   0.46 logic-1
zstdLDM 1.3.4 -1         2781 MB/s  2275 MB/s       44133   0.53 logic-1
zstdLDM 1.3.4 --20       2640 MB/s  2079 MB/s       55479   0.66 logic-1
done... (cIters=10 dIters=10 cTime=1.0 dTime=2.0 chunkSize=1706MB cSpeed=0MB)

kc85-cpuclk.sr

$ unzip kc85-cpuclk.sr; ls -l logic-1-1 # 25000 bytes
$ ./lzbench -i10,10 -p3 -elibdeflate,3,1/lz4/lz4fast,3,1/zstd,3,1,-20/zstdLDM,3,1,-20 logic-1-1
lzbench 1.7.3 (64-bit Linux)   Assembled by P.Skibinski
Compressor name         Compress. Decompress. Compr. size  Ratio Filename
memcpy                   1431 MB/s  2130 MB/s       25000 100.00 logic-1-1
libdeflate 0.7 -3          98 MB/s   507 MB/s        4915  19.66 logic-1-1
libdeflate 0.7 -1         113 MB/s   489 MB/s        5036  20.14 logic-1-1
lz4 1.8.0                 819 MB/s  1598 MB/s        7400  29.60 logic-1-1
lz4fast 1.8.0 -3          952 MB/s  1737 MB/s        7616  30.46 logic-1-1
lz4fast 1.8.0 -1          817 MB/s  1590 MB/s        7400  29.60 logic-1-1
zstd 1.3.4 -3             242 MB/s   664 MB/s        3901  15.60 logic-1-1
zstd 1.3.4 -1             273 MB/s   711 MB/s        3954  15.82 logic-1-1
zstd 1.3.4 --20           374 MB/s   699 MB/s        5159  20.64 logic-1-1
zstdLDM 1.3.4 -3          242 MB/s   665 MB/s        3901  15.60 logic-1-1
zstdLDM 1.3.4 -1          273 MB/s   713 MB/s        3954  15.82 logic-1-1
zstdLDM 1.3.4 --20        374 MB/s   699 MB/s        5159  20.64 logic-1-1
done... (cIters=10 dIters=10 cTime=1.0 dTime=2.0 chunkSize=1706MB cSpeed=0MB)

a6000_selp1650_init.sr

$ unzip a6000_selp1650_init.sr; cat logic-1-* > all.dd # 30641011 bytes
$ ./lzbench -i10,10 -p3 -elibdeflate,3,1/lz4/lz4fast,3,1/zstd,3,1,-20/zstdLDM,3,1,-20 all.dd
lzbench 1.7.3 (64-bit Linux)   Assembled by P.Skibinski
Compressor name         Compress. Decompress. Compr. size  Ratio Filename
memcpy                   2031 MB/s  3033 MB/s    30641011 100.00 all.dd
libdeflate 0.7 -3         286 MB/s  2930 MB/s      165960   0.54 all.dd
libdeflate 0.7 -1         285 MB/s  2777 MB/s      186469   0.61 all.dd
lz4 1.8.0                3992 MB/s  2476 MB/s      462105   1.51 all.dd
lz4fast 1.8.0 -3         3968 MB/s  2381 MB/s      462108   1.51 all.dd
lz4fast 1.8.0 -1         4178 MB/s  2633 MB/s      462105   1.51 all.dd
zstd 1.3.4 -3            2566 MB/s  2266 MB/s      147443   0.48 all.dd
zstd 1.3.4 -1            2701 MB/s  2250 MB/s      147714   0.48 all.dd
zstd 1.3.4 --20          2609 MB/s  2196 MB/s      161938   0.53 all.dd
zstdLDM 1.3.4 -3         2519 MB/s  2131 MB/s      147443   0.48 all.dd
zstdLDM 1.3.4 -1         2630 MB/s  2179 MB/s      147714   0.48 all.dd
zstdLDM 1.3.4 --20       2507 MB/s  2209 MB/s      161938   0.53 all.dd
done... (cIters=10 dIters=10 cTime=1.0 dTime=2.0 chunkSize=1706MB cSpeed=0MB)

smoothieware.sr

$ unzip smoothieware.sr; cat logic-1-* > all.dd # 100000000 bytes
$ ./lzbench -i10,10 -p3 -elibdeflate,3,1/lz4/lz4fast,3,1/zstd,3,1,-20/zstdLDM,3,1,-20 all.dd
lzbench 1.7.3 (64-bit Linux)   Assembled by P.Skibinski
Compressor name         Compress. Decompress. Compr. size  Ratio Filename
memcpy                   4101 MB/s  4226 MB/s   100000000 100.00 all.dd
libdeflate 0.7 -3         274 MB/s  3203 MB/s      402189   0.40 all.dd
libdeflate 0.7 -1         277 MB/s  3550 MB/s      404184   0.40 all.dd
lz4 1.8.0                4884 MB/s  2769 MB/s     1084208   1.08 all.dd
lz4fast 1.8.0 -3         4858 MB/s  2793 MB/s     1068513   1.07 all.dd
lz4fast 1.8.0 -1         4882 MB/s  2778 MB/s     1084208   1.08 all.dd
zstd 1.3.4 -3            4044 MB/s  2993 MB/s      211312   0.21 all.dd
zstd 1.3.4 -1            4027 MB/s  2991 MB/s      218483   0.22 all.dd
zstd 1.3.4 --20          3945 MB/s  2946 MB/s      229971   0.23 all.dd
zstdLDM 1.3.4 -3         3979 MB/s  2993 MB/s      211312   0.21 all.dd
zstdLDM 1.3.4 -1         4000 MB/s  2983 MB/s      218483   0.22 all.dd
zstdLDM 1.3.4 --20       3985 MB/s  2948 MB/s      229971   0.23 all.dd
done... (cIters=10 dIters=10 cTime=1.0 dTime=2.0 chunkSize=1706MB cSpeed=0MB)

imx6_quad/working.sr

$ unzip working.sr; cat logic-1-* > all.dd # 1255425344 bytes
$ ./lzbench -i10,10 -p3 -elibdeflate,3,1/lz4/lz4fast,3,1/zstd,3,1,-20/zstdLDM,3,1,-20 all.dd
lzbench 1.7.3 (64-bit Linux)   Assembled by P.Skibinski
Compressor name         Compress. Decompress. Compr. size  Ratio Filename
memcpy                   3813 MB/s  3217 MB/s  1255425344 100.00 all.dd
libdeflate 0.7 -3         286 MB/s   761 MB/s     5223391   0.42 all.dd
libdeflate 0.7 -1         287 MB/s   749 MB/s     4908528   0.39 all.dd
lz4 1.8.0                4422 MB/s  2163 MB/s    19907924   1.59 all.dd
lz4fast 1.8.0 -3         4440 MB/s  2184 MB/s    19939203   1.59 all.dd
lz4fast 1.8.0 -1         4424 MB/s  2214 MB/s    19907924   1.59 all.dd
zstd 1.3.4 -3            4003 MB/s  2205 MB/s     1526628   0.12 all.dd
zstd 1.3.4 -1            4082 MB/s  2208 MB/s     1541368   0.12 all.dd
zstd 1.3.4 --20          4159 MB/s  2082 MB/s     1573644   0.13 all.dd
zstdLDM 1.3.4 -3         3679 MB/s  2228 MB/s     1526628   0.12 all.dd
zstdLDM 1.3.4 -1         4119 MB/s  2241 MB/s     1541368   0.12 all.dd
zstdLDM 1.3.4 --20       4182 MB/s  2312 MB/s     1573644   0.13 all.dd
done... (cIters=10 dIters=10 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 -i10,10 -p3 -elibdeflate,3,1/lz4/lz4fast,3,1/zstd,3,1,-20/zstdLDM,3,1,-20 all_ch1.dd
lzbench 1.7.3 (64-bit Linux)   Assembled by P.Skibinski
Compressor name         Compress. Decompress. Compr. size  Ratio Filename
memcpy                   4119 MB/s  4030 MB/s   200000000 100.00 all_ch1.dd
libdeflate 0.7 -3         179 MB/s   966 MB/s    10008846   5.00 all_ch1.dd
libdeflate 0.7 -1         198 MB/s   690 MB/s    11426059   5.71 all_ch1.dd
lz4 1.8.0                1051 MB/s  1485 MB/s    28803992  14.40 all_ch1.dd
lz4fast 1.8.0 -3         1040 MB/s  1480 MB/s    28823393  14.41 all_ch1.dd
lz4fast 1.8.0 -1         1043 MB/s  1486 MB/s    28803992  14.40 all_ch1.dd
zstd 1.3.4 -3             434 MB/s   728 MB/s    11095196   5.55 all_ch1.dd
zstd 1.3.4 -1             441 MB/s   726 MB/s    11106610   5.55 all_ch1.dd
zstd 1.3.4 --20           444 MB/s   728 MB/s    11271377   5.64 all_ch1.dd
zstdLDM 1.3.4 -3          427 MB/s   726 MB/s    11095196   5.55 all_ch1.dd
zstdLDM 1.3.4 -1          444 MB/s   726 MB/s    11106610   5.55 all_ch1.dd
zstdLDM 1.3.4 --20        444 MB/s   728 MB/s    11271377   5.64 all_ch1.dd
done... (cIters=10 dIters=10 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 -i10,10 -p3 -elibdeflate,3,1/lz4/lz4fast,3,1/zstd,3,1,-20/zstdLDM,3,1,-20 all_ch12.dd
lzbench 1.7.3 (64-bit Linux)   Assembled by P.Skibinski
Compressor name         Compress. Decompress. Compr. size  Ratio Filename
memcpy                   4200 MB/s  1964 MB/s   400000000 100.00 all_ch12.dd
libdeflate 0.7 -3         210 MB/s   926 MB/s    13019016   3.25 all_ch12.dd
libdeflate 0.7 -1         224 MB/s   794 MB/s    14643158   3.66 all_ch12.dd
lz4 1.8.0                1495 MB/s  1893 MB/s    36580151   9.15 all_ch12.dd
lz4fast 1.8.0 -3         1498 MB/s  1929 MB/s    36615674   9.15 all_ch12.dd
lz4fast 1.8.0 -1         1496 MB/s  1948 MB/s    36580151   9.15 all_ch12.dd
zstd 1.3.4 -3             654 MB/s  1049 MB/s    14293025   3.57 all_ch12.dd
zstd 1.3.4 -1             668 MB/s  1050 MB/s    14313847   3.58 all_ch12.dd
zstd 1.3.4 --20           671 MB/s  1042 MB/s    14574127   3.64 all_ch12.dd
zstdLDM 1.3.4 -3          650 MB/s  1047 MB/s    14293025   3.57 all_ch12.dd
zstdLDM 1.3.4 -1          671 MB/s  1048 MB/s    14313847   3.58 all_ch12.dd
zstdLDM 1.3.4 --20        671 MB/s  1043 MB/s    14574127   3.64 all_ch12.dd
done... (cIters=10 dIters=10 cTime=1.0 dTime=2.0 chunkSize=1706MB cSpeed=0MB)