Here are some more tests especially for speeds and ratios using this on freearc with m1..3 options.
Code:
m1
Compressed 2,069 files, 2,021,910,366 => 1,398,395,234 bytes. Ratio 69.16%
Compression time: cpu 1.98 sec/real 51.44 sec = 4%. Speed 39.31 mB/s
All OK
Extracted 2,069 files, 1,398,395,234 => 2,021,910,366 bytes. Ratio 69.16%
Extraction time: cpu 2.84 sec/real 11.10 sec = 26%. Speed 182.10 mB/s
All OK
m2
Compressed 2,070 files, 2,021,909,999 => 1,381,120,835 bytes. Ratio 68.31%
Compression time: cpu 1.58 sec/real 61.43 sec = 3%. Speed 32.92 mB/s
All OK
Extracted 2,070 files, 1,381,120,835 => 2,021,909,999 bytes. Ratio 68.31%
Extraction time: cpu 3.33 sec/real 33.70 sec = 10%. Speed 60.01 mB/s
All OK
m3
Compressed 2,070 files, 2,021,910,324 => 1,369,785,848 bytes. Ratio 67.75%
Compression time: cpu 1.47 sec/real 64.20 sec = 2%. Speed 31.49 mB/s
All OK
Extracted 2,070 files, 1,369,785,848 => 2,021,910,324 bytes. Ratio 67.75%
Extraction time: cpu 3.44 sec/real 40.05 sec = 9%. Speed 50.49 mB/s
All OK