Kraken vs. zlib -9

gistfile1.txt

(on my work Core i7-3770S @ 3.1GHz)

got arg : compressor = zlib9
enabled: zlib9
arg : r:\bigtest\silesia_mozilla
loading file (0/1) : silesia_mozilla
zlib9 : 51,220,480 ->20,441,871 =  3.193 bpb =  2.506 to 1
encode           : 3.345 seconds, 4.80 b/kc, rate= 15.31 M/s
decode           : 0.142 seconds, 113.28 b/kc, rate= 361.69 M/s


vs.

got arg : level = 4 = Normal
got arg : compressor_arg = 8 = Kraken
got arg : num_repeats = 6
silesia_mozilla : 51,220,480 ->15,790,735 =  2.466 bpb =  3.244 to 1
encode only      : 2.305 seconds, 6.96 b/kc, rate= 22.22 mb/s
decode only      : 0.053 seconds, 301.14 b/kc, rate= 961.74 mb/s

vs.

got arg : level = 5 = Optimal1
got arg : compressor_arg = 8 = Kraken
got arg : num_repeats = 6
silesia_mozilla : 51,220,480 ->14,859,818 =  2.321 bpb =  3.447 to 1
encode only      : 11.935 seconds, 1.34 b/kc, rate= 4.29 mb/s
decode only      : 0.046 seconds, 347.42 b/kc, rate= 1109.54 mb/s