Size (B),       block = 1,      block = 4,      block = 64,     block = 1024
  1048576,      0.094970,       0.020879,       0.003186,       0.002128
  2097152,      0.190275,       0.040352,       0.006260,       0.004120
  4194304,      0.378950,       0.081005,       0.013132,       0.008688
  8388608,      0.758710,       0.162465,       0.026368,       0.018048
 16777216,      1.520598,       0.328735,       0.052860,       0.038057
 33554432,      3.040905,       0.651854,       0.106033,       0.075358
 67108864,      6.071026,       1.292299,       0.208520,       0.139785
134217728,      12.149918,      2.599616,       0.403936,       0.281994