length         intrinsic(ops/ms)        no intrinsic(ops/ms)         intrinsic / no intrinsic
1              1773.081                 1702.339                     1.04
2              1762.964                 1589.698                     1.11
3              1395.300                 1351.399                     1.03
5              1080.788                 1031.332                     1.05
10             890.348                  505.824                      1.76
50             85.863                   32.142                       2.67
100            23.429                   8.368                        2.80
1000           0.248                    0.086                        2.88
2000           0.062                    0.022                        2.82
5000           0.009                    0.003                        3.00