Rate split_and_re_check re_check_and_split no_re_check_and_split
split_and_re_check    50243/s                 --               -18%                  -29%
re_check_and_split    61265/s                22%                 --                  -13%
no_re_check_and_split 70274/s                40%                15%                    --

                         Rate split_and_re_check re_check_and_split no_re_check_and_split
split_and_re_check    53593/s                 --               -19%                  -27%
re_check_and_split    66370/s                24%                 --                  -10%
no_re_check_and_split 73770/s                38%                11%                    --

                         Rate split_and_re_check re_check_and_split no_re_check_and_split
split_and_re_check    53096/s                 --               -20%                  -27%
re_check_and_split    66369/s                25%                 --                   -8%
no_re_check_and_split 72404/s                36%                 9%                    --
ken@ganymede: ~/tmp