min_by_scan:  6 wallclock secs ( 5.30 usr +  0.00 sys =  5.30 CPU) @ 93681.46/s (n=496219)
min_by_sort:  6 wallclock secs ( 5.28 usr +  0.00 sys =  5.28 CPU) @ 71843.03/s (n=379421)
               Rate min_by_sort min_by_scan
min_by_sort 71843/s          --        -23%
min_by_scan 93681/s         30%          --