[falkkin@shadow ~/perl] perl odd.pl
odd_1:  6 wallclock secs ( 6.29 usr + -0.00 sys =  6.29 CPU) @ 158982.51/s (n=1000000)
odd_2: 10 wallclock secs ( 9.36 usr + -0.01 sys =  9.35 CPU) @ 106951.87/s (n=1000000)