cmpthese(-1, { fib1 => q{ fib1 20 }, fib2 => q{ fib2 20 }, fib3 => q{ fib3 20 }, fib4 => q{ fib4 20 }, }); __END__ C:\test>memofib.pl Rate fib1 fib2 fib3 fib4 fib1 87.4/s -- -100% -100% -100% fib2 223254/s 255377% -- -89% -91% fib3 2071504/s 2370384% 828% -- -20% fib4 2579867/s 2952119% 1056% 25% --