or download this
use Benchmark;
...
Benchmark: timing 1000 iterations of Methods, Operations...
Methods: 2 wallclock secs ( 1.48 usr + 0.01 sys = 1.49 CPU) @ 67
+1.14/s (n=1000)
Operations: 1 wallclock secs ( 1.63 usr + 0.00 sys = 1.63 CPU) @ 61
+3.50/s (n=1000)