or download this
Benchmark: timing 1000 iterations of build_print, list_print...
build_print: 120 wallclock secs (119.84 usr + 0.04 sys = 119.88 CPU)
+@ 8.34/s (n=1000)
...
Rate build_print list_print
build_print 8.34/s -- -24%
list_print 10.9/s 31% --