Rails 0.12 (19th April, 2005) Added script/benchmarker to easily benchmark one or more statement a number of times from within the Rails environment.
Usage:
benchmarker times 'Person.expensive_way' 'Person.another_expensive_way' ...
Examples:
# runs the one statement 10 times
script/performance/benchmarker 10 'Person.expensive_method(10)'
# pits the two statements against each other with 50 runs each
script/performance/benchmarker 50 'Person.expensive_method(10)' 'Person.cheap_method(10)'
$ ruby script/performance/benchmarker 50 'Keyword.popular_keywords' 'Keyword.popular_keywords(10)'
user system total real
#1 0.060000 0.010000 0.070000 ( 0.699459)
#2 0.070000 0.020000 0.090000 ( 0.498171)