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Contents
require 'benchmark'
module Ramaze
module Helper
##
# The Benchmark helper is a simple helper that can be used to benchmark
# certain blocks of code by wrapping them in a block. This can be useful if
# you want to see how long a certain query takes or how long it takes to
# create a new user.
#
module Bench
##
# Will first run an empty loop to determine the overhead it imposes, then
# goes on to yield your block +iterations+ times.
#
# The last yielded return value will be returned upon completion of the
# benchmark and the result of the benchmark itself will be sent to
# Log.info
#
# Example:
#
# class MainController < Ramaze::Controller
# def index
# @users = bench{ User.all }
# @tags = bench{ Article.tags }
# end
# end
#
# This will show something like following in your log:
#
# [..] INFO Bench ./start.rb:3:in `index': 0.121163845062256
# [..] INFO Bench ./start.rb:4:in `index': 2.234987235098341
#
# So now we know that the Article.tags call takes the most time and
# should be improved.
#
# @param [Fixnum] iterations The amount of iterations to run.
# @return [Mixed]
#
def bench(iterations = 1)
result = nil
from = caller[0]
delta = Benchmark.realtime{ iterations.times{ nil }}
taken = Benchmark.realtime{ iterations.times{ result = yield }}
Log.info "Bench #{from}: #{taken - delta}"
return result
end
end # Bench
end # Helper
end # Ramaze
Version data entries
7 entries across 7 versions & 1 rubygems