nyan.rb

require 'benchmark'

n = 500000

def lm
  lambda{1}.call
end

def bg
  begin
    1
  end
end


Benchmark.bm(7, ">total:", ">avg:") do |x|
  x.report("lambda:") do
    n.times {lm}
  end

  x.report("begin:") do
    n.times {bg}
  end
end

result.txt

              user     system      total        real
lambda:   0.440000   0.000000   0.440000 (  0.443400)
begin:    0.040000   0.000000   0.040000 (  0.040375)