example.rb

#!/usr/bin/env ruby

require 'rubygems'
require 'better-benchmark'

# Provide two blocks of code to compare.  For example, two blocks that
# accomplish the same thing, but differ in implementation.  For optimal
# results, the amount of time to execute a single iteration should be large
# enough to adequately diminish the significance of any startup and stoppage
# time of one iteration.  The number of benchmark iterations should not be
# too large; better to increase the amount of work done per iteration.

result = Benchmark.compare_realtime(
  :iterations => 20,
  :inner_iterations => 500_000,
  :verbose => true
) { |iteration|
  if 1 < 2
    x = 'foo'
  else
    x = 'bar'
  end
}.with { |iteration|
  x = ( 1 < 2 ? 'foo' : 'bar' )
}

Benchmark.report_on result