Ruby/Development/Benchmark

require "benchmark"
iterations = 1000000
b = Benchmark.measure do
  for i in 1..iterations do
    x = i
  end
end
c = Benchmark.measure do
  iterations.times do |i|
    x = i
  end
end
puts b
puts c

require "benchmark"
iterations = 1000000
Benchmark.bm do |bm|
  bm.report("for:") do
    for i in 1..iterations do
      x = i
    end
  end
  bm.report("times:") do
    iterations.times do |i|
      x = i
    end
  end
end

require "rubygems"
require "inline"
require "benchmark"
class CFactorial
  class << self
    inline do |builder|
      builder.c %q{
        long factorial(int value) {
          long result = 1, i = 1;
          for (i = 1; i <= value; i++) {
            result *= i;
          }
          return result;
        }
      }
    end
  end
end
class Fixnum
  def factorial
    (1..self).inject { |a, b| a * b }
  end
end
Benchmark.bm do |bm|
  bm.report("ruby:") do
    100000.times { 8.factorial }
  end
  bm.report("c:") do
    100000.times { CFactorial.factorial(8) }
  end
end

require "benchmark" 
include Benchmark 
test = "this is a test" 
m = test.method(:length) 
n = 100000 
bm(12) {|x| 
    x.report("call") { n.times { m.call } } 
    x.report("send") { n.times { test.send(:length) } } 
    x.report("eval") { n.times { eval "test.length" } } 
}

require "benchmark"
puts Benchmark.measure { 10000.times { print "." } }