bench.rb

require 'rubygems'
require 'curb'
require "net/http"
require 'benchmark'

# http://0.0.0.0:8080
# 
# class HomeController < ApplicationController
#   def index
#     sleep 3
#   end
# end

# [lifo@null curb (master)]£ ruby bench.rb 
# Curl::Multi 3.01691508293152
# Net::HTTP 15.0276219844818

responses = {}
curb = Benchmark.realtime do
  m = Curl::Multi.new

  5.times do |i|
    responses[i] = ""

    c = Curl::Easy.new('http://0.0.0.0:8080') do |curl|
      curl.follow_location = false
      curl.on_body{|data| responses[i] << data; data.size }
    end
    m.add(c)
  end

  m.perform
end

puts "Curl::Multi #{curb}"

nh = Benchmark.realtime do
  5.times do
    http = Net::HTTP.start('0.0.0.0', 8080)
    res = http.request(Net::HTTP::Get.new("/"))
  end
end

puts "Net::HTTP #{nh}"