Curl / Curl with multi / Curl with parallel gem

performance_test.rb

require 'parallel'
require 'curb'

TEST_URL = 'http://www.baidu.com'

def normal
  responses = []
  100.times do
    easy = Curl::Easy.new(TEST_URL)
    easy.perform
    responses << easy.body_str
  end
end

def curl_multi
  responses = []
  multi = Curl::Multi.new
  100.times do
    easy = Curl::Easy.new(TEST_URL) do |curl|
      curl.on_complete do |res|
        responses << res.body_str
      end
    end
    multi.add easy
  end
  multi.perform
end

def parallel
  responses = Parallel.map 1..100 do
    easy = Curl::Easy.new(TEST_URL)
    easy.perform
    easy.body_str
  end
end

[ :normal, :curl_multi, :parallel ].each do |strategy|
  puts "using #{strategy} way to do test:"
  start_at = Time.now
  send(strategy)
  stop_at = Time.now
  time_spent = stop_at - start_at
  puts "spent: #{time_spent}s"
end