Used in RubyConf Taiwan 2016 https://www.slideshare.net/shikendon/crawler-from-zero

ruby_thread_tests.rb

#!/usr/bin/env ruby

require "benchmark"
require "httparty"
require "parallel"

# You need to modify your open file limit
# if you trying to run this on Mac OS
Benchmark.bmbm do |x|
  x.report("Ruby Thread.new") do
    threads = []
    1000.times do
      threads << Thread.new do
        _response = HTTParty.get("https://www.facebook.com/")
      end
    end
    threads.map(&:join)
  end
  x.report("Ruby Parallel") do
    Parallel.each(1..1000, in_threads: 1000) do
      _response = HTTParty.get("https://www.facebook.com/")
    end
  end
  x.report("Python threading") do
    `python3 threading_test.py`
  end
end