红宝石。线程基准

Posted 2021-02-24

Connect to three sites using threads and without using them. Fetch the response. Measure the benchmark.

# encoding: utf-8
 
require 'net/http'
require 'benchmark'
 
class StatusFetcher
  attr_reader :result
 
  def initialize
    @result = []
  end
 
  def self.start!
    new
  end
end
 
class ThreadStatusFetcher < StatusFetcher
  def initialize
    super
    threads = []
    %w{ stackoverflow.com
        superuser.com
        systemfault.com
      }.each do |page|
      threads << Thread.new(page) do |url|
        http = Net::HTTP.new(url, 80)
        @result << "#{url}: #{http.get('/').message}"
      end
    end
    threads.each(&:join)
  end
end
 
class SimpleStatusFetcher < StatusFetcher
  def initialize
    super
    %w{ stackoverflow.com
        superuser.com
        systemfault.com
      }.each do |url|
        http = Net::HTTP.new(url, 80)
        @result << "#{url}: #{http.get('/').message}"
    end
  end
end
 
Benchmark.bm(8) do |r|
  r.report('simple') { SimpleStatusFetcher.start!.result }
  r.report('thread') { ThreadStatusFetcher.start!.result }
end