ben_singleton.rb

##单线程测试代码：

## ben_singleton.rb

require 'benchmark'
require 'bigdecimal/math'
require 'rest-client'
require 'httparty'
require 'faraday'
require 'mechanize'

## 通过修改iterations控制请求数
iterations = 500
url = 'http://www.baidu.com/'

# 测试rest-client
Benchmark.bmbm(10)  do |bm|
	bm.report('rest-client') do
		iterations.times do
			response = RestClient.get url
		end
	end
end

#  测试httpary
Benchmark.bmbm(10)  do |bm|
	bm.report('httparty') do
		iterations.times do
			response = HTTParty.get(url)
		end
	end
end

## 测试faraday
Benchmark.bmbm(10)  do |bm|
	bm.report('faraday') do
		iterations.times do
			response = Faraday.get url
		end
	end
end

## 测试Mechanize
Benchmark.bmbm(10)  do |bm|
	bm.report('Mechanize') do
		iterations.times do
			response = Mechanize.new.get(url)
		end
	end
end


单线程测试结果：


循环次数10次，Mechanize速度最快：
Rehearsal -----------------------------------------------
rest-client   0.010000   0.000000   0.010000 (  0.674061)
-------------------------------------- total: 0.010000sec
                  user     system      total        real
rest-client   0.020000   0.010000   0.030000 (  0.762231)

Rehearsal ----------------------------------------------
httparty     0.010000   0.010000   0.020000 (  0.770611)
------------------------------------- total: 0.020000sec
                 user     system      total        real
httparty     0.020000   0.000000   0.020000 (  0.643453)

Rehearsal ----------------------------------------------
faraday      0.020000   0.010000   0.030000 (  0.744331)
------------------------------------- total: 0.030000sec

                 user     system      total        real
faraday      0.020000   0.010000   0.030000 (  0.703317)

Rehearsal ----------------------------------------------
Mechanize    0.040000   0.000000   0.040000 (  0.419765)
------------------------------------- total: 0.040000sec
                 user     system      total        real
Mechanize    0.030000   0.000000   0.030000 (  0.435737) 

循环次数100次，Mechanize依然速度最快：
Rehearsal -----------------------------------------------
rest-client   0.240000   0.050000   0.290000 (  7.440236)
-------------------------------------- total: 0.290000sec
                  user     system      total        real
rest-client   0.230000   0.060000   0.290000 (  7.236058) 
Rehearsal ----------------------------------------------
httparty     0.200000   0.050000   0.250000 (  6.777424)
------------------------------------- total: 0.250000sec
                 user     system      total        real
httparty     0.210000   0.060000   0.270000 (  6.863603)

Rehearsal ----------------------------------------------
faraday      0.210000   0.060000   0.270000 (  7.376543)
------------------------------------- total: 0.270000sec
                 user     system      total        real
faraday      0.220000   0.050000   0.270000 (  6.731503)

Rehearsal ----------------------------------------------
Mechanize    0.410000   0.030000   0.440000 (  4.626423)
------------------------------------- total: 0.440000sec
                 user     system      total        real
Mechanize    0.390000   0.020000   0.410000 (  4.363442)

循环次数200次，Mechanize还是最快：
Rehearsal -----------------------------------------------
rest-client   0.510000   0.120000   0.630000 ( 16.537392)
-------------------------------------- total: 0.630000sec
                  user     system      total        real
rest-client   0.500000   0.110000   0.610000 ( 18.882200)

Rehearsal ----------------------------------------------
httparty     0.520000   0.120000   0.640000 ( 16.653378)
------------------------------------- total: 0.640000sec
                 user     system      total        real
httparty     0.490000   0.120000   0.610000 ( 15.664201)

Rehearsal ----------------------------------------------
faraday      0.500000   0.110000   0.610000 ( 16.269004)
------------------------------------- total: 0.610000sec
                 user     system      total        real
faraday      0.500000   0.110000   0.610000 ( 16.950023)

Rehearsal ----------------------------------------------
Mechanize    0.890000   0.050000   0.940000 (  9.062458)
------------------------------------- total: 0.940000sec
                 user     system      total        real
Mechanize    0.850000   0.040000   0.890000 (  8.620533) 

循环次数500次，出错：
.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/net/protocol.rb:153:in `read_nonblock': Connection reset by peer (Errno::ECONNRESET)



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