小编sun*_*ity的帖子

可能重复:
'ab'程序在很多请求后冻结,为什么？

这是一个简单的测试服务器:

require 'rubygems'
require 'rack'
require 'thin'

class HelloWorld

  def call(env)
    [200, {"Content-Type" => "text/plain"}, "OK"]
  end
end

Rack::Handler::Thin.run HelloWorld.new, :Port => 9294 
#I've tried with these added too, 'rack.multithread' => true, 'rack.multiprocess' => true

这是一个测试运行:

$ ab -n 20000 http://0.0.0.0:9294/sdf
This is ApacheBench, Version 2.3 <$Revision: 655654 $>
Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Licensed to The Apache Software Foundation, http://www.apache.org/

Benchmarking 0.0.0.0 (be patient)
Completed 2000 requests
Completed 4000 requests
Completed 6000 requests
Completed …

puts [1,2,3].map do |x| 
  x + 1 
end.inspect

随着ruby 1.9.2的回归

<Enumerator:0x0000010086be50>

红宝石1.8.7:

# 1
# 2
# 3

分配变量......

x = [1,2,3].map do |x| 
  x + 1 
end.inspect

puts x

[2,3,4]

小胡子块按预期工作:

puts [1,2,3].map { |x| x + 1 }.inspect

[2,3,4]

我正在使用一个包含大型实例数组的类.

每当我初始化这样的一类,例如i = Image.new,我从我的阵列中大量的垃圾输出(@r,@g,@b-每个〜300K值).

 class Image

   def initialize(width=640, height=480, brightness=64)
     @width, @height, @brightness = width, height, brightness
     self.load('usart.dat')
   end

   def load(file='usart.dat')
     self.reset
     f = IO.read(file, @height * @width * 2, 0)

     # Parsing the datafile, saving data in @r, @g, @b, @gray etc

     end

     return self
   end

   # ... More methods
 end

问题是,我怎样才能使输出静音(所有结果都保存到文件中,从不在控制台中查看)或者使初始化程序不检查自身.我想返回self,因为我想要堆叠方法,例如image.load('file').binary.grayscale.save(:bin).