使用Apache ab進行http性能測試

Mac自帶了Apache環境

打開「終端(terminal)」，輸入 sudo apachectl -v，（可能須要輸入機器祕密）。以下顯示Apache的版本

接着輸入 sudo apachectl start，這樣Apache就啓動了。打開Safari瀏覽器地址欄輸入 「http://localhost」，能夠看到內容爲「It works!」的頁面。其位於「/Library（資源庫）/WebServer/Documents/」下，這就是Apache的默認根目錄。

Apache的安裝目錄在：/etc/apache2/，etc默認是隱藏的。有三種方式查看：

1. dock下右鍵Finder，選擇"前往文件夾"，輸入"/etc"
2. 在finder下－－－－》前往－－－》前往文件夾，而後輸入/etc
3. 能夠在terminal 輸入 "open /etc"

windows能夠去http://httpd.apache.org/download.cgi下載，或者從命令行安裝

1. 安裝apache

     sudo port install apache2

啓動apache: sudo apachectl start

2.  brew install pcre
3. wget http://ftp.yz.yamagata-u.ac.jp/pub/network/apache//httpd/httpd-2.4.4.tar.bz2
   (1)解壓
   (2) ./configure
   (3) make && make install
   (4) sudo cp support/ab /usr/sbin
   
4. ab -n 1000 -c 10 http://localhost:3000/  最後這個斜槓不能少

這個ab -n1000 -c10 http://localhost:3000/命令，在window系統下，須要先用cd命令定位到你的apache安裝目錄的bin文件夾。。。

 

ab的參數說明

-n  須要執行的請求次數

-c  併發的數量

-t   等待返回的最長時間

-b  TCP收發緩衝區的大小，單位（byte）

-p 使用post (同時須要定義-T參數)

-u 使用put (同時須要定義-T參數)

-T content-type, 例如application/x-www-form-urlencoded, 默認爲text/plain

-w 把結果打印在html的表格裏

-x  表格的屬性

-y  tr行屬性

-z  td列屬性

-C 設置cookie 例如Apach=1234

-H header行， 例如Accept-Encoding:gzip

-k 是否標示位HTTP Keep Alive 

 測試結果：

This is ApacheBench, Version 2.3 <$Revision: 1663405 $>
Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Licensed to The Apache Software Foundation, http://www.apache.org/

Benchmarking localhost (be patient)
Completed 100 requests
Completed 200 requests
Completed 300 requests
Completed 400 requests
Completed 500 requests
Completed 600 requests
Completed 700 requests
Completed 800 requests
Completed 900 requests
Completed 1000 requests
Finished 1000 requests


Server Software:        
Server Hostname:        localhost
Server Port:            3000

Document Path:          /
Document Length:        14 bytes

Concurrency Level:      10
Time taken for tests:   0.323 seconds
Complete requests:      1000
Failed requests:        0
Total transferred:      115000 bytes
HTML transferred:       14000 bytes
Requests per second:    3097.37 [#/sec] (mean)
Time per request:       3.229 [ms] (mean)
Time per request:       0.323 [ms] (mean, across all concurrent requests)
Transfer rate:          347.85 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:        0    0   0.1      0       1
Processing:     1    3   2.2      2      16
Waiting:        1    3   2.2      2      16
Total:          1    3   2.2      2      16

Percentage of the requests served within a certain time (ms)
  50%      2
  66%      3
  75%      3
  80%      4
  90%      5
  95%      7
  98%     13
  99%     15
 100%     16 (longest request)