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关于ab:ab测试

ab 测试
应用 ab 进行页面的压力测试
 
ab 是 apache 自带的一个很好用的压力测试工具,当装置完 apache 的时候,就能够在 bin 上面找到 ab
 
1 咱们能够模仿 100 个并发用户,对一个页面发送 1000 个申请
./ab -n1000 -c100 

其中 - n 代表申请数,- c 代表并发数
 
返回后果:

首先是 apache 的版本信息 

This is ApacheBench, Version 2.3 <Revision:655654Revision:655654> 
Copyright 1996 Adam Twiss, Zeus Technology Ltd,
Licensed to The Apache Software Foundation, 

Benchmarking vm1.jianfeng.com (be patient)

Server Software:        Apache/2.2.19    ##apache 版本 
Server Hostname:        vm1.jianfeng.com   ## 申请的机子 
Server Port:            80 ## 申请端口
Document Path:          /a.html 
Document Length:        25 bytes  ## 页面长度
Concurrency Level:      100  ## 并发数 
Time taken for tests:   0.273 seconds  ## 共应用了多少工夫 
Complete requests:      1000   ## 申请数 
Failed requests:        0   ## 失败申请 
Write errors:           0   
Total transferred:      275000 bytes  ## 总共传输字节数,蕴含 http 的头信息等 
HTML transferred:       25000 bytes  ##html 字节数,理论的页面传递字节数 
Requests per second:    3661.60 [#/sec] (mean)  ## 每秒多少申请,这个是十分重要的参数数值,服务器的吞吐量 
Time per request:       27.310 [ms] (mean)  ## 用户均匀申请等待时间 
Time per request:       0.273 [ms] (mean, across all concurrent requests)  ## 服务器均匀解决工夫,也就是服务器吞吐量的倒数 
Transfer rate:          983.34 [Kbytes/sec] received  ## 每秒获取的数据长度
Connection Times (ms) 
              min  mean[+/-sd] median   max 
Connect:        0    1   2.3      0      16 
Processing:     6   25   3.2     25      32 
Waiting:        5   24   3.2     25      32 
Total:          6   25   4.0     25      48
Percentage of the requests served within a certain time (ms) 
  50%     25  ## 50% 的申请在 25ms 内返回 
  66%     26  ## 60% 的申请在 26ms 内返回 
  75%     26 
  80%     26 
  90%     27 
  95%     31 
  98%     38 
  99%     43 
100%     48 (longest request)
 
 
 
2 ab 也能够运行在 windows 中,如果在 windows 下装置 apache, 就能够在 bin 下找到 ab.exe
间接就能够应用,不必依赖其余的 dll
上面是我应用 ab.exe 测试新浪一个页面的后果网页核心:
 
C:\Users\nickyjf\Desktop\useful>ab -n1000 -c100
This is ApacheBench, Version 2.3 <Revision:655654Revision:655654> 
Copyright 1996 Adam Twiss, Zeus Technology Ltd, 
Licensed to The Apache Software Foundation, 

Benchmarking sports.sina.com.cn (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:        Apache/2.0.63 
Server Hostname:        sports.sina.com.cn 
Server Port:            80
Document Path:          /k/2011-05-24/12095590365.shtml 
Document Length:        86680 bytes
Concurrency Level:      100 
Time taken for tests:   66.453 seconds 
Complete requests:      1000 
Failed requests:        0 
Write errors:           0 
Total transferred:      87135790 bytes 
HTML transferred:       86680000 bytes 
Requests per second:    15.05 [#/sec] (mean) 
Time per request:       6645.294 [ms] (mean) 
Time per request:       66.453 [ms] (mean, across all concurrent requests) 
Transfer rate:          1280.51 [Kbytes/sec] received
Connection Times (ms) 
              min  mean[+/-sd] median   max 
Connect:        1   56 398.3      2    3003 
Processing:    89 6331 2603.7   6293   14626 
Waiting:        2 1748 1485.9   1590    6284 
Total:         90 6388 2615.0   6302   14627
Percentage of the requests served within a certain time (ms) 
  50%   6302 
  66%   7121 
  75%   8435 
  80%   9193 
  90%   9231 
  95%   9385 
  98%  11549 
  99%  12459 
100%  14627 (longest request)
 

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