压力测试工具 - AB(ApacheBench)

迈不过友情╰ 2021-06-24 15:56 566阅读 0赞

## 概述 ##

AB(ApacheBench)用来做http的压力测试。  
**ubuntu里安装ab测试工具**

sudo apt-get install apache2-utils

## 测试命令 ##

**最常用的测试命令如下:**

ab -n 100 -c 10 http://192.168.188.6:8080/distributeLock

－n表示请求数，－c表示并发数

**带自定义header请求:**

ab -n 1 -c 1 -H "Pragma:no-cache" http://192.168.188.6:8080/distributeLock

－H带header请求

**模拟post请求**

ab -n 1 -c 1 -p 'post.txt' -T 'application/x-www-form-urlencoded'   http://192.168.188.6:8080/distributeLock2

－p 用来做post数据的文件，这里此文件保存在ab同级目录下  
\- T 设置content-type值

其它ab命令参数见[官方网站][Link 1].

## 测试结果分析 ##

执行命令:  
ab -n 100 -c 10 [http://192.168.188.6:8080/distributeLock][http_192.168.188.6_8080_distributeLock]

This is ApacheBench, Version 2.3 <$Revision: 1706008 $>
    Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
    Licensed to The Apache Software Foundation, http://www.apache.org/
    
    Benchmarking 192.168.188.6 (be patient).....done
     // web服务器的信息
    Server Software:        
    Server Hostname:        192.168.188.6
    Server Port:            8080
    
    
    Document Path:          /distributeLock // 请求的URL
    Document Length:        14 bytes // http响应正文长度
    
    Concurrency Level:      10   // 并发请求数
    Time taken for tests:   0.153 seconds //整个测试持续的时间
    Complete requests:      100 // 完成的请求数
    Failed requests:        0 //失败的请求数
    Total transferred:      14700 bytes // 全部网络数据传输量 
    HTML transferred:       1400 bytes // 全部html正文数据量
    Requests per second:    652.40 [#/sec] (mean) // 每秒请求数 == Complete requests / Time taken for tests
    Time per request:       15.328 [ms] (mean) // 用户平均请求等待时间 == Time taken for tests / (Complete requests /Concurrency Level)
    Time per request:       1.533 [ms] (mean, across all concurrent requests) // 服务器平均请求处理时间 == Time taken for tests / Complete requests 
    Transfer rate:          93.66 [Kbytes/sec] received //平均每秒网络上的流量 == Total transferred / Time taken for tests
     // 连接的每个阶段花费的时间
    Connection Times (ms) 
                    min  mean[+/-sd] median   max
    Connect:         0     4   2.9     3      10
    Processing:      3    11   7.0     9      65
    Waiting:         3     8   6.7     7      65
    Total:           6    15   7.0    14      68
     // 每个请求处理时间的分布情况
    Percentage of the requests served within a certain time (ms)
      50%     14
      66%     15
      75%     16
      80%     17
      90%     20
      95%     22
      98%     32
      99%     68
     100%     68 (longest request)

[Link 1]: http://httpd.apache.org/docs/2.0/programs/ab.html
[http_192.168.188.6_8080_distributeLock]: http://192.168.188.6:8080/distributeLock