如何使用ab测试工具进行压力测试

ubuntu下安装工具

sudo apt-get install apache2-utils

如何执行命令

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# -t 发完所有请求预计消耗的时间; -n 预计的请求总数; -c 并发级别. 提高并发级别会增加同一时间的请求个数, 具体请求量的计算方式待确定
ab -t seconds -n counts -c concurencylever url

url

结果详解

命令详解

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Concurrency Level:      135 # 同时的请求数
Time taken for tests:   1.254 seconds   
Complete requests:      1350    
Failed requests:        0
Total transferred:      1305450 bytes
HTML transferred:       874800 bytes
Requests per second:    1076.71 [#/sec] (mean)  # 每秒完成请求数, 吞吐率
Time per request:       125.382 [ms] (mean) # 总时间 % 总请求数 * 并发级别
Time per request:       0.929 [ms] (mean, across all concurrent requests) # 总时间 % 总请求数
Transfer rate:          1016.77 [Kbytes/sec] received

Percentage of the requests served within a certain time (ms) # 单个请求耗时占比
  50%    134
  66%    140
  75%    144
  80%    145
  90%    157
  95%    200
  98%    203
  99%    204
 100%    281 (longest request)