wrk.md

wrk 来构造http性能测试用例

https://gist.github.com/denji/8333630 HTTP(S) Benchmark Tools / Toolkit for testing/debugging HTTP(S) and restAPI (RESTful)

参考：https://github.com/wg/wrk/blob/master/scripts/counter.lua

ab发送的请求都是一样的，某些情况下我们需要构造不同的http请求来并发测试，可以用wrk，写lua脚本来针对每个请求定制请求头。

wxh-rmbp :: ~ » cat x.lua

counter = 0

request = function()
   path = "/index.html?r=" .. counter
   wrk.headers["Host"] = "www.demo-"..counter..".com"
   counter = counter + 1
   return wrk.format(nil, path)
end

wxh-rmbp :: ~ » wrk -s x.lua -t1 -c4 -d1s  http://127.0.0.1:8000/index.html
Running 1s test @ http://127.0.0.1:8000/index.html
  1 threads and 4 connections
  Thread Stats   Avg      Stdev     Max   +/- Stdev
    Latency     1.48ms  274.37us   4.38ms   84.05%
    Req/Sec     2.49k   193.78     2.72k    81.82%
  2725 requests in 1.10s, 620.04KB read
Requests/sec:   2478.73
Transfer/sec:    564.01KB