基准测试

https://github.com/17koa/koa-benchmark

比较koa和koa2和express性能

Preview

Prerequisites

for OSX

  1. brew install wrk

wrk原理

Wrk Architecture Structure

命令行操作

  1. $ wrk -t8 -c1000 -d10  http://127.0.0.1:3000

Test

首次测试，需要安装依赖，会比较慢

  1. make all

不安装依赖，重复测试

  1. make test

查看中间件请求测试

  1. make test -f Makefile2

Results

  1. ➜  koa-benchmark git:(master) ✗ node -v
  2. v4.0.0
  3. ➜  koa-benchmark git:(master) ✗ npm -v 
  4. 2.14.2
  5. ➜  koa-benchmark git:(master) ✗ npm test 
  6. benchmark koa-1
  8.   1 middleware
  9.   5976.88
  11.   5 middleware
  12.   3495.61
  14.   10 middleware
  15.   5494.52
  17.   15 middleware
  18.   5444.90
  20.   20 middleware
  21.   5631.77
  23.   30 middleware
  24.   5091.48
  26.   50 middleware
  27.   3657.46
  29.   100 middleware
  30.   4712.93
  32. benchmark koa-2
  34.   1 middleware
  35.   5959.41
  37.   5 middleware
  38.   5653.19
  40.   10 middleware
  41.   5652.32
  43.   15 middleware
  44.   5882.88
  46.   20 middleware
  47.   5929.52
  49.   30 middleware
  50.   5700.04
  52.   50 middleware
  53.   5852.57
  55.   100 middleware
  56.   5211.41
  58. benchmark express
  60.   1 middleware
  61.   5500.16
  63.   5 middleware
  64.   5783.63
  66.   10 middleware
  67.   5561.32
  69.   15 middleware
  70.   5253.31
  72.   20 middleware
  73.   5305.64
  75.   30 middleware
  76.   4950.02
  78.   50 middleware
  79.   4472.47
  81.   100 middleware
  82.   4077.43

压力测试模型

  1. 假设支持100w
  2. 每个用户每天访问a次 (web.xxxxx.com)
  3. 每天次数：100w * a
  4. 按照80/20原则，80%的访问集中在20%的时间内
  5. 100w * a * 80%  / 4.8小时
  6. 假设对用户来说每次访问6秒钟是可以接受的
  7. (100w*a*80%/4.8h)*6=测试用并发数据

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