node.js性能压力测试入门教程：wrk和loadtest安装使用

wrk

wrk 是一个通用的性能压力测试工具，可通过linux编绎安装，叵通过 brew 安装

brew install wrk

使用：

wrk -t12 -c400 -d30s http://127.0.0.1:8080/index.html

这条语句使用12个进程，连续测试30秒，并同时保持400个并发

loadtest

loadtest 是支持通过 npm 安装的一个性能测试工具, 支持 windows和linux，在 node.js 的项目中使用非常方便

全局安装:

npm install -g loadtest

使用

连续测试下面的服务20秒，保持100个并发

loadtest http://localhost:8054/test -t 20 -c 100

测试结果

[Sat Jun 06 2020 09:53:04 GMT+0800 (GMT+08:00)] INFO Requests: 0, requests per second: 0, mean latency: 0 ms
[Sat Jun 06 2020 09:53:09 GMT+0800 (GMT+08:00)] INFO Requests: 2202, requests per second: 442, mean latency: 224.6 ms
[Sat Jun 06 2020 09:53:14 GMT+0800 (GMT+08:00)] INFO Requests: 5035, requests per second: 565, mean latency: 178.6 ms
[Sat Jun 06 2020 09:53:19 GMT+0800 (GMT+08:00)] INFO Requests: 8195, requests per second: 628, mean latency: 157.5 ms
[Sat Jun 06 2020 09:53:24 GMT+0800 (GMT+08:00)] INFO
[Sat Jun 06 2020 09:53:24 GMT+0800 (GMT+08:00)] INFO Target URL:          http://localhost:8054/test
[Sat Jun 06 2020 09:53:24 GMT+0800 (GMT+08:00)] INFO Max time (s):        20
[Sat Jun 06 2020 09:53:24 GMT+0800 (GMT+08:00)] INFO Concurrency level:   100
[Sat Jun 06 2020 09:53:24 GMT+0800 (GMT+08:00)] INFO Agent:               none
[Sat Jun 06 2020 09:53:24 GMT+0800 (GMT+08:00)] INFO
[Sat Jun 06 2020 09:53:24 GMT+0800 (GMT+08:00)] INFO Completed requests:  11340
[Sat Jun 06 2020 09:53:24 GMT+0800 (GMT+08:00)] INFO Total errors:        0
[Sat Jun 06 2020 09:53:24 GMT+0800 (GMT+08:00)] INFO Total time:          20.0070496 s
[Sat Jun 06 2020 09:53:24 GMT+0800 (GMT+08:00)] INFO Requests per second: 567
[Sat Jun 06 2020 09:53:24 GMT+0800 (GMT+08:00)] INFO Mean latency:        174.5 ms
[Sat Jun 06 2020 09:53:24 GMT+0800 (GMT+08:00)] INFO
[Sat Jun 06 2020 09:53:24 GMT+0800 (GMT+08:00)] INFO Percentage of the requests served within a certain time
[Sat Jun 06 2020 09:53:24 GMT+0800 (GMT+08:00)] INFO   50%      165 ms
[Sat Jun 06 2020 09:53:24 GMT+0800 (GMT+08:00)] INFO   90%      229 ms
[Sat Jun 06 2020 09:53:24 GMT+0800 (GMT+08:00)] INFO   95%      249 ms
[Sat Jun 06 2020 09:53:24 GMT+0800 (GMT+08:00)] INFO   99%      296 ms
[Sat Jun 06 2020 09:53:24 GMT+0800 (GMT+08:00)] INFO  100%      349 ms (longest request)