clinic 简单使用

Posted 2021-03-03 rongfengliang

主要是学习clinic的使用，使用的官方demo

环境准备

• 安装

npm install -g clinic 

• 命令

clinic --help

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  Clinic - v5.0.0

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  Getting started

  As a first step, run the clinic doctor:

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    clinic doctor -- node server.js

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  Then benchmark your server with wrk or autocannon:

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    wrk http://localhost:3000

    autocannon http://localhost:3000

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  Finally shut down your server (Ctrl+C). Once the server process has shutdown

  clinic doctor will analyse the collected data and detect what type of issue

  you are having. Based on the issue type, it will provide a recommendation for

  you.

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  For example, to debug I/O issues, use clinic bubbleprof:

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    clinic bubbleprof -- node server.js

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  Then benchmark your server again, just like you did with clinic doctor.

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  Report an issue

  If you encounter any issue, feel free to send us an issue report at:

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    https://github.com/nearform/node-clinic/issues

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  When creating an issue, it will be a huge help for us if you upload your

  data to the Clinic.js cloud. To do this, use clinic upload:

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    clinic upload 1000.clinic-doctor

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  Utilities

  When using Clinic.js a bunch you have fill up your directory with data folders and files.

  You can clean these easily using clinic clean.

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  More information

  For information on the Clinic.js sub-commands, use the --help option:

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    clinic doctor --help

    clinic bubbleprof --help

    clinic upload --help

    clinic clean --help

    clinic flame --help

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  Flags

  -h | --help Display Help

  -v | --version Display Version

demo 使用

• clone 代码

git clone https://github.com/nearform/node-clinic-doctor-examples.git

• 运行

cd node-clinic-doctor-examples

yarn

clinic doctor --autocannon [ / ] -- node ./slow-io

• 性能报表

从图上可以看出，有io问题，同时也包含了一些推荐的一些分析方法

 

 

分析方法

 

 

• 火焰图

 

clinic flame -- node ./slow-io

试压效果

ab -n 2000 -c 20 http://localhost:3000/

 

 

说明

clinic功能上还真是比较强大，支持的分析模式也比较多，是一款很不错的nodejs应用内性能分析工具

参考资料

https://clinicjs.org/documentation/
https://github.com/nearform/node-clinic