test-automation

Install

sudo yarn install
If you hav install the puppeteer in the project, you can skip the puppeteer's download by run as follows:
sudo env PUPPETEER_SKIP_CHROMIUM_DOWNLOAD=true yarn install
Tips:

1. If sudo yarn install get stuck when download 'puppeteer' you can try to change the mirror of Chrominum following the code below:

sudo PUPPETEER_DOWNLOAD_HOST=https://storage.googleapis.com.cnpmjs.org cnpm i puppeteer -D  

2. If 1 don't work for you, you can try:

vi .npmrc  
type puppeteer_download_host = https://npm.taobao.org/mirrors  

Use

1. single thread mode:

node singleThread.js  

2. multiple threads mode:

node --experimental-worker multiThreads.js  

Performance Analyse

node --prof singleProcess.js  

Info: Replace the filename of log according to your output file.

node --prof-process isolate-0x104000c00-v8.log > processed.txt  

Performance Metrics

白屏时间（first Paint Time）——用户从打开页面开始到页面开始有东西呈现为止
First Contentful Paint: First Contentful Paint marks the time at which the first text or image is painted.
First Meaningful Paint: First Meaningful Paint measures when the primary content of a page is visible.
用户可操作时间(dom Interactive)——用户可以进行正常的点击、输入等操作

Statistics Metrics

TP50/80/90/95/99
TP=Top Percentile，Top 百分数，是一个统计学里的术语，与平均数、中位数都是一类。
TP50、TP90 和 TP99 等指标常用于系统性能监控场景，指高于 50%、90%、99%等百分线的情况。

Use Guide

SingleThread Mode

In singleThread mode, the config of 5 browsers with 10 pages per browser, tends to run better than the config of 10 browsers with 5 pages per browser.

Todo

1. Improve the concurrent efficiency when trying to view many pages at one time.
2. Provide GUI for the output of project.