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README.md

ember-macro-bench

A tool for measuring changes in Ember to applications.

This uses chrome-tracing and har-remix to measure the effects of small changes to Ember on applications.

This is also a demonstration of using these tools to measure applications.

Setup

Prerequisites

These instructions assume Mac and using homebrew.

Install R

brew tap homebrew/science
brew install r

Run R

R

Then install R packages:

install.packages("jsonlite")
install.packages("R6")
install.packages("ggplot2")
q()

Install yarn

brew install yarn

Install

git clone git@github.com:krisselden/ember-macro-benchmark.git
cd ember-macro-benchmark
yarn

Run the Server

Edit the config.json

  • har: The emberaddons.com HAR file, the example is a recording of emberaddons.com built with Ember 2.13.0-beta.1
  • runCount: Number of benchmarks to run
  • cpuThrottleRate: Throttling rate as a slowdown factor (1 is no throttle, 2 is 2x slowdown, etc).
  • networkCondition: Configurations for combinations of latency/downloadThroughput/uploadThroughput. Presets are taken from addyosmani/network-emulation-conditions
    • Available options: GPRS, REGULAR_2G, GOOD_2G, REGULAR_3G, GOOD_3G, REGULAR_4G, DSL, WIFI.
  • servers
    • name: Name of the server
    • port: Port for the server to run on
    • dist: path to full emberaddons.com build. Use this when testing ember versions that require wire format changes. Note that you must use an unfingerprinted production build.
    • ember: path to an ember dist to splice into the vendor.js, the example results were tested against Ember commit 2c45a3b.

Caveat: the templates are in the recorded app, you can only test with an Ember with compatible template wire-format as the recording unless you add a dist to the server

yarn run serve

Run the Benchmark

While the app is being served, run:

yarn run bench

Generate the Report

To generate the report run:

yarn run plot

Which will generate a PDF in the results folder with the reports from Chrome Tracing. It contains several graphs and plots for. Here are a few resources to help you read them:

If you'd like to see a smaller summary in your CLI you can run:

yarn run report

Which will give you an abbreviated report.

About

Benchmark recording of an ember app with running with 2 versions of Ember.

Resources

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