react-perf-utils

A small library that provides access to the algorithms that are used for the pretty print functions in react-addons-perf and a handful of simple functions that can be used to measure against rendering performance budgets when testing.

See react-addons-perf for more information on how to collect measurements.

API

See react/lib/ReactDefaultPerfAnalysis.js for more information on getExclusiveSummary, getInclusiveSummary, getDOMSummary, and getTotalTime.

Setup

All API examples assume that the following code has been executed:

import ReactDOM from "react-dom";
import Perf from 'react-addons-perf';
import MyApp from './my-app';

// start -> render -> stop -> get measurements
Perf.start();
ReactDOM.render(<MyApp />, document.getElementById('root'));
Perf.stop();

getAvgRenderTime

The average rendering time for all instances of a given component.

const measurements = Perf.getLastMeasurements();
const avgRenderTime = PerfUtils.getAvgRenderTime('SomeCmpName', measurements);

getAvgMountTime

The average mount time for all instances of a given component.

const measurements = Perf.getLastMeasurements();
const avgMountTime = PerfUtils.getAvgMountTime('SomeCmpName', measurements);

getTotalRenderTime

The total rendering time for all instances of a given component.

const measurements = Perf.getLastMeasurements();
const totalRenderTime = PerfUtils.getTotalRenderTime('SomeCmpName', measurements);

getTotalMountTime

The total mount time for all instances of a given component.

const measurements = Perf.getLastMeasurements();
const totalMountTime = PerfUtils.getTotalMountTime('SomeCmpName', measurements);