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@nornagon
Created Sep 21, 2019
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Electron Fiddle Gist
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Remote vs Local Performance</title>
</head>
<body>
<pre id="out">measuring...
</pre>
<script>
// You can also require other files to run in this process
require('./renderer.js')
</script>
</body>
</html>
// Modules to control application life and create native browser window
const {app, BrowserWindow} = require('electron')
global.obj = {
property: ''
}
// Keep a global reference of the window object, if you don't, the window will
// be closed automatically when the JavaScript object is garbage collected.
let mainWindow
function createWindow () {
// Create the browser window.
mainWindow = new BrowserWindow({
width: 800,
height: 600,
webPreferences: {
nodeIntegration: true
}
})
// and load the index.html of the app.
mainWindow.loadFile('index.html')
// Open the DevTools.
// mainWindow.webContents.openDevTools()
// Emitted when the window is closed.
mainWindow.on('closed', function () {
// Dereference the window object, usually you would store windows
// in an array if your app supports multi windows, this is the time
// when you should delete the corresponding element.
mainWindow = null
})
}
// This method will be called when Electron has finished
// initialization and is ready to create browser windows.
// Some APIs can only be used after this event occurs.
app.on('ready', createWindow)
// Quit when all windows are closed.
app.on('window-all-closed', function () {
// On OS X it is common for applications and their menu bar
// to stay active until the user quits explicitly with Cmd + Q
if (process.platform !== 'darwin') {
app.quit()
}
})
app.on('activate', function () {
// On OS X it's common to re-create a window in the app when the
// dock icon is clicked and there are no other windows open.
if (mainWindow === null) {
createWindow()
}
})
// In this file you can include the rest of your app's specific main process
// code. You can also put them in separate files and require them here.
// This file is required by the index.html file and will
// be executed in the renderer process for that window.
// All of the Node.js APIs are available in this process.
const remoteObj = require('electron').remote.getGlobal('obj')
const localObj = {
property: '',
}
setTimeout(() => {
// warmup
for (let i = 0; i < 1000; i++) {
remoteObj.property
localObj.property
}
{
const begin = performance.now()
for (let i = 0; i < 10000; i++) {
remoteObj.property
}
out.textContent += `remoteObj.property: ${((performance.now() - begin)/10000).toFixed(6)} ms\n`
}
{
const begin = performance.now()
for (let i = 0; i < 10000; i++) {
localObj.property
}
out.textContent += `localObj.property: ${((performance.now() - begin)/10000).toFixed(6)} ms\n`
}
})
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