1 // Copyright 2018 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 // To benchmark a specific version of Chrome set the CHROME_PATH environment 6 // variable, e.g.: 7 // $ CHROME_PATH=~/chromium/src/out/Release/chrome node benchmark-octane.js 8 9 const puppeteer = require('puppeteer'); 10 11 async function runOctane(samplingRate) { 12 const args = ['--enable-devtools-experiments']; 13 if (samplingRate) 14 args.push(`--sampling-heap-profiler=${samplingRate}`); 15 while (true) { 16 let brower; 17 try { 18 browser = await puppeteer.launch({ 19 executablePath: process.env.CHROME_PATH, args, headless: true}); 20 const page = await browser.newPage(); 21 await page.goto('https://chromium.github.io/octane/'); 22 await page.waitForSelector('#run-octane'); // Just in case. 23 await page.click('#run-octane'); 24 25 const scoreDiv = await page.waitForSelector('#main-banner:only-child', 26 {timeout: 120000}); 27 const scoreText = await page.evaluate(e => e.innerText, scoreDiv); 28 const match = /Score:\s*(\d+)/.exec(scoreText); 29 if (match.length < 2) 30 continue; 31 return parseInt(match[1]); 32 } finally { 33 if (browser) 34 await browser.close(); 35 } 36 } 37 } 38 39 async function makeRuns(rates) { 40 const scores = []; 41 for (const rate of rates) 42 scores.push(await runOctane(rate)); 43 console.log(scores.join('\t')); 44 } 45 46 async function main() { 47 console.log(`Using ${process.env.CHROME_PATH || puppeteer.executablePath()}`); 48 const rates = [0]; 49 for (let rate = 8; rate <= 2048; rate *= 2) 50 rates.push(rate); 51 console.log('Rates [KB]:'); 52 console.log(rates.join('\t')); 53 console.log('='.repeat(rates.length * 8)); 54 for (let i = 0; i < 100; ++i) 55 await makeRuns(rates); 56 } 57 58 main(); 59
