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zertosh/load-benchmark.js

Created August 14, 2016 01:03
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load-benchmark.js
#!/usr/bin/env node
'use strict';
// npm install stats-lite
// export PATH="/System/Library/Frameworks/JavaScriptCore.framework/Versions/Current/Resources:$PATH"
// ./node_modules/.bin/grunt build
// node load-benchmark.js
const {spawnSync} = require('child_process');
const stats = require('stats-lite');
const runs = [
{engine: 'node', NODE_ENV: 'development', build: 'react.js'},
{engine: 'node', NODE_ENV: 'production', build: 'react.js'},
{engine: 'node', build: 'dist/react-with-addons.js'},
{engine: 'node', build: 'dist/react-with-addons.min.js'},
{engine: 'node', build: 'dist/react.js'},
{engine: 'node', build: 'dist/react.min.js'},
{engine: 'jsc', build: 'dist/react-with-addons.js'},
{engine: 'jsc', build: 'dist/react-with-addons.min.js'},
{engine: 'jsc', build: 'dist/react.js'},
{engine: 'jsc', build: 'dist/react.min.js'},
];
runs.map(trial => {
const {engine, build, NODE_ENV} = trial;
const times = Array(100).fill().map(() => {
const ps = spawnSync(engine, ['-e', `
if (typeof require === 'undefined') require = load;
if (typeof console === 'undefined') console = {log: print};
var t1 = Date.now();
require('./build/packages/react/${build}');
var t2 = Date.now();
console.log(t2 - t1);
`], {
env: Object.assign({}, process.env, {NODE_ENV})
});
return parseInt(ps.stdout);
});
trial.mean = stats.mean(times);
trial.p90 = stats.percentile(times, 0.90);
trial.p95 = stats.percentile(times, 0.95);
});
console.log('| engine | build | avg / p90 (ms) |');
console.log('| ------ | ----- | -------------: |');
runs.forEach(({engine, build, NODE_ENV, mean, p90}) => {
console.log(
'| %s | %s | %s |',
engine,
NODE_ENV ? `${build} (${NODE_ENV})` : build,
`${mean.toFixed(2)} / ${p90}`
);
});
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