Created
January 22, 2019 03:01
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Measure Node.js File IO in terms of copy and write
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| const fs = require('fs'); | |
| const path = require('path'); | |
| const rimraf = require('rimraf'); | |
| const ProgressBar = require('progress'); | |
| const readFrom = path.join(__dirname, './test.json'); | |
| const file = fs.readFileSync(readFrom); | |
| const getRandomNumber = (number = 1000000) => Math.floor(Math.random() * number); | |
| const LENGTH = 10000; | |
| const measure = (label, callback) => { | |
| console.time(label); | |
| var bar = new ProgressBar(' measuring ":label" [:bar] :percent :etas', { | |
| complete: '=', | |
| incomplete: ' ', | |
| width: 40, | |
| total: LENGTH | |
| }); | |
| Array.from({ length: LENGTH }).map(() => { | |
| callback(); | |
| bar.tick({ label }); | |
| }) | |
| console.timeEnd(label); | |
| } | |
| measure('write', () => { | |
| const writeTo = path.join(__dirname, `./test.json.write.${getRandomNumber()}`); | |
| fs.writeFileSync(writeTo, file, 'utf8'); | |
| }); | |
| measure('copy', () => { | |
| const copyTo = path.join(__dirname, `./test.json.copy.${getRandomNumber()}`); | |
| fs.copyFileSync(readFrom, copyTo); | |
| }); | |
| rimraf(path.join(__dirname, './test.json.write.*'), () => {}) | |
| rimraf(path.join(__dirname, './test.json.copy.*'), () => {}) |
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test.json generated from json-generator