Using benchmark.js instead of perfy

results.txt

λ node index.js
normal path time x 556 ops/sec ±9.22% (46 runs sampled)
UNC path time x 398 ops/sec ±10.97% (38 runs sampled)
Fastest is normal path time

suite.js

'use strict';

const path = require('path')
const fs = require('fs')

const Benchmark = require('benchmark');

const normalPath = path.join(__dirname, 'testfile.txt')
const uncPath = `\\\\?\\${normalPath}`

function readWriteFile(path) {
  fs.writeFileSync(path, 'Hello Node.js', 'utf8');
  const file = fs.readFileSync(path, { encoding: 'utf8' })
}

var suite = new Benchmark.Suite;

// add tests
suite.add('normal path time', function() {
  readWriteFile(normalPath)
})
.add('UNC path time', function() {
  readWriteFile(uncPath)
})
// add listeners
.on('cycle', function(event) {
  console.log(String(event.target));
})
.on('complete', function() {
  console.log('Fastest is ' + this.filter('fastest').map('name'));
})
// run async
.run({ 'async': true });