file-io-is-fast.js

#!/usr/bin/env node

var fs = require('fs')
var rimraf = require('rimraf')

fs.mkdirSync('x')

var string = ''
for (var i = 0; i < 100; i++) {
  string += '1234567890'
}
var buf = new Buffer(string)

console.time('write')
for (i = 0; i < 10000; i++) {
  fs.writeFileSync('x/' + i, buf)
}
console.timeEnd('write')

rimraf.sync('x')


// on my system: 25µs to write each 1KB file