Compare Buffer and String

gistfile1.js

var Benchmark = require('benchmark');

var suite = new Benchmark.Suite;

var dataString = ['xxx', 'ssss', 'yyyyy', '1121212', 'aaaaa'];
var dataBuffer = [new Buffer('xxx'), new Buffer('ssss'), new Buffer('yyyyy'), new Buffer('1121212'), new Buffer('aaaaa')];

suite.add('Buffer#copy', function() {
  var offset = 0;
  dataBuffer.forEach(function(chunk) {
    var buffBuffer = new Buffer(24);
    chunk.copy(buffBuffer, offset);
    offset += chunk.length;
  })
})
  .add('String#copy', function() {
    var buffString = '';
    dataString.forEach(function(chunk) {
      buffString += chunk;
    })
  })
  .on('cycle', function(event, bench) {
    console.log(String(bench));
  })
  .on('complete', function() {
    console.log('Fastest is ' + this.filter('fastest').pluck('name'));
  })
// run async
  .run({ 'async': false });