co benchmark for thunk and promise

bench.js

var benchmarks = require('beautify-benchmark');
var Benchmark = require('benchmark');
var thunkify = require('thunkify');
var zlib = require('zlib');
var co = require('co');
var fs = require('fs');

var gzipPromise = require('mz/zlib').gzip;
var gzipThunk = thunkify(zlib.gzip);
var fsPromise = require('mz/fs');
var fsThunk = require('co-fs');

var suite = new Benchmark.Suite();

var file = require('path').join(__dirname, 'package.json');
var content = fs.readFileSync(file);

suite
.add('promise fs.stat', function () {
  co(function* () {
    yield fsPromise.stat(file)
  })();
})
.add('thunk fs.stat', function () {
  co(function* () {
    yield fsThunk.stat(file)
  })();
})
.add('promise fs.exists', function () {
  co(function* () {
    yield fsPromise.exists(file)
  })();
})
.add('thunk fs.exists', function () {
  co(function* () {
    yield fsThunk.exists(file)
  })();
})
.add('promise gzip', function () {
  co(function* () {
    yield gzipPromise(content);
  })();
})
.add('thunk gzip', function () {
  co(function* () {
    yield gzipThunk(content);
  })();
})
.on('cycle', function(event) {
  benchmarks.add(event.target);
})
.on('start', function(event) {
  console.log('\n  node version: %s, date: %s\n  Starting...', process.version, Date());
})
.on('complete', function done() {
  benchmarks.log();
})
.run({ 'async': true });

// with bluebird

  // node version: v0.11.13, date: Sun Aug 24 2014 00:18:24 GMT+0800 (CST)
  // Starting...
  // 6 tests completed.

  // promise fs.stat   x  85,529 ops/sec ±3.31% (72 runs sampled)
  // thunk fs.stat     x 100,951 ops/sec ±3.05% (74 runs sampled)
  // promise fs.exists x  93,367 ops/sec ±2.59% (80 runs sampled)
  // thunk fs.exists   x 121,395 ops/sec ±2.75% (75 runs sampled)
  // promise gzip      x  16,335 ops/sec ±4.46% (76 runs sampled)
  // thunk gzip        x  17,321 ops/sec ±4.44% (81 runs sampled)

// with native promise

  // node version: v0.11.13, date: Sun Aug 24 2014 00:14:06 GMT+0800 (CST)
  // Starting...
  // 6 tests completed.

  // promise fs.stat   x  67,484 ops/sec ±2.98% (78 runs sampled)
  // thunk fs.stat     x 100,174 ops/sec ±2.92% (81 runs sampled)
  // promise fs.exists x  74,958 ops/sec ±3.16% (80 runs sampled)
  // thunk fs.exists   x 116,378 ops/sec ±2.76% (76 runs sampled)
  // promise gzip      x  15,609 ops/sec ±4.73% (68 runs sampled)
  // thunk gzip        x  18,871 ops/sec ±3.96% (73 runs sampled)

package.json

{
  "name": "co-bench",
  "version": "0.0.0",
  "description": "co bench for promise and thunk",
  "main": "bench.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "author": "dead_horse <[email protected]>",
  "license": "MIT",
  "devDependencies": {
    "beautify-benchmark": "~0.2.4",
    "benchmark": "~1.0.0",
    "bluebird": "~2.3.1",
    "co": "~3.1.0",
    "co-fs": "~1.2.0",
    "mz": "~1.0.1",
    "thunkify": "~2.1.2"
  }
}