Object.setPrototypeOf vs Object.create benchmark test

results

Iteration(s):            0
==================================
Object.create:           0
Object.setPrototypeOf:   0

Iteration(s):            1
==================================
Object.create:           0
Object.setPrototypeOf:   0.04

Iteration(s):            2
==================================
Object.create:           0
Object.setPrototypeOf:   0

Iteration(s):            5
==================================
Object.create:           0
Object.setPrototypeOf:   0

Iteration(s):            100
==================================
Object.create:           0
Object.setPrototypeOf:   0

Iteration(s):            1000
==================================
Object.create:           0.04
Object.setPrototypeOf:   0.04

Iteration(s):            10000
==================================
Object.create:           0.16
Object.setPrototypeOf:   0.2

Iteration(s):            100000
==================================
Object.create:           1.56
Object.setPrototypeOf:   1.44

Iteration(s):            1000000
==================================
Object.create:           13
Object.setPrototypeOf:   11.8

Iteration(s):            10000000
==================================
Object.create:           89.72
Object.setPrototypeOf:   71.88

Iteration(s):            25000000
==================================
Object.create:           168.4
Object.setPrototypeOf:   178.8

Iteration(s):            50000000
==================================
Object.create:           339.2
Object.setPrototypeOf:   357.44

Iteration(s):            75000000
==================================
Object.create:           503
Object.setPrototypeOf:   535.72

Iteration(s):            100000000
==================================
Object.create:           667.88
Object.setPrototypeOf:   708.44

test.js

function A() {
  var subA = Object.create(A.prototype);

  return subA;
}

A.prototype.yes = function () { return true; };

function B() {
  var subB = {};

  Object.setPrototypeOf(subB, B.prototype);

  return subB;
}

B.prototype.yes = function () { return true; };

var runs = 25;
var iterations = [0, 1, 2, 5, 10e1, 10e2, 10e3, 10e4, 10e5, 10e6, 25e6, 50e6, 75e6, 10e7];
var results = {};

iterations.forEach(function (iterate) {
  var i;
  var start;

  if (!results[iterate]) {
    results[iterate] = { a: 0, b: 0 };
  }

  start = new Date();

  for(i = 0; i < iterate; i++) {
    var a = new A();
    if (a.yes() !== true) {
      throw new Error('incorrect output @ ' + i);
    }
  }

  results[iterate].a += new Date() - start;

  start = new Date();

  for(i = 0; i < iterate; i++) {
    var b = new B();
    if (b.yes() !== true) {
      throw new Error('incorrect output @ ' + i);
    }
  }

  results[iterate].b += new Date() - start;
});

iterations.forEach(function (iterate) {
  var a = results[iterate].a / runs;
  var b = results[iterate].b / runs;

  console.log('Iteration(s):           ', iterate);
  console.log('==================================');
  console.log('Object.create:          ', a);
  console.log('Object.setPrototypeOf:  ', b);
  console.log('');
});

node 8.9.1 results:

Iteration(s):            100000000
==================================
Object.create:           46.56
Object.setPrototypeOf:   353.4

Chrome 59.0.3071.104 results:

Iteration(s):            100000000
==================================
Object.create:           46.36
Object.setPrototypeOf:   326.56