UUID generators perf (v2)

Revision 2 of this benchmark created on

Preparation HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/crypto-js/3.1.9-1/crypto-js.js"></script>

Setup

function murmurhash4_32_gc(key, seed) {
  const remainder = key.length & 3; // key.length % 4
  const bytes = key.length - remainder;
  const c1 = 0xcc9e2d51;
  const c2 = 0x1b873593;
  const len = key.length;
  let h1 = seed;

  for (let i = 0; i < bytes; i += 4) {
    let k1 =
      (key.charCodeAt(i) & 0xff) |
      ((key.charCodeAt(i + 1) & 0xff) << 8) |
      ((key.charCodeAt(i + 2) & 0xff) << 16) |
      ((key.charCodeAt(i + 3) & 0xff) << 24);

    k1 = (k1 * c1) & 0xffffffff;
    k1 = (k1 << 15) | (k1 >>> 17);
    k1 = (k1 * c2) & 0xffffffff;

    h1 ^= k1;
    h1 = (h1 << 13) | (h1 >>> 19);
    h1 = (((h1 & 0xffff) * 5) + 0xe654) & 0xffffffff;
    h1 ^= h1 >>> 16;
    h1 = (((h1 & 0xffff) * 0x85ebca6b) + 0xc2b2ae35) & 0xffffffff;
  }

  let k1 = 0;

  switch (remainder) {
    case 3:
      k1 ^= (key.charCodeAt(bytes + 2) & 0xff) << 16;
    case 2:
      k1 ^= (key.charCodeAt(bytes + 1) & 0xff) << 8;
    case 1:
      k1 ^= (key.charCodeAt(bytes) & 0xff);

      k1 = (k1 * c1) & 0xffffffff;
      k1 = (k1 << 15) | (k1 >>> 17);
      k1 = (k1 * c2) & 0xffffffff;

      h1 ^= k1;
  }

  h1 ^= len;
  h1 ^= h1 >>> 16;
  h1 = (h1 * 0x85ebca6b) & 0xffffffff;
  h1 ^= h1 >>> 13;
  h1 = (h1 * 0xc2b2ae35) & 0xffffffff;
  h1 ^= h1 >>> 16;

  return h1 >>> 0;
}

function murmurhash3_32_gc(key, seed) {
	var remainder, bytes, h1, h1b, c1, c1b, c2, c2b, k1, i;
	
	remainder = key.length & 3; // key.length % 4
	bytes = key.length - remainder;
	h1 = seed;
	c1 = 0xcc9e2d51;
	c2 = 0x1b873593;
	i = 0;
	
	while (i < bytes) {
	  	k1 = 
	  	  ((key.charCodeAt(i) & 0xff)) |
	  	  ((key.charCodeAt(++i) & 0xff) << 8) |
	  	  ((key.charCodeAt(++i) & 0xff) << 16) |
	  	  ((key.charCodeAt(++i) & 0xff) << 24);
		++i;
		
		k1 = ((((k1 & 0xffff) * c1) + ((((k1 >>> 16) * c1) & 0xffff) << 16))) & 0xffffffff;
		k1 = (k1 << 15) | (k1 >>> 17);
		k1 = ((((k1 & 0xffff) * c2) + ((((k1 >>> 16) * c2) & 0xffff) << 16))) & 0xffffffff;

		h1 ^= k1;
        h1 = (h1 << 13) | (h1 >>> 19);
		h1b = ((((h1 & 0xffff) * 5) + ((((h1 >>> 16) * 5) & 0xffff) << 16))) & 0xffffffff;
		h1 = (((h1b & 0xffff) + 0x6b64) + ((((h1b >>> 16) + 0xe654) & 0xffff) << 16));
	}
	
	k1 = 0;
	
	switch (remainder) {
		case 3: k1 ^= (key.charCodeAt(i + 2) & 0xff) << 16;
		case 2: k1 ^= (key.charCodeAt(i + 1) & 0xff) << 8;
		case 1: k1 ^= (key.charCodeAt(i) & 0xff);
		
		k1 = (((k1 & 0xffff) * c1) + ((((k1 >>> 16) * c1) & 0xffff) << 16)) & 0xffffffff;
		k1 = (k1 << 15) | (k1 >>> 17);
		k1 = (((k1 & 0xffff) * c2) + ((((k1 >>> 16) * c2) & 0xffff) << 16)) & 0xffffffff;
		h1 ^= k1;
	}
	
	h1 ^= key.length;

	h1 ^= h1 >>> 16;
	h1 = (((h1 & 0xffff) * 0x85ebca6b) + ((((h1 >>> 16) * 0x85ebca6b) & 0xffff) << 16)) & 0xffffffff;
	h1 ^= h1 >>> 13;
	h1 = ((((h1 & 0xffff) * 0xc2b2ae35) + ((((h1 >>> 16) * 0xc2b2ae35) & 0xffff) << 16))) & 0xffffffff;
	h1 ^= h1 >>> 16;

	return h1 >>> 0;
}

// Higher collision rate
function murmurhash5_32_gc(key, seed) {
  const remainder = key.length & 3; // key.length % 4
  const bytes = key.length - remainder;
  const c1 = 0xcc9e2d51;
  const c2 = 0x1b873593;
  const len = key.length;
  let h1 = seed;

  for (let i = 0; i < bytes; i += 4) {
    let k1 =
      (key.charCodeAt(i) & 0xff) |
      ((key.charCodeAt(i + 1) & 0xff) << 8) |
      ((key.charCodeAt(i + 2) & 0xff) << 16) |
      ((key.charCodeAt(i + 3) & 0xff) << 24);

    k1 *= c1;
    k1 ^= k1 >>> 16;
    k1 *= c2;

    h1 ^= k1;
    h1 = (h1 << 13) | (h1 >>> 19);
    h1 = ((h1 & 0xffff) * 5 + 0xe654) & 0xffffffff;
  }

  let k1 = 0;

  switch (remainder) {
    case 3:
      k1 ^= (key.charCodeAt(bytes + 2) & 0xff) << 16;
    case 2:
      k1 ^= (key.charCodeAt(bytes + 1) & 0xff) << 8;
    case 1:
      k1 ^= key.charCodeAt(bytes) & 0xff;

      k1 *= c1;
      k1 ^= k1 >>> 16;
      k1 *= c2;

      h1 ^= k1;
  }

  h1 ^= len;
  h1 ^= h1 >>> 16;
  h1 *= 0x85ebca6b;
  h1 ^= h1 >>> 13;
  h1 *= 0xc2b2ae35;
  h1 ^= h1 >>> 16;

  return h1 >>> 0;
}

const data = 'ajkhdkjahdjkahskjdhakhdjahdjkashdjkahdj';
const seed = 0x20;

Test runner

Ready to run.

Testing in
TestOps/sec
MD5
CryptoJS.MD5(data).toString();
ready
MM 3
murmurhash3_32_gc(data, seed)
ready
MM 4
murmurhash4_32_gc(data, seed)
ready
mm5
murmurhash5_32_gc(data,seed)
ready

Revisions

You can edit these tests or add more tests to this page by appending /edit to the URL.