Run results for: Sorting small integers: Array vs various TypedArray types performance

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/132.0.0.0 Safari/537.36

Browser: Chrome 132

Operating system: Linux

Device Platform: Desktop

Date tested: one year ago

Int32Array.prototype.sort

349/s

Array.prototype.sort

134/s

Float64Array.prototype.sort

56/s

Float32Array.prototype.sort

49/s

View exact numbers

Test name	Executions per second
✓ Int32Array.prototype.sort	349 Ops/sec
Array.prototype.sort	134 Ops/sec
Float64Array.prototype.sort	56 Ops/sec
Float32Array.prototype.sort	49 Ops/sec

Script Preparation code:

const ELEMENT_COUNT = 1_000_000;
const INT_VALUE_MIN = 0;
const INT_VALUE_MAX = 2 ** 15 - 1;

const array = new Array(ELEMENT_COUNT);
const int16array = new Int16Array(ELEMENT_COUNT);
const uint16array = new Uint16Array(ELEMENT_COUNT);
const int32array = new Int32Array(ELEMENT_COUNT);
const uint32array = new Uint32Array(ELEMENT_COUNT);
const float32array = new Float32Array(ELEMENT_COUNT);
const float64array = new Float64Array(ELEMENT_COUNT);
const bigint64array = new BigInt64Array(ELEMENT_COUNT);
const biguint64array = new BigUint64Array(ELEMENT_COUNT);

for (let i = 0; i < ELEMENT_COUNT; i++) {
  const value = INT_VALUE_MIN + Math.floor(Math.random() * INT_VALUE_MAX);

  array[i] = value;
  int16array[i] = value;
  uint16array[i] = value;
  int32array[i] = value;
  uint32array[i] = value;
  float32array[i] = value;
  float64array[i] = value;
  bigint64array[i] = BigInt(value);
  biguint64array[i] = BigInt(value);
}

const comparator = (a, b) => a - b;

Tests:

Array.prototype.sort
array.sort(comparator);
Int16Array.prototype.sort
int16array.sort();
Uint16Array.prototype.sort
uint16array.sort();
Int32Array.prototype.sort
int32array.sort();
Uint32Array.prototype.sort
uint32array.sort();
Float32Array.prototype.sort
float32array.sort();
Float64Array.prototype.sort
float64array.sort();
BigInt64Array.prototype.sort
bigint64array.sort();
BigUint64Array.prototype.sort
biguint64array.sort();

Run results for: Sorting small integers: Array vs various TypedArray types performance

Array.prototype.sort

Int16Array.prototype.sort

Uint16Array.prototype.sort

Int32Array.prototype.sort

Uint32Array.prototype.sort

Float32Array.prototype.sort

Float64Array.prototype.sort

BigInt64Array.prototype.sort

BigUint64Array.prototype.sort