Benchmark: Array vs Float64Array performance

Script Preparation code:

const elementCount = 1_000_000;
const array = new Array(elementCount);
const f64array = new Float64Array(elementCount);
for (let i = 0; i < elementCount; i++) {
  const value = Math.random();
  array[i] = value;
  f64array[i] = value;
}
const comparator = (a, b) => a - b;

Tests:

Array.prototype.sort
array.sort(comparator);
Float64Array.prototype.sort
f64array.sort();

Historical Performance Data aggregated from 6 community runs

Desktop Results:

Firefox 6 runs

Float64Array.prototype.sort

513/s

Array.prototype.sort

52/s

Fastest: Float64Array.prototype.sort (9.8x faster)

View exact numbers

✓ Float64Array.prototype.sort: 513 ops/sec
• Array.prototype.sort: 52 ops/sec

Results show median performance across all community submissions. Run this benchmark yourself to verify on your device.

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Array.prototype.sort
Float64Array.prototype.sort

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 8 months ago)

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:145.0) Gecko/20100101 Firefox/145.0

Browser/OS: Firefox 145 on Linux

View result in a separate tab

Float64Array.prototype.sort

46/s

Array.prototype.sort

26/s

View exact numbers

Test name	Executions per second
✓ Float64Array.prototype.sort	46 Ops/sec
Array.prototype.sort	26 Ops/sec

Array vs Float64Array performance (version: 1)

Comparing performance of: `Array.prototype.sort vs Float64Array.prototype.sort`

Created: one year ago by: Registered User

Go to the latest result

Array.prototype.sort

Float64Array.prototype.sort

Historical Performance Data aggregated from 6 community runs

Desktop Results:

Firefox 6 runs

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Array vs Float64Array performance (version: 1)

Comparing performance of: Array.prototype.sort vs Float64Array.prototype.sort

Created: one year ago by: Registered User

Go to the latest result

Array.prototype.sort

Float64Array.prototype.sort

Historical Performance Data aggregated from 6 community runs

Desktop Results:

Firefox 6 runs

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Related benchmarks

Comparing performance of: `Array.prototype.sort vs Float64Array.prototype.sort`