Run results for: array vs float32array performance test

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36

Browser: Chrome 131

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

typedArray i/o

42K/s

array i/o

40K/s

create arrays

31K/s

typedArray sort

16K/s

array sort

8K/s

typedArray i/o w convert back to array

6K/s

create typed arrays

1K/s

create typed arrays in typed array

464/s

View exact numbers

Test name	Executions per second
✓ typedArray i/o	41,901 Ops/sec
array i/o	40,491 Ops/sec
create arrays	30,854 Ops/sec
typedArray sort	15,908 Ops/sec
array sort	8,009 Ops/sec
typedArray i/o w convert back to array	5,700 Ops/sec
create typed arrays	1,390 Ops/sec
create typed arrays in typed array	464 Ops/sec

Script Preparation code:

function getRandomInt(max) {
    return Math.floor(Math.random() * max);
}

var a = [...new Array(10000)].map(_ => getRandomInt(1000000));
var ta = (new Float32Array(10000)).map(_ => getRandomInt(1000000));

Tests:

array sort
a.sort();
typedArray sort
ta.sort();
array i/o
for (let i = 0; i < 10000; ++i) { a[i] = a[i] + 1; }
typedArray i/o
for (let i = 0; i < 10000; ++i) { ta[i] = ta[i] + 1; }
typedArray i/o w convert back to array
for (let i = 0; i < 10000; ++i) { ta[i] = ta[i] + 1; } let tb = Array.from(ta);
create arrays
const a = []; for (let i = 0; i < 10000; ++i) { a.push([i]); }
create typed arrays
const a = []; for (let i = 0; i < 10000; ++i) { a.push(new Float32Array([i])); }
create typed arrays in typed array
const a = new Float32Array(10000); for (let i = 0; i < 10000; ++i) { a[i] = new Float32Array([i]); }