Run results for: array vs float32array performance test

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:123.0) Gecko/20100101 Firefox/123.0

Browser: Firefox 123

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

typedArray i/o

111K/s

array i/o

73K/s

typedArray i/o w convert back to array

12K/s

typedArray sort

12K/s

create arrays

12K/s

array sort

8K/s

create typed arrays

1K/s

create typed arrays in typed array

302/s

View exact numbers

Test name	Executions per second
✓ typedArray i/o	111,246 Ops/sec
array i/o	72,901 Ops/sec
typedArray i/o w convert back to array	11,961 Ops/sec
typedArray sort	11,936 Ops/sec
create arrays	11,557 Ops/sec
array sort	7,671 Ops/sec
create typed arrays	1,284 Ops/sec
create typed arrays in typed array	302 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]); }