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

Test name	Executions per second
array sort	7671.5 Ops/sec
typedArray sort	11936.4 Ops/sec
array i/o	72900.8 Ops/sec
typedArray i/o	111246.2 Ops/sec
typedArray i/o w convert back to array	11960.8 Ops/sec
create arrays	11556.9 Ops/sec
create typed arrays	1284.2 Ops/sec
create typed arrays in typed array	302.0 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]); }

Run results for: array vs float32array performance test

array sort

typedArray sort

array i/o

typedArray i/o

typedArray i/o w convert back to array

create arrays

create typed arrays

create typed arrays in typed array