Run results for: DataView vs Uint32Array

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36

Browser: Chrome 123

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 8 months ago

Test name	Executions per second
DataView	14014.7 Ops/sec
Uint32Array loop	15681.5 Ops/sec
Uint32Array set	968071.1 Ops/sec

Script Preparation code:

var size = 4 * 1000;
var buf = new ArrayBuffer(size);
var view = new DataView(buf);
var u32view = new Uint32Array(buf);

var data = [];

for (let i = 0; i < size/4; i++) {
	data[i] = 10000*Math.random();
}

Tests:

DataView
for (let i = 0, len = size/4; i < len; i++) { view.setUint32(i*4, data[i]); }
Uint32Array loop
for (let i = 0, len = size/4; i < len; i++) { u32view[i] = data[i]; }
Uint32Array set
u32view.set(data, 0)

Run results for: DataView vs Uint32Array

DataView vs Uint32Array

DataView

Uint32Array loop

Uint32Array set