Run results for: Dataview vs Uint8Array - read short

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.0.0 Safari/537.36

Browser: Chrome 121

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

DataView

36K/s

Uint8Array

24K/s

View exact numbers

Test name	Executions per second
✓ DataView	35,749 Ops/sec
Uint8Array	24,152 Ops/sec

Script Preparation code:

var size = 1024;
var buffer = new ArrayBuffer(size);
var bytes = new Uint8Array(buffer);
var dv = new DataView(buffer);

for (var i = 0; i < size; i++)
  dv.setUint8(i, Math.ceil(Math.random() * 255));

Tests:

DataView
for (var i = 0; i < size; i+=2) dv.getUint16(i);
Uint8Array
for (var i = 0; i < size; i+=2) bytes.subarray(i, i + 2);