Run results for: read write ArrayBuffer: DataView vs Float64Array.set v2

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Safari/537.36

Browser: Chrome 126

Operating system: Windows

Device Platform: Desktop

Date tested: 4 months ago

Test name	Executions per second
DataView	172.5 Ops/sec
Float64Array	174.5 Ops/sec
Float32Array	174.2 Ops/sec
DataView 32	172.7 Ops/sec

Script Preparation code:

var size = 50000;
var buf = new ArrayBuffer(size*8);
var view = new DataView(buf);
var buf2 = new ArrayBuffer(size*4);
var view2 = new DataView(buf2);
var data = new Float64Array(size);
var data2 = new Float32Array(size);

Tests:

DataView
for (let i=0; i < size; i++) { view.setFloat64(i*8, 992.2258); } for (let i=0; i < size; i++) { const res = view.getFloat64(i*8); }
Float64Array
for (let i=0; i < size; i++) { data[i] = 992.2258; } for (let i=0; i < size; i++) { const res = data[i]; }
Float32Array
for (let i=0; i < size; i++) { data[i] = 992.2258; } for (let i=0; i < size; i++) { const res = data[i]; }
DataView 32
for (let i=0; i < size; i++) { view2.setFloat32(i*4, 992.2258); } for (let i=0; i < size; i++) { const res = view2.getFloat32(i*4); }

Run results for: read write ArrayBuffer: DataView vs Float64Array.set v2

DataView

Float64Array

Float32Array

DataView 32