Run results for: DataView vs TypedArray Float32 actually fixed

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/134.0.0.0 Safari/537.36

Browser: Chrome 134

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

array[i] = i;

467K/s

array[i] = i; 2

461K/s

view.setFloat32(i, i)

73K/s

view.setFloat32(i, i) 2

73K/s

View exact numbers

Test name	Executions per second
✓ array[i] = i;	466,958 Ops/sec
array[i] = i; 2	460,767 Ops/sec
view.setFloat32(i, i)	72,836 Ops/sec
view.setFloat32(i, i) 2	72,699 Ops/sec

Script Preparation code:

var buffer1 = new ArrayBuffer(1024 * Float32Array.BYTES_PER_ELEMENT);
var array = new Float32Array(buffer1);
var buffer2 = new ArrayBuffer(1024 * Float32Array.BYTES_PER_ELEMENT);
var view = new DataView(buffer2);

Tests:

array[i] = i;
for (let i = 0; i < 1024; i += 1) { if (i === 0) { array[i] = 1; } else { array[i] = array[i-1] + i;; } }
view.setFloat32(i, i)
for (let i = 0; i < 4096; i += 4) { if (i === 0) { view.setFloat32(i, 1); } else { view.setFloat32(i, view.getFloat32(i - 1) + i); } }
array[i] = i; 2
for (let i = 0; i < 1024; i += 1) { if (i === 0) { array[i] = 1; } else { array[i] = array[i-1] + i; } }
view.setFloat32(i, i) 2
for (let i = 0; i < 4096; i += 4) { if (i === 0) { view.setFloat32(i, 1); } else { view.setFloat32(i, view.getFloat32(i - 1) + i); } }