Run results for: DataView vs TypedArray Float64

Run details:

User agent: Mozilla/5.0 (Android 15; Mobile; rv:137.0) Gecko/137.0 Firefox/137.0

Browser: Firefox Mobile 137

Operating system: Android

Device Platform: Mobile

Date tested: one year ago

view.setFloat64(i, i)

565K/s

view.setFloat64(i, i) 2

564K/s

array[i] = i;

344K/s

array[i] = i; 2

343K/s

View exact numbers

Test name	Executions per second
✓ view.setFloat64(i, i)	564,537 Ops/sec
view.setFloat64(i, i) 2	563,877 Ops/sec
array[i] = i;	344,437 Ops/sec
array[i] = i; 2	342,987 Ops/sec

Script Preparation code:

var buffer1 = new ArrayBuffer(1024 * Float64Array.BYTES_PER_ELEMENT);
var array = new Float64Array(buffer1);
var buffer2 = new ArrayBuffer(1024 * Float64Array.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.setFloat64(i, i)
for (let i = 0; i < 1024; i += 4) { if (i === 0) { view.setFloat64(i, 1); } else { view.setFloat64(i, view.getFloat64(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.setFloat64(i, i) 2
for (let i = 0; i < 1024; i += 4) { if (i === 0) { view.setFloat64(i, 1); } else { view.setFloat64(i, view.getFloat64(i - 1) + i); } }