MeasureThat.net

Run results for: ArrayBuffer Copy Benchmark (2)

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Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/96.0.4664.93 Safari/537.36
Chrome 96
Windows
Desktop
3 years ago
Test name Executions per second
DataView 11159491.0 Ops/sec
Uint8Array by byte 11137710.0 Ops/sec
Uint8Array with set 5112016.0 Ops/sec
with Float64Array 493156.8 Ops/sec
Script Preparation code:
​x
 
var size = 0xFFFF;
var buf = new ArrayBuffer(size);
var view = new DataView(buf);
var byte = new Uint8Array(buf);
​
var data = new Uint8Array(size);
​
for (let i = 0; i < size; i++) {
    data[i] = 100*Math.random();
}
Tests:

  • DataView

     
    for (let i; i < size; i++) {
        view.setUint8(i, data[i]);
    }

  • Uint8Array by byte

     
    for (let i; i < size; i++) {
        byte[i] = data[i];
    }

  • Uint8Array with set

     
    byte.set(buf);

  • with Float64Array

     
    (new Float64Array(buf, 0, size/8))
          .set(new Float64Array(data.buffer, 0, size/8));