MeasureThat.net

Run results for: DataView vs Uint8Array by bytes vs Native Array

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Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/90.0.4430.93 Safari/537.36
Chrome 90
Windows
Desktop
3 years ago
Test name Executions per second
DataView 12911557.0 Ops/sec
Uint8Array by byte 12899118.0 Ops/sec
Uint8Array with set 736197.0 Ops/sec
Native Array 12828039.0 Ops/sec
Script Preparation code:
​x
 
var size = 0xFF;
var buf = new ArrayBuffer(size);
var view = new DataView(buf);
var byte = new Uint8Array(buf);
​
var data = [];
var nativeArr = new Array(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(data, 0);

  • Native Array

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