Benchmark: Dataview vs Custom - Read uint32

Script Preparation code:

    var totalValues = 1024 * 1024;
	var valueSize = 4;
	var totalBytes = totalValues * valueSize;
	var buffer = new ArrayBuffer(totalBytes);
	// fill
	var dv = new DataView(buffer);
	for (i=0; i<totalBytes; i+=valueSize) {
	   num = Math.floor(Math.random()*Math.pow(2,8*valueSize));
	   dv.setUint32(i,num,true);
	}
	
	function readUnsignedInt(stream){
		var l=stream[seek]+stream[seek+1]*256+stream[seek+2]*65536+stream[seek+3]*16777216;
		seek=seek+4;
		return l;
	}
	
	var seek=0;
	var stream = new Uint8Array(buffer);

Tests:

Dataview
for (i=0; i<totalBytes; i+=valueSize) { num = dv.getUint32(i,true); }
Custom
for (i=0; i<totalBytes; i+=valueSize) { num = readUnsignedInt(stream); }
Basecase - Just loop
for (i=0; i<totalBytes; i+=valueSize) { }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Dataview
Custom
Basecase - Just loop

Fastest: N/A

Slowest: N/A

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Latest run results:

Run details: (Test run date: 5 years ago)

User agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/66.0.3359.139 Safari/537.36

Browser/OS: Chrome 66 on Windows 7

View result in a separate tab

Test name	Executions per second
Dataview	2.1 Ops/sec
Custom	1.0 Ops/sec
Basecase - Just loop	6.5 Ops/sec

Dataview vs Custom - Read uint32 (version: 2)

Comparing performance of: Dataview vs Custom vs Basecase - Just loop

Created: 6 years ago by: Registered User

Jump to the latest result

Dataview

Custom

Basecase - Just loop

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A