Benchmark: Uint(8/16/32)Array.set performance compare

Script Preparation code:

var size = 5000;
var srcBuf = new ArrayBuffer(size);
var srcBufPtr8 = new Uint8Array(srcBuf);
var srcBufPtr16 = new Uint16Array(srcBuf);
var srcBufPtr32 = new Uint32Array(srcBuf);
var srcBufPtr64 = new BigUint64Array(srcBuf);
var destBuf = new ArrayBuffer(size);
var destBufPtr8 = new Uint8Array(destBuf);
var destBufPtr16 = new Uint16Array(destBuf);
var destBufPtr32 = new Uint32Array(destBuf);
var destBufPtr64 = new BigUint64Array(destBuf);

for (let i = 0; i < size; i++) {
	srcBufPtr8[i] = 100*Math.random();
}

Tests:

Uint8Array.set
destBufPtr8.set(srcBufPtr8);
Uint16Array.set
destBufPtr16.set(srcBufPtr16);
Uint32Array.set
destBufPtr32.set(srcBufPtr32);
BigUint64Array.set
destBufPtr64.set(srcBufPtr64);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Uint8Array.set
Uint16Array.set
Uint32Array.set
BigUint64Array.set

Fastest: N/A

Slowest: N/A

ⓘ Get performance results from real users on your website with Request Metrics.

Website Performance Monitoring by Request Metrics

Latest run results:

Run details: (Test run date: one month ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36

Browser/OS: Chrome 123 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
Uint8Array.set	7694830.0 Ops/sec
Uint16Array.set	7718039.0 Ops/sec
Uint32Array.set	7710853.0 Ops/sec
BigUint64Array.set	7678409.0 Ops/sec

Uint(8/16/32)Array.set performance compare (version: 0)

Comparing performance of: Uint8Array.set vs Uint16Array.set vs Uint32Array.set vs BigUint64Array.set

Created: 3 years ago by: Guest

Jump to the latest result

Uint8Array.set

Uint16Array.set

Uint32Array.set

BigUint64Array.set

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A