Benchmark: uint8array 8 extract vs uint8 10 extract

Script Preparation code:


function generateRandomUint8Array(length) {
    const array = new Uint8Array(length);
    window.crypto.getRandomValues(array);
    return array;
}

function readInt64LE(bytes, offset) {
    return (bytes[offset] | (bytes[offset + 1] << 8) | (bytes[offset + 2] << 16) | (bytes[offset + 3] << 24) | (bytes[offset + 4] << 32) | (bytes[offset + 5] << 40)) >>> 0;
}

Tests:

10 byte
// Example usage: const bytes = generateRandomUint8Array(120); let sp = [] for (let i = 0; i < 8; ++i) { let id = readInt64LE(bytes, (i * 10) + 8); // imageset id [8] let imgIdx0 = bytes[(i * 10) + 16]; // image index 0 [9] let imgIdx1 = bytes[(i * 10) + 17]; // image index 1 [10] sp.push([id, imgIdx0, imgIdx1]) }
8 byte
// Example usage: const bytes = generateRandomUint8Array(120); let sp = [] for (let i = 0; i < 8; ++i) { let id = readInt64LE(bytes, (i << 3) + 8); // imageset id [6] let imgIdx0 = bytes[(i << 3) + 14]; // image index 0 [7] let imgIdx1 = bytes[(i << 3) + 15]; // image index 1 [8] sp.push([id, imgIdx0, imgIdx1]) }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
10 byte
8 byte

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: 5 months ago)

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 16_1_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/16.1 Mobile/15E148 Safari/604.1

Browser/OS: Mobile Safari 16 on iOS 16.1.1

View result in a separate tab

Test name	Executions per second
10 byte	611834.0 Ops/sec
8 byte	566526.2 Ops/sec

uint8array 8 extract vs uint8 10 extract (version: 0)

Comparing performance of: 10 byte vs 8 byte

Created: 5 months ago by: Registered User

Jump to the latest result

10 byte

8 byte

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A