Benchmark: Uint(8/16/32)Array and BigInt64Array comparison performance

Script Preparation code:

var size = 8 * 40;
var srcBuf8 = new ArrayBuffer(size);
var srcBufPtr8 = new Uint8Array(srcBuf8);
var srcBuf16 = new ArrayBuffer(size*2);
var srcBufPtr16 = new Uint16Array(srcBuf16);
var srcBuf32 = new ArrayBuffer(size*4);
var srcBufPtr32 = new Uint32Array(srcBuf32);
var srcBuf64 = new ArrayBuffer(size*8);
var srcBufPtr64 = new BigUint64Array(srcBuf64);

for (let i = 0; i < size; i++) {
    srcBufPtr8[i] = 100 * Math.random();
}
for (let i = 0; i < size; i++) {
    srcBufPtr16[i] = srcBufPtr8[i];
}
for (let i = 0; i < size; i++) {
    srcBufPtr32[i] = srcBufPtr8[i];
}
for (let i = 0; i < size; i++) {
    srcBufPtr64[i] = BigInt(srcBufPtr8[i]);
}

Tests:

Uint8Array increment
let smallerCount = 0; for (let i = 0; i < (size-1); i++) { if (srcBufPtr8[i] < srcBufPtr8[i+1]) { smallerCount++; } }
Uint16Array increment
let smallerCount = 0; for (let i = 0; i < (size-1); i++) { if (srcBufPtr16[i] < srcBufPtr16[i+1]) { smallerCount++; } }
Uint32Array increment
let smallerCount = 0; for (let i = 0; i < (size-1); i++) { if (srcBufPtr32[i] < srcBufPtr32[i+1]) { smallerCount++; } }
BigUint64Array increment
let smallerCount = 0; for (let i = 0; i < (size-1); i++) { if (srcBufPtr64[i] < srcBufPtr64[i+1]) { smallerCount++; } }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Uint8Array increment
Uint16Array increment
Uint32Array increment
BigUint64Array increment

Fastest: N/A

Slowest: N/A

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Latest run results:

Run details: (Test run date: 11 months ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.0.0 Safari/537.36

Browser/OS: Chrome 114 on Windows

View result in a separate tab

Test name	Executions per second
Uint8Array increment	21178.4 Ops/sec
Uint16Array increment	21224.2 Ops/sec
Uint32Array increment	21289.6 Ops/sec
BigUint64Array increment	21322.2 Ops/sec

Uint(8/16/32)Array and BigInt64Array comparison performance (version: 0)

Uint(8/16/32)Array and BigInt64Array comparison performance

Comparing performance of: Uint8Array increment vs Uint16Array increment vs Uint32Array increment vs BigUint64Array increment

Created: 11 months ago by: Guest

Jump to the latest result

Uint8Array increment

Uint16Array increment

Uint32Array increment

BigUint64Array increment

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A