Benchmark: slice vs subarray vs ArrayBuffer copy

Script Preparation code:

var data = [1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9];
var f32 = new Float32Array(data);

Tests:

subarray direct
var copy = f32.subarray(10, 16);
slice direct
var copy = f32.slice(10, 16);
ArrayBuffer copy
var copy = new Float32Array(f32.buffer, 10*4, 6);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
subarray direct
slice direct
ArrayBuffer copy

Fastest: N/A

Slowest: N/A

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Latest run results:

Run details: (Test run date: 24 days ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/129.0.0.0 Safari/537.36 Edg/129.0.0.0

Browser/OS: Chrome 129 on Windows

View result in a separate tab

Test name	Executions per second
subarray direct	6522495.0 Ops/sec
slice direct	6380646.0 Ops/sec
ArrayBuffer copy	3564905.0 Ops/sec

slice vs subarray vs ArrayBuffer copy (version: 0)

Comparing performance of: subarray direct vs slice direct vs ArrayBuffer copy

Created: 3 months ago by: Guest

Jump to the latest result

subarray direct

slice direct

ArrayBuffer copy

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A