Benchmark: slice vs subarray vs set - million elements

Script Preparation code:

var data = new Array(1000000);

for (var i = 0; i < data.length; i++) {
  data[i] = i % 2 === 0 ? i : i + 0.5;
}
var f32 = new Float32Array(data);

Tests:

subarray direct
var copy = f32.subarray(0, 500000);
slice direct
var copy = f32.slice(0, 500000);
subarray copy
var copy = new Float32Array(f32.subarray(0, 500000));
slice copy
var copy = new Float32Array(f32.slice(0, 500000));
subarray set
var copy = new Float32Array(1000000).set(f32.subarray(0, 500000));
slice set
var copy = new Float32Array(1000000).set(f32.slice(0, 500000));

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
subarray direct
slice direct
subarray copy
slice copy
subarray set
slice set

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 6 months ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/141.0.0.0 Safari/537.36

Browser/OS: Chrome 141 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
subarray direct	26957782.0 Ops/sec
slice direct	4068.0 Ops/sec
subarray copy	4077.5 Ops/sec
slice copy	1950.9 Ops/sec
subarray set	3977.6 Ops/sec
slice set	1951.3 Ops/sec

Related benchmarks:

slice vs subarray vs set - million elements (version: 1)

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

Created: one year ago by: Guest

Jump to the latest result

subarray direct

slice direct

subarray copy

slice copy

subarray set

slice set

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A