Benchmark: Concat vs push(...) for large arrays 223123

Script Preparation code:

window.top.tests = {control:[], concat:[], spread:[]};
window.test = (new Array(10)).fill(null);
window.cutoff = 5000;

Tests:

Control (for push)
for (let element of window.test) window.top.tests.control.push(element);
Concat
window.top.tests.concat = window.top.tests.concat.concat(window.test);
Spread
window.top.tests.spread.push(...window.test);
Spread 2
window.top.tests.spread = [window.top.tests.spread, ...window.test];

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Control (for push)
Concat
Spread
Spread 2

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 3 months ago)

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:149.0) Gecko/20100101 Firefox/149.0

Browser/OS: Firefox 149 on Linux

View result in a separate tab

Spread

1.0M/s

Spread 2

545K/s

Control (for push)

253K/s

Concat

3K/s

View exact numbers

Test name	Executions per second
✓ Spread	1,042,726 Ops/sec
Spread 2	545,453 Ops/sec
Control (for push)	253,307 Ops/sec
Concat	2,534 Ops/sec

Concat vs push(...) for large arrays 223123 (version: 1)

Comparing the various ways to append to a large array

Comparing performance of: `Control (for push) vs Concat vs Spread vs Spread 2`

Created: one year ago by: Guest

Go to the latest result

Control (for push)

Concat

Spread

Spread 2

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Concat vs push(...) for large arrays 223123 (version: 1)

Comparing the various ways to append to a large array

Comparing performance of: Control (for push) vs Concat vs Spread vs Spread 2

Created: one year ago by: Guest

Go to the latest result

Control (for push)

Concat

Spread

Spread 2

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Related benchmarks

Comparing performance of: `Control (for push) vs Concat vs Spread vs Spread 2`