Run results for: async for vs promise.all

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/134.0.0.0 Safari/537.36

Browser: Chrome 134

Operating system: Linux

Device Platform: Desktop

Date tested: one year ago

asyncFor

4.3M/s

asyncPromiseAll

1.4M/s

View exact numbers

Test name	Executions per second
✓ asyncFor	4,277,954 Ops/sec
asyncPromiseAll	1,361,809 Ops/sec

Script Preparation code:

async function asyncFor(){
    for (const x of [1, 2, 3]) {
        await new Promise(resolve => resolve(x > 0));
    }
}

async function asyncPromiseAll() {
    await Promise.all([1, 2, 3].map(x =>
        new Promise(resolve => resolve(x > 0))
    ));
}

Tests:

asyncFor
asyncFor()
asyncPromiseAll
asyncPromiseAll()