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Run results for:
Concat vs push(...) for large arrays with PrototypePushApply
Comparing the various ways to append to a large array
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=515081" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
Browser:
Chrome 123
Operating system:
Linux
Device Platform:
Desktop
Date tested:
2 years ago
Spread
767K/s
PrototypePushApply
693K/s
Concat
385K/s
Control (for push)
174K/s
View exact numbers
Test name
Executions per second
✓
Spread
766,986 Ops/sec
PrototypePushApply
693,437 Ops/sec
Concat
385,284 Ops/sec
Control (for push)
173,997 Ops/sec
Script Preparation code:
window.top.tests = {control:[], concat:[], spread:[], pushApply: []}; 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); if (window.top.tests.control.length > window.cutoff) { window.top.tests.control = []; console.log('reset control'); }
Concat
window.top.tests.concat = window.top.tests.concat.concat(window.test); if (window.top.tests.concat.length > window.cutoff) { window.top.tests.concat = []; console.log('reset concat'); }
Spread
window.top.tests.spread.push(...window.test); if (window.top.tests.spread.length > window.cutoff) { window.top.tests.spread = []; console.log('reset spread'); }
PrototypePushApply
Array.prototype.push.apply(window.top.tests.pushApply, window.test) if (window.top.tests.pushApply.length > window.cutoff) { window.top.tests.pushApply = []; console.log('pushApply spread'); }