Benchmark: Shift loop vs unrolled

Tests:

Shift loop
const arr = []; const ARRAY_SIZE = 5000; for (let i = 0; i < ARRAY_SIZE; i++) { arr.push(i); } while(arr.length) { let index = arr.shift(); index++; }
Unrolled Loop
arr = []; const ARRAY_SIZE = 5000; for (let i = 0; i < ARRAY_SIZE; i++) { arr.push(i); } const arrSize = arr.length; for (let i = 0; i < arrSize; i++) { let index = arr[i]; index++; } arr = [];

Rendered benchmark preparation results:

Previous results

Test case name	Result
Shift loop
Unrolled Loop

ⓘ Get performance results from real users on your website with Request Metrics.

Latest run results:

Run details: (Test run date: 2 years ago)

User agent: Mozilla/5.0 (Linux; Android 10; ONEPLUS A5010) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.120 Mobile Safari/537.36

Browser/OS: Chrome Mobile 91 on Android

Test name	Executions per second
Shift loop	900.6 Ops/sec
Unrolled Loop	253.1 Ops/sec

Shift loop vs unrolled (version: 0)