Run results for: push / shift 2

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/72.0.3626.121 Safari/537.36

Browser: Chrome 72

Operating system: Windows

Device Platform: Desktop

Date tested: 5 years ago

Test name	Executions per second
10 ^ 2	317935.1 Ops/sec
10 ^ 3	2293801.0 Ops/sec
10 ^ 4	2406265.0 Ops/sec
10 ^ 5	3084.0 Ops/sec
10 ^ 6	472.1 Ops/sec
10 ^ 7	48.1 Ops/sec

Script Preparation code:

var arrays = [2, 3, 4, 5, 6, 7].reduce((acc, pow) => {
  const array = [];
  const length = Math.pow(10, pow);
  
  for(let i=0; i < length; i++) {
    array.push({ i });
  }
 
  acc[pow] = array;
  
  return acc;
}, {});

var array2 = arrays[2];
var array3 = arrays[3];
var array4 = arrays[4];
var array5 = arrays[5];
var array6 = arrays[6];
var array7 = arrays[7];

Tests:

10 ^ 2
array2.push({x: 1}); array2.shift();
10 ^ 3
array3.push({x: 1}); array3.shift();
10 ^ 4
array4.push({x: 1}); array4.shift();
10 ^ 5
array5.push({x: 1}); array5.shift();
10 ^ 6
array6.push({x: 1}); array6.shift();
10 ^ 7
array7.push({x: 1}); array7.shift();

Run results for: push / shift 2

10 ^ 2

10 ^ 3

10 ^ 4

10 ^ 5

10 ^ 6

10 ^ 7