Packed vs. holey arrays

Benchmark created on

Setup

var packed_array = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
  
  var holey_array1 = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
  delete holey_array1[0];
  
  var holey_array2 = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
  holey_array2[13] = 0;
  
  var holey_array3 = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, /* hole */, 10];
  
  function packed_sum() {
    var sum = 0;
    for (var i = 0; i < packed_array.length; i++) {
      sum += packed_array[i];
    }
  }
  
  function holey_sum1() {
    var sum = 0;
    for (var i = 0; i < holey_array1.length; i++) {
      sum += holey_array1[i];
    }
  }
  
  function holey_sum2() {
    var sum = 0;
    for (var i = 0; i < holey_array2.length; i++) {
      sum += holey_array2[i];
    }
  }
  
  function holey_sum3() {
    var sum = 0;
    for (var i = 0; i < holey_array3.length; i++) {
      sum += holey_array3[i];
    }
  }

Test runner

Ready to run.

Testing in
TestOps/sec
Packed array sum
packed_sum();
ready
Holey array sum 1
holey_sum1();
ready
Holey array sum 2
holey_sum2();
ready
Holey array sum 3
holey_sum3();
ready

Revisions

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