Array push() vs unshift() vs direct assignment vs direct assignment out-of-order (v9)

Revision 9 of this benchmark created by Jason Kuhrt on

Setup

var a = [];
  var b = new Array(5);

Test runner

Ready to run.

Testing in
TestOps/sec
push
a.push(1);
a.push(2);
a.push(3);
a.push(4);
a.push(5);
a.push(6);
ready
unshift
a.unshift(6);
a.unshift(5);
a.unshift(4);
a.unshift(3);
a.unshift(2);
a.unshift(1);
ready
Direct Assignment
a[0] = 1;
a[1] = 2;
a[2] = 3;
a[3] = 4;
a[4] = 5;
a[5] = 6;
ready
Fixed array
b[0] = 1;
b[1] = 2;
b[2] = 3;
b[3] = 4;
b[4] = 5;
b[5] = 6;
ready
Direct with length
a[a.length] = 1;
a[a.length] = 2;
a[a.length] = 3;
a[a.length] = 4;
a[a.length] = 5;
a[a.length] = 6;
ready
Fixed array (out of order assignment)
b[1] = 2;
b[3] = 4;
b[0] = 1;
b[2] = 3;
b[5] = 6;
b[4] = 5;
ready
Direct Assignment (out of order assignment)
a[1] = 2;
a[3] = 4;
a[0] = 1;
a[2] = 3;
a[5] = 6;
a[4] = 5;
ready

Revisions

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