Sort By... (v74)

Revision 74 of this benchmark created by Gustaf on

Setup

var arr = [];
    for (var i = 0; i < 1000; i++) {
      arr[i] = Math.random();
    }

Test runner

Ready to run.

Testing in
TestOps/sec
MR
for (var i = 0, len = arr.length; i < len; i++) {
  arr[i] *= 2;
}
ready
not cached
for (var i = 0; i < arr.length; i++) {
  arr[i] *= 2;
}
ready
u wot m8
var len = 2;
len *= arr.length;
len -= len / 2;
for (var i = 0; i < len; i++) {
  arr[i] *= 2;
}
ready
while loop
var len = arr.length - 1;
while (len--) {
  arr[len] *= 2;
}
ready
do-while loop
var len = arr.length - 1;
do {
  arr[len] *= 2;
} while (--len);
ready
Prefix Increment
for (var i = 0; i < arr.length; i++) {
  arr[i] *= 2;
}
ready
Prefix + Cached
for (var i = 0, len = arr.length; i < len; i++) {
  arr[i] *= 2;
}
ready
Array map
arr = arr.map(function(el) {
  return el * 2;
});
ready
forEach
arr.forEach(function(el, key) {
 arr[key] *= 2;
});
ready
Loop unrolling
var i = 0, len = arr.length;
for (; (i+3) < len; i+=4) {
  arr[i] *= 2;
  arr[i + 1] *= 2;
  arr[i + 2] *= 2;
  arr[i + 3] *= 2;
}
for (; i < len; i++) {
  arr[i] *= 2;
}
ready

Revisions

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