setInterval vs. setTimeout (v9)

Revision 9 of this benchmark created on

Description

Simple comparison of initialization overhead for setInterval vs. setTimeout for a repeating timer. Since jsPerf doesn't currently do async testing, this test doesn't show the actual cost of executing the timer callbacks.

Test runner

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Testing in
TestOps/sec
setInterval
var a = 0,
  b = setInterval(function() {
    a += 1;
    if (a === 2) {
      clearInterval(b);
    }
  }, 1);
ready
setTimeout
var a = 0;

setTimeout(function() {
  a += 1;
  if (a !== 2) {
    setTimeout(arguments.callee, 1);
  }
}, 1);
ready
setTimeout w/predefined function
var a = 0;

function tick() {
  a += 1;
  if (a !== 2) {
    setTimeout(tick, 1);
  }
}

setTimeout(tick, 1);
ready
seti
var a = 0,

  function bibi() {
    a += 1;
    if (a === 2) {
      clearInterval(b);
    }
  }
b = setInterval(bibi, 1);
ready

Revisions

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