Node.js Millisecond Timeout

Output on Fedora 16

[ [ 0, 1859987 ], [ 0, 1678600 ], [ 0, 1074869 ], [ 0, 1100038 ] ]
[ [ 0, 2997281 ], [ 0, 2231579 ], [ 0, 2200601 ], [ 0, 3107400 ] ]
[ [ 0, 2925 ], [ 0, 2907 ], [ 0, 2910 ], [ 0, 2860 ] ]
[ [ 0, 2869 ], [ 0, 2895 ], [ 0, 2800 ], [ 0, 2851 ] ]
[ [ 0, 1425 ], [ 0, 1925 ], [ 0, 1858 ], [ 0, 1383 ] ]

Output on OS X Mountain Lion

[ [ 0, 1225887 ], [ 0, 1260835 ], [ 0, 1190385 ], [ 0, 1239280 ] ]
[ [ 0, 2379501 ], [ 0, 3575475 ], [ 0, 2255718 ], [ 0, 2430142 ] ]
[ [ 0, 4968 ], [ 0, 2116 ], [ 0, 1921 ], [ 0, 1986 ] ]
[ [ 0, 1940 ], [ 0, 4828 ], [ 0, 2043 ], [ 0, 1943 ] ]
[ [ 0, 1042 ], [ 0, 1660 ], [ 0, 1246 ], [ 0, 1041 ] ]

timers.js

var epoch = process.hrtime();

interval();

function interval () {
  var intervals = [], interval = setInterval(function () {
    if (intervals.length < 12) {
      intervals.push(process.hrtime(epoch)); 
      epoch = process.hrtime();
    } else {
      clearInterval(interval);
      console.log(intervals.slice(intervals.length - 4));
      timeout(2, function () { timeout(1, function () { timeout(0, tick) }) });
    }
  }, 1);
}

function timeout (wait, callback) {
  var setTimeouts = [];
  function timeout () {
    if (setTimeouts.length < 12) {
      setTimeouts.push(process.hrtime(epoch)); 
      epoch = process.hrtime();
      setTimeout(timeout, wait);
    } else {
      console.log(setTimeouts.slice(setTimeouts.length - 4));
      callback();
    }
  }
  timeout();
}

var nextTicks = [];
function tick () {
  if (nextTicks.length < 12) {
    nextTicks.push(process.hrtime(epoch)); 
    epoch = process.hrtime();
    process.nextTick(tick);
  } else {
    console.log(nextTicks.slice(nextTicks.length - 4));
  }
}