IE9 Memory Leak setting backgroundPosition

March 7, 2012

This example is a complete web page that demonstrates a slow leak in IE9.

IE9.0.5 leaks a few bytes every time that backgroundPosition is called.

sIEve and Drip show a steady increase in usage of memory but no increase in DOM objects.

Leave it open for 8 hours or so and the IE tab dies when IE runs out of memory.

Reloading the page or going to another page recovers memory - but can be delayed by tens of minutes by what appears to be memory clean-up.

CollectGarbage helps even out the stats but has no effect on the overall bug or steady increase in memory used.

Please help !

Thanks.

Graham

MCSD/ MCAD .Net, MCSE/ MCSA 2003, CompTIA Sec+

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

<html>

background-color: black;' id="my_datecounter_1">

var progress = 0.0;

var timerDateId = window.setInterval(function(){

var temp = document.getElementById("my_datecounter_1");

progress = progress + 0.4;

if (progress > 600) {

progress = 0;

if (typeof(CollectGarbage) == "function") {

CollectGarbage(); / try and make watching stats easier and discount pseudo-leaks /

}

var bpos = "0px " + parseInt(progress) + "px";

temp.style.backgroundPosition = bpos;

},

10);

</script>

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