Hi,

In the general case GWT's design guards against common JS pitfalls
that cause memory leaks.

There are a few known issues though:
When you use IFrames that memory is never decently released after
removing the IFrame.
The FormPanel can also leak.

IE6/IE7 are also consuming a huge amount of memory (half a megabyte
per image sometimes) if you use ImageBundles.
That is caused by the AlphaLoader trick they use to support
transparent PNGs in IE6.
I disabled this trick for IE7 and now everything runs a lot smoother.

All other memory leaks are possible plain old Java leaks caused by not
cleaning up or releasing references to objects in you application (so
your fault!)

David

On Fri, Jun 12, 2009 at 1:41 AM, Craig Spry<craig.s...@gmail.com> wrote:
> Hello All,
> We've built an application using GWT 1.5.4 that calls a json server and the
> memory usage for the browser that it is running in keeps going up, I've
> tested this in IE, Firefox and Chrome with the same result.  This
> application is a widget based application, we have a map widget(open street
> maps) and some list widgets but it doesn't seem to matter which widgets that
> we use the memory seems to grow.  I've tried using each widget individually
> with the same result.  The json that is returned is big, Firebug doesn't
> give me a value.  Our application polls for new information.
> I've also tried to use this tool:
> http://blogs.msdn.com/gpde/pages/javascript-memory-leak-detector.aspx
> But it didn't detect any leak in javascript.
> Unfortunatley this is an internal application so I can't point you to our
> application.  If it would be helpful I'll try and knock up a test case.
> Has anyone else had this problem?
> If so what was the solution?
> Thanks,
> Craig Spry
> >
>

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