I'm using ExtJS 4.0.7 on Windows 7 Professional with Chrome 24 and IE9.
Like several users in the Bugs 4.x forum, I've discoverd that every http request is adding to the browsers memory. Garbage collection does not free all the memory so over long periods of time (4-8 hours or more), or frequent polling (20 sec/min) the application begins to starve.
Yesterday I migrated to 4.1 beta from 4.0.7 hoping to resolve the problem but with no success.
Several others have already posted example code exposing the issue so I won't add to the collection. ShadowZero3000's post from May 2011 exemplifies the problem.
I just want to update the thread...there is NO bug.
I stripped my application down to the core MVC XHR classes and ran numerous tests over the last couple of nights. I can happily report that there are no memory leaks resulting from the poling http store.load() method. The browser memory does increase after each load but eventually garbage collection frees up most if not all of the RAM.
In the end, my leaks are the result of dynamically adding ProgressBars to a Grid Column in its renderer.
I only want ProgressBars when there's something loading and loaded. Otherwise, the cell's text value will suffice...
If anyone knows how to destroy those orphaned objects between grid refreshes, please let me know!!
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