View Full Version : EXTJS 4.X on enterprise solution with IE8 - poor performance

22 Jun 2014, 10:26 PM
Hi all,
We have a huge web app on an enterprise solution level with hundrend of thousand of line of code.
Our app is now being testes on various browsers and seems fine on most of them
But on IE 8 the situation is very poor on performance
IE 8 crashed after something betwen 30 to 120 minutes of work and it is always leaking in memory.

We have tried several solution to this issue with no luck
Any suggestions?
BTW - we do destory stores and unregister from events and destorying manually any 3rd party code we are using.

Did any one has success on these issue on an enterprise level solution?

23 Jun 2014, 1:52 PM
This would be very difficult to determine just by saying our app is slow. I would look at your layout runs first to see why it is taking so long.
(over nesting, calculated heights, etc)

IE8 is a dog, but it should not take 120 min unless you encountering bad layout runs, or perhaps loading hundreds of records in the grid, etc.

You can a run the app in our PageAnalyzer and see what layouts are taking so long.

The next step would be to isolate the sections of your app to see what is going on.