Strange behavior with ie8 permutation

Hello, 

We have  a gwt app with only one permutation for Internet Explorer (ie6) and the html tag  <meta http-equiv="X-UA-Compatible" content="IE=7"/> for compatibility.

We think about to add to ie8 and ie9 and remove the html tag. 

But after some performance tests on a IE8 browser, the ie8 permutation appears to be "slower" than the ie6 one.


With IE8, the application's initial loading (e.g the time measured between the forward of the host html page and the first statement in the EntryPoint onModuleLoad() method) takes 4 seconds while it only takes  2 seconds  when for the ie6 permutation + compatibilty tag.

The size of javascript compiled is about to 3.5 MB size for both permutations.

After this initial loading, the IE8 permutation seems to be more efficient (we can monitor all the javascript computation time) but waiting 4 seconds is to long to decide to switch.

We also started working on code splitting but it requieres a lot of effort & time.

Is there anyone who met this kind of problem?

nicolas

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