GWT very slow on IE

[vinod]

Hi

My GWT application takes 10 seconds on IE with GWT .
without GWT it used to take less than second.
10 times slower with GWT.

We are using GWT for first time in our application.
And the app is very slow on IE.
Business is very unhappy with performance.

Can you please help me to bring this performance down to 1 sec.



Thanks & Regards
Vinod

[Manoj]

Install Speed Tracer and profile your application. HttpWatch, Fiddler,
YSlow..there are many tools that can assist you to find out whats
going on..or use sysouts in your rpc calls to see if thats what is
slowing you down.
There is no silver bullet that can make your application faster
without knowing anything about it !!

[Prema Monica]

How many RPC calls do you have on this page? How is the performance on the other browsers?

I believe IE 6 and 7 permit only 2 simultaneous requests. though IE8 permits 6. check out the link below for more details.

http://stackoverflow.com/questions/561046/how-many-concurrent-ajax-xmlhttprequest-requests-are-allowed-in-popular-browser

The correct approach would to first identify whether it is the server code or the client code which is causing the poor performance. most probably it should be the server code, you can check with firebug the time consumed for each RPC and then dig into the call which is consuming the maximum time.

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[Vitali Lovich]

Above all, are you sure you're not running hosted mode?  That'll slow things down significantly.

[Stefan Bachert]

Hi Vinod,

there is a lot of missing information.
* what does your application?
* how is your app implemented without GWT?
* Did you check whether the cause is the extremly poor javascript
performance of IE (how fast does chrome load)
* Did you check the download size?

In general GWT is very fast, look Google Wave for example.

Stefan Bachert
http://gwtworld.de