Performance issue in GWT

[Ananth]

Hi All,

We are using GWT 1.4.61. Currently we are facing performance issues to
load a screen it takes minimum 5-8 secs. Each screen in our
application takes minimum 5 secs to load.
And we are using web service call for database communication.
Let me know up to what
size we can transfer data from server to client?
In case of performance issue, GWT is taking long time to render
a screen .

Please advice how to improve performance especially rendering time is
taking more than rpc call.

Thanks,
Ananth.

[Arthur Kalmenson]

It's really going to depend on the amount of data you're trying to
display at once. You need to be a bit more specific as to what you are
doing, but the general rules of thumb are:

- lazy load UI elements, don't load everything at once
- if you need to display a lot of data, paginate it so you don't have
to pull a lot of information from the server.
- if have to load of widgets/display a lot of data, take a look at
IncrementalCommand to let the brower breath so the UI doesn't hang:
http://google-web-toolkit.googlecode.com/svn/javadoc/1.6/com/google/gwt/user/client/IncrementalCommand.html
- don't create a lot of widgets if you don't have to, think about
using the DOM classes.

Hope that helps,
--
Arthur Kalmenson