GWT is slow in Development Mode

Question

I'm using Eclipse Galileo with latest GWT 2.0 version in development mode, but it runs really slow (I need to wait about a minute to open one page, but after compilation, my application works very well when I run it using Tomcat 5.5).

My code is not too heavy and I guess there is an OS-related or software inconsistency problem, because I'd this problem before, but when I reinstalled Windows Vista SP2 (I formatted my Windows drive and reinstalled it), my problem was resolved for a few days and then again it became too slow.

I didn't install any special software on my Windows machine, so I really don't know why this problem occurs. Any suggestion ?

Answer 1

If it has become unusually slow, but was faster previously, and you are debugging, that might be because you have a breakpoint set on a method entry. This can make things extremely slow, even if the breakpoint is not hit. Try clearing your breakpoints.

Answer 2

If you're using smartgwt make sure firebug or similar is disabled. That will really slow down your browser in dev mode.

And as far as NetBeans is concerned there really is a plugin for GWT called GWT4NB. But the IDE is not your problem :)

Answer 3

First time you load the page, it loads all the necessary javacode (and the JVM). Later, each refresh of the page will only loads the changed javacode then execute the whole (I might be wrong though). So if you're closing the browser then reopening your page each time you want to see the changes you made, yes it's going to be slow. If you refresh the page each time, it SHOULD be fast (if the changes you made weren't huge).

Eclipse + GWT 2.0 is not the reason why it's slow... (by the way Shubhkarman, if I'm correct there is no GWT plugin for netbeans...)