Well, there are a couple of things to consider ... besides the possibility of BHOs mucking up the works in your particular install of IE.
1) Creating a large number of objects can certainly be slow if done in a tight loop. (for instance populating a very large grid with widgets). if you are doing this, some of the performance problems could be mitigated by using incrementalCommand, or simply only render the visible parts. Smaller numbers of objects render just fine. In some cases, it is faster to create HTML (maybe on the server even) and just setInnerHTML() than it is to try to create the same thing with a large number of widgets. 2) Internet Explorer has the slowest javascript engine in existence, so don't be particularly surprised if code runs noticeably slower there than on FF, Safari, or Chrome. -jason On Feb 4, 2009, at 6:26 AM, kernel wrote: > > Perhaps I didn't describe the problem clearly. > > I want to say that the same code will run 4000ms in my IE7 on Windows > XP SP3. But in IE6 it needs only 20ms. I know that FF3 and Chrome are > much faster than IE, but is IE6 much faster than IE7? > > By the way, I have tested the code in IE7 in Vista just now. It needs > only 20ms too. > > I guess that the problem is caused by some software installed in my > system, but I can't find it. > > Isn't any one else have this problem? > > > On 2月4日, 下午8时27分, "alex.d" <[email protected]> > wrote: >> You are asking: why can't i go from 0 to 100km/h in 3s with my 10- >> years old Ford escort like i do with my Lamborghini gallardo? :))) I >> seriously doubt that IE6 can show perfomance similar to that of >> Chrome >> or FF3. >> >> What you can do is optimize your code - like creating elements on >> demand etc. Or forbid using "bad" browsers. But there is no real >> solution to this problem. >> >> On 4 Feb., 12:27, kernel <[email protected]> wrote: >> >>> I'm using the GWT 1.5.3 >> >>> On 2月4日, 下午7时26分, kernel <[email protected]> wrote: >> >>>> I build a very simple application using GWT, but it is to slow on >>>> some >>>> browers. I have make many test, at last I found that the reason. In >>>> some brower, the creation of an Element is very very slow, but on >>>> some >>>> other bowers it's very fast. >> >>>> For example, when I I'm using IE7 on Windows XP Pro SP3, the >>>> following >>>> code will run about 4000ms. >> >>>> for (int i = 0; i < 2000; i++) >>>> { >>>> Document.get().createDivElement(); >> >>>> } >> >>>> But when I use FireFox 3, Chrome or just some IE6 on Windows XP, >>>> the >>>> code will run just about 20ms. >> >>>> How can I solve the problem? > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Google Web Toolkit" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/Google-Web-Toolkit?hl=en -~----------~----~----~----~------~----~------~--~---
