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HomeHomeOur CommunityOur CommunityGeneral Discuss...General Discuss...Wonder if you have the same problem with IE rendering speedWonder if you have the same problem with IE rendering speed
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11/9/2009 9:47 AM
 
Stephan Bourgeois


Joined: 2/11/2009
Posts: 78

 

Hi,
 
I have a web community site and I have a problem with the page rendering of my Forum 4.5.3. I made a lot of test with Fidller tool and everything seems ok. On my work computer and home computer, everything runs fast. But many users are complaining about forum threads to be extremely slow to render.
 
Yesterday, I made a lot of testing on remote users who is experiencing slowness rendering. In Fiddler, we were able to load each element of the page loading and at the last element; IE was hanging with progress bar at the end for at least 30 seconds or more.
 
We then install Google Chrome and made the same test. Chrome is rendering the page almost instantly.
 
I can't ask everybody accessing my site to install Google Chrome. And the slowness of the forum will discourage a lot of persons.
Any idea what can cause the hanging of IE 8 just before rendering the page?
 
Thanks
 
Stephan Bourgeois
 
 
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11/9/2009 11:29 AM
 
David Lee


David Lee's Avatar

www.nevoweb.com
Joined: 3/29/2005
Posts: 446

I've see the same issue, but only when editing pages.  I traced it to what  "I Think" was some kind of javascript clash in a module, I removed the module and it was OK again.  

Sorry but I never did find out the exact reason.

I had a good google on the subject but found nothing....but I believe there is some issue with IE, module javascript and DNN, but exactly what? ..I don't know!

If anyone outthere has a some kind of solution, I for one will be happy to hear it!!

 
 
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11/22/2009 1:57 AM
 
Stephan Bourgeois


Joined: 2/11/2009
Posts: 78

I have a really big problem.

About 25% of my visitors experience a very slow site experience and are discourage using IE. But with Google Chrome the site is fast, I can't ask them to download and install Chrome, the site is suppose to run flawlessly with any web browser.

Because it is running fast with Google Chrome, let me think that the problem is on the client site.

With fiddler tool, I was able to see that the page is loading completly and at the end, just before rendering, the page freeze for about 30 seconds to 1 minutes in some cases. What the IE is doing during this time? Looking at the task manager shows almost 100% idle.

Is someone knows any tools that could help to find the problem?

Thanks
 
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11/22/2009 4:11 AM
 
Sebastian Leupold


Sebastian Leupold's Avatar

Sebastian Leupold's Avatar

Sebastian Leupold's Avatar

Sebastian Leupold's Avatar

www.dnnwerk.de
Joined: 3/8/2004
Posts: 46212

I'd assume, there is some JavaScript problem - Chrome is known for its fast  JS engine, but 30-60 secs in IE seems to indicate either to a bloat of script code or a problem inside one of the scripts.

Cheers from Germany,
Sebastian Leupold

dnnWerk - The DotNetNuke Experts   German Spoken DotNetNuke User Group

Speed up your DNN Websites with TurboDNN
 
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12/1/2009 10:45 AM
 
Stephan Bourgeois


Joined: 2/11/2009
Posts: 78

I tried dynaTrace AJAX Edition and I found that the function

correctPNG() has been invoqued 412 times and took about 1.2 sec.

 

I am not affected by long delay on my computer and I haven't the chance to look at the problematic computer. But the guy told me that correctPNG has been detected has a problem on his computer too.

Any idea if this large number of executions are normal?
 
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