Ie8 Open my website slow.

2 posts, 0 answers
  1. Worawut
    Worawut avatar
    21 posts
    Member since:
    Oct 2007

    Posted 08 Oct 2009 Link to this post

    I build my project with almost RadControls for ASP.NET Ajax tools . I understand ie8 have javascript checking method to take slow appication.You can suggestion me to improve the performance for my website with IE8?
    (I try to disable viewstate radcompression, and remove almost exclude javascript file but still slow.)

    Demo website (You can try to change left menu to test response time of this page compare with 2 browser IE8,FF etc.)
    (FF 5 sec for response time but  IE8 over 15 sec test on my machine)

    Thanks for your help

  2. Veselin Vasilev
    Veselin Vasilev avatar
    2992 posts

    Posted 09 Oct 2009 Link to this post

    Hello Worawut,

    Actually it runs slowly in Firefox as well - 27.5 seconds when I tried it with Firebug.
    Here is the graph:

    As you see to load a small image like bg.gif or tabLeftOff.gif takes 4 seconds. This means a heavy loaded web server or slow connection to it.
    I noticed that the combined web resources (Telerik.Web.UI.WebResource.axd requests) are not compressed.
    The handler checks whether the requesting browser supports compression and if the Accept-Encoding http header contains "gzip" or "deflate". Could it be some firewall issue? There is a known problem with some firewalls stripping the Accept-encoding header. Please check this topic for details.

    In addition you can check our Top Performance page.

    Sincerely yours,
    Veselin Vasilev
    the Telerik team

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