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  1. #31
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    Quote Originally Posted by ran.davidovitz View Post
    i wanted to buy license today, but i am not feeling too good about the product change while reading this thread,
    I would expect a serious involvement of Sencha team - most of our customers are IE and i cannot have them being impacted to that extent
    +1

  2. #32
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    Has this bug been acknowledged by Sencha?

  3. #33
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    Quote Originally Posted by olof View Post
    Has this bug been acknowledged by Sencha?
    Not to date, which is a little surprising. Hopefully they are looking into it before commenting....

  4. #34
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    a VERY well done example, IMHO, is here http://www.sencha.com/forum/showthre...ce-degradation

    stevil

  5. #35
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    I've spent more time analysing 3.3.1 vs 4.0.0 and the results are not looking great for 4.0.0 across any browser.

    System 1
    Dual Core Xeon - 2.5Ghz
    4GB RAM
    Windows XP Pro 32bit - SP3

    Average time based on:
    Five refreshes per browser
    Loading of Page and Scripts to Completed Layout

    EXTJS 3.3.1
    Test Page : http://localhost/ext3.3.1/examples/themes/index.html

    EXTJS 4.0.0
    Test Page : http://localhost/ext4.0.0/examples/themes/index.html

    See attached Image

    browser.jpg

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    MrSparks,

    I am not sure if it was intentional, but your Test Pages reference your local dev environment.

    Thanks!

  7. #37
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    Ok, so here's what I'd call real world results, a system that's close to what end users might have. Very worrying

    System 2
    Intel P4 - 3.2Ghz
    2GB RAM
    Windows XP Pro 32bit - SP3

    Average time based on:
    Five refreshes per browser
    Loading of Page/Scripts to Completed Layout

    EXTJS 3.3.1
    Test Page : http://localhost/ext/examples/themes/index.html

    EXTJS 4.0.0
    Test Page : http://localhost/new/ext4/examples/themes/index.html

    See attached Image

    browser.jpg

  8. #38
    Sencha User ykey's Avatar
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    Have noticed the same performance issues with ExtJS 4.0.0 in IE8 as compared to ExtJS 3.3.1. Also the API docs are extremely slow in anything other than Chrome. Average around 8 seconds to load a page like Ext.container.AbstractContainer.

  9. #39
    Sencha - Architect Dev Team aconran's Avatar
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    We are actively investigating the source of the IE performance issues. Thanks for all of the test cases, this will help us isolate the issue.
    Aaron Conran
    @aconran
    Sencha Architect Development Team

  10. #40
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    Aaron, again it's *not just IE* that's the problem. ExtJS 4 is slower than 3.3.1 on all browsers....


    Quote Originally Posted by aconran View Post
    We are actively investigating the source of the IE performance issues. Thanks for all of the test cases, this will help us isolate the issue.

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