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Thread: [4.x] Serious performance issues under IE 8

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  1. #61
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    Just tested the themes example with 4.0.1 on same machine as measurements below. There is no visible improvement at all over 4.0.0 on IE8. ExtJS 4.0.1 is still nearly 3x slower than 3.3.3 on IE8. Since this example renders many component types it is good test to compare the basics. In order to claim that 4.x is faster than 3.x this test should show it.

    Quote Originally Posted by rich02818 View Post
    Some additional data points. Within same IE instance (different tab). Here are the reload times:

    http://localhost/ext-4.0.0/examples/themes/index.html
    5.3 s

    http://localhost/ext-3.3.3/examples/themes/index.html
    1.8 s

  2. #62
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    Rich -

    I've added a ticket specifically to test and optimize the themes example.

  3. #63
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    @Aconran,

    I've re-ran my theme's tests under 4.0.1 and I'm seeing the same two issues. See Attached

    Image4.0.1.jpg

    1. 4.0.1 is noticeably slower than 3.3 across all browsers.
    2. IE 8 has a very serious performance issues running on 4.0.1

    It's not isolated to the themes example. Any complex app comes off badly on 4.0.1 when compared against 3.3

    On a positive note, IE & Themes is 1.3 seconds quicker on 4.0.1 than it was on 4.0.0

    Good luck guys. If I can help, please let me know.

    MrSparks

  4. #64
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    yeah , i have the same issue.

  5. #65
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    Exclamation

    We have the same issue here. In our test Ext4 is running slower in compare to Ext3.3 in almost all cases where there is nested layout. We purchased Ext4 license hoping that it will be faster and easier to code. But unfortunately that's not happening. Where is the SDK documents and custom theming guides.

    My question is why Sencha made a false claim that Ext4 is fastest framework they have ever worked on. Just marketing hype???

    To those who does not know which video I am talking about. Here is the link.

    http://extjs.cachefly.net/video/extjs4-launch.mov

    Does anybody know how soon this will be fixed??? Rough timeline...?

  6. #66

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    still no response after 4.0.1 release?

    our company's license is going to expire in days. i won't be surprised if management make decision to reject renew.

    unfortunately, i got caught already...

  7. #67

  8. #68
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    The entire team is focused on improving performance for 4.0.2. The more information you can share with us, the better! Please don't take our slower than normal response as apathy. We are committed to getting this resolved and we're investigating these issues thoroughly.

  9. #69
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    Hey we just put out a 4.0.2 RC with several performance improvements - see http://www.sencha.com/forum/showthre....2-RC-released. We actually have one more hefty performance-improving patch to merge in (aimed at improving performance in cases like the themes example) that we expect to be present in 4.0.2 final

  10. #70
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    Quote Originally Posted by edspencer View Post
    Hey we just put out a 4.0.2 RC with several performance improvements - see http://www.sencha.com/forum/showthre....2-RC-released. We actually have one more hefty performance-improving patch to merge in (aimed at improving performance in cases like the themes example) that we expect to be present in 4.0.2 final
    Thanks for the headsup Ed. I'll hang fire on the stats in that case.

    Good luck and thanks for all the hard work!

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