1. #1
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    Default Extjs 4.1.1a performance with grid.Render() on IE9

    Extjs 4.1.1a performance with grid.Render() on IE9


    Hello,
    For my test I have used the basic example in ext-4.1.1a\examples\grid\array-grid.js I have just modified this lines (comment the renderTo in grid and add the grid.Render() + time execution calculation) :
    Code:
    ...
    var grid = Ext.create('Ext.grid.Panel', {
       ...
       //renderTo: 'grid-example',
       ...
    });
    var start = new Date().getTime();
    grid.render('grid-example');
    var stop = new Date().getTime();
    var executionTime = stop - start;
    console.log(executionTime);
    The result are :
    IE9 : ~3000ms
    IE8 : ~150ms
    FF v16.0.2: ~80ms
    Chrome v23: ~60ms

    I don't have a support licence, in can't test if 4.1.2 or 4.1.3 solved this performance issue that are unacceptable for my client who use IE9, and I can't force them to use FF or Chrome.

  2. #2
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    Same problem here, we're experiencing initialization problems with grids under Internet Explorer 9 and ExtJS 4.1.1a...

  3. #3
    Sencha Premium Member zonereseau's Avatar
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    Hi,

    I've just tried with 4.1.1a and 4.1.3 with IE9 using WAMP as a webserver and directly with the file:// protocol and I got between 43 to 50ms.

    Without webserver it's slower a bit probably because IE is trying to verify the security of the javascript file differently.

    I'm on Windows 7 with an I7 processor and a lot of RAM running on a SSD disk so maybe the performance issue is elsewhere?

  4. #4
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    Hello and thank you for your answer.
    Well I have found the problem it's our Antivirus (Avast web and script agent) who was installed on all our pc that whas causing the problem.
    I feel stupid to not have thought about this before posting.

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