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    You found a bug! We've classified it as EXTJS-8266 . We encourage you to continue the discussion and to find an acceptable workaround while we work on a permanent fix.
  1. #1
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    Default Memory crash in ExtJS V4.1.1, but not in ExtJS V4.0.7 Chrome 18

    Memory crash in ExtJS V4.1.1, but not in ExtJS V4.0.7 Chrome 18


    REQUIRED INFORMATION


    Ext version tested:
    • ExtJS V4.1.1
    • ExtJS V4.0.7

    Browser versions tested against:
    • IE9
    • Chrome 18

    Description:
    • In ExtJS V4.1.1, Drawing a line of dynamic changes, the update time is set to 10 ms. When running about 10 minutes, the memory grew nearly 400M. Here is my data caption in Windows Task Manager.

      Code:
      147M(17:43:26) -> 232M(17:48:11)
      But In ExtJS V4.0.7, Chrome 18: The page run with no problem. Here is my data:

      Code:
      64M(16:46:45) -> 100M[±15M](17:14:54) -> 90M[±10M](18:03:41) -> 90M[±10M](18:58:22) -> 95M[±10M](19:47:32)
      In ExtJS V4.0.7, IE 9 still have the memory grow problem.

    Steps to reproduce the problem:
    • call the doStart() function to start test

    The result that was expected:
    • Memory should be stable

    The result that occurs instead:
    • The memory been in growth

    Test Case:

    Code:
    var timerUpdate = null;
    var store = null;
    var curIndex = 0;
    
    var count = 10;
    var yValue = 0;
    var chart = null;
    
    var gData = [];
    
    Ext.Loader.setConfig({  
        disableCaching : false
    }); 
    
    
    Ext.require('Ext.chart.Chart');
    
    Ext.define('coord',{
        extend: 'Ext.data.Model',
        fields: ['x', 'y']
    });
    
    Ext.onReady(function () {
        createChart();
    });
    
    function createChart() {
    
        if (store == null) {
            store = Ext.create('Ext.data.Store',{
                model: 'coord',
                data:[
                    {x: 2, y:2}
                ]
            });
        }
    
        if (chart == null) {
            chart = Ext.create('Ext.chart.Chart', {
                renderTo: 'chart',
                width: 300,
                height: 300,
                store: store,
                theme: 'Base',
                axes: [{
                    title: 'y',
                    type: 'Numeric',
                    position: 'left',
                    fields: ['y'],
                    minimum: 0,
                    maximum: count
                },{
                    title: 'x',
                    type: 'Numeric',
                    position: 'top',
                    fields: ['x'],
                    minimum: 0,
                    maximum: count
                }],
                series: [
                    {
                        type: 'line',
                        xField: 'x',
                        yField: 'y'
                    }
                ]
            });
        }
    }
    
    function destroyChart() {
        if (chart) {
            Ext.destroy(chart);
            chart = null;
        }
        curIndex = 0;
    }
    
    function getData() {
    
        if (store == null) {
            return ;
        }
    
        yValue++;
        if (yValue >= count) {
            yValue = 0;
        }
    
    
        var data = [{x:curIndex, y:yValue}];
    
        if ( curIndex <= 0 ) {
            store.removeAll(true);        
    
            gData = [];
            gData.push({x:curIndex, y:yValue});
    
        } else if ( curIndex > count){
    
    
            var i = 0;
            var storeCount = gData.length;
            for (i = 0; i < storeCount - 1; i++) {
                gData[i].y = gData[i+1].y;
            }
            gData[i].y = data[0].y;
    
            curIndex--;
    
        } else {
    
            gData.push({x:curIndex, y:yValue});
    
        }
    
        store.loadData(                
            gData
        );
    
        curIndex++;
    
        // console.log(store.getCount()+"point");
    }
    
    function doStart() {
        
        if (timerUpdate) {
            clearInterval(timerUpdate);
            timerUpdate = null;
        }
    
        timerUpdate = setInterval("getData()", 10);
    
    }
    
    function doStop() {
    
        if (timerUpdate) {
            clearInterval(timerUpdate);
            timerUpdate = null;
        }
    
        destroyChart();
    }


    HELPFUL INFORMATION

    Operating System:
    • Windows XP SP3

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    Thanks for the report! I have opened a bug in our bug tracker.

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    Any news?

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