What does the memory profiler say? There's a "tutorial" on how to use it on my blog.
Alex Harui Flex SDK Developer Adobe Systems Inc.<http://www.adobe.com/> Blog: http://blogs.adobe.com/aharui From: flexcoders@yahoogroups.com [mailto:flexcod...@yahoogroups.com] On Behalf Of Dharmendra Chauhan Sent: Friday, June 26, 2009 10:21 PM To: flexcoders@yahoogroups.com Subject: [flexcoders] Memory Leak in DataServices based App ?? Hi All, I have very basic application which uses DataSerives over RTMP channel to populate dataGrid , I have not used any user defined component. This application has got LOAD data and Remove data Button just to simulate the actual application What happens , when I click on LOAD data , It loads the data from server(JBOSS) then I Remove all the data and force the GC to run If I continuously keep loading and removing the data , memory goes up every time and after some times It reaches to threshold and finally crashes the Browser. In actual application as soon as user logs in a dedicated DS destination is created.. private function createDestination(destName:String):void{ var remoteServi! ce:RemoteObject = new RemoteObject("DestinationManager"); remoteService.addEventListener(ResultEvent.RESULT, resultHandler,false,0,true); var operation:AbstractOperation = remoteService.getOperation("createDestination"); operation.send(destName); var cs:ChannelSet = new ChannelSet(); var rtmpChannel:RTMPChannel = ServerConfig.getChannel("my-rtmp") as RTMPChannel; cs.addChannel(rtmpChannel); ! ; tradeService = new DataService() ; ! ; & nbsp; tradeService.destination=destName; tradeService.channelSet = cs; } Now when user hits on Load data button to load the trade data ... public function loadData():void { var remoteService:RemoteObject = new RemoteObject("filterRemoteVO"); var operation:AbstractOperation = remoteService.getOperation("loadData"); tradeService.fill(tradeCollection); operation.send(rowData.t! ext ,GUIID); tradeList.dataProvider = tradeCollection; } Remove Data hit I clean all the resource and released collection :- public function removeAll():void{ if(tradeList.dataProvider){ tradeCollection.source = new Array(); tradeList.dataProvider.source = new Array(); tradeList.dataProvider = null; } tradeService.release(); &nb! sp; ; tradeService.releaseCollection(tradeCollection); tradeService.channelSet.disconnectAll(); tradeService.disconnect(); tradeService.logout(); System.gc(); } Except these 3 function I don't have any code which could cause memory leak. I m using * LCDS 2.5 * Flex 3.0 * JBoss4.2 Please see the mxml file below , If possible please have a look at it , I might not be using dataSerice API correctly. I have been trying to solve this leak for last two week , I really need help from you guys. My client has already evaluating other contemporary technology because of this memory issue. I have al! so created scalled down war file which can be deployed on any java application server.Just provide your emial Id , Iwill send that to you. Any help will greatly be appreciated Regards, Dam ######################## MXML########################## <?xml version="1.0" encoding="utf-8"?> <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"; layout="absolute" creationComplete="init();" height="100%" width="100%" > <mx:Script > <![CDATA[ import mx.containers.GridRow; import mx.utils.Base64Decoder; import mx.utils.StringUtil; import mx.events.Colle! ctionEvent; ! import mx.formatters.Formatter; import mx.events.ResizeEvent; import mx.controls.DataGrid; import mx.effects.Fade; import mx.events.DataGridEvent; import mx.utils.ObjectUtil; import mx.events.ScrollEvent; import mx.formatters.DateFormatter; import mx.events.ListEvent; import mx.data.mxml.DataService; import mx.messaging.config.ServerConfig; import mx.messaging.channels.RTMPChannel; import mx.messaging.ChannelSet; &n! bsp; import mx.rpc.AbstractOperation; import mx.rpc.remoting.RemoteObject; import mx.collections.ArrayCollection; import mx.controls.Alert; import mx.rpc.events.ResultEvent; import mx.messaging.messages.*; import mx.messaging.events.*; import mx.controls.Alert; private var GUIID:String; private var lastRollOverIndex:Number; public var tradeService:DataService=null; public var tradeCollection:ArrayCollection = new ArrayCollection(); ! public var flag:Boolean = false; &! nbsp;&nb sp; private function init():void { var guiId:String ="TEST"; createDestination(GUIID); } public function getData():void{ // memory.text =""+ ((System.totalMemory / 1024)/1024); } public function releaseDataServices():void { // tradeService.fill(nul! l); tradeService.release(); // tradeService.releaseCollection(tradeCollection); tradeService.channelSet.disconnectAll(); tradeService.disconnect(); tradeService.logout(); //tradeService.dataStore = null; } /*Function for creating destination*/ &nb! sp; private function createDestination(! destName :String):void{ var remoteService:RemoteObject = new RemoteObject("DestinationManager"); remoteService.addEventListener(ResultEvent.RESULT, resultHandler,false,0,true); var operation:AbstractOperation = remoteService.getOperation("createDestination"); operation.send(destName); var cs:ChannelSet = new ChannelSet(); var rtmpChannel:RTMPChannel = ServerConfig.getChannel("my-rtmp") as RTMPChannel; cs! .addChannel(rtmpChannel); tradeService = new DataService() ; tradeService.destination=destName; tradeService.channelSet = cs; } //This function calls dataservice fill method depending on wheather destination is created or not private function resultHandler(event:ResultEvent):void{ //call data service as destination is created successfully var status:Boolean = event.result as Boolean ! ; // Alert.show("status="+status); if(status){ getData(); } else{ //TODO report error to MATS app } } public function removeAll():void{ if(tradeList.dataProvider){ tradeCollection.source = new Array(); tradeList.dataProvider.s! ource = new Array(); tradeList.dataProvider = null; } tradeService.release(); // tradeService.releaseCollection(tradeCollection); tradeService.channelSet.disconnectAll(); tradeService.disconnect(); tradeService.logout(); System.gc(); } public function loadData():void &nb! sp; { &nb! sp; ; var remoteService:RemoteObject = new RemoteObject("filterRemoteVO"); var operation:AbstractOperation = remoteService.getOperation("loadData"); tradeService.fill(tradeCollection); operation.send(rowData.text ,GUIID); tradeList.dataProvider = tradeCollection; } ]]> </mx:Script> <mx:DataGrid id="tradeList" initialize="tradeList.dataProvider = tradeCollection" horizontalScrollPolicy="auto" &nbs! p; height="659" x="0" y="84"> <mx:columns> <mx:DataGridColumn headerText="Security Description" dataField="securityDesc" /> <mx:DataGridColumn headerText="B/S" dataField="transactionType" /> <mx:DataGridColumn headerText="Amount" dataField="amount" &nbs! p; /> &n! bsp;&nbs p; <mx:DataGridColumn headerText="Price Text" dataField="priceText" /> <mx:DataGridColumn headerText="Counterparty" dataField="counterParty" /> <mx:DataGridColumn headerText="Trade Date" dataField="tradeDate" /> <mx:DataGridColumn headerText="Settle Date" dataField="settleDate" /> <mx:DataGridColumn headerText="Trade Status" dataField="tradeStatusId" /> <mx:DataGridColumn headerText="Trader" dataField="trader" /> <mx:DataGridColumn headerText="Salesperson" dataField="salesperson" /> &! nbsp; <mx:DataGridColum! n headerText="Ticket Number" dataField="tradeNumber" /> <mx:DataGridColumn headerText="Entry Date" dataField="tradeTime" /> <mx:DataGridColumn headerText="Cancel Date" dataField="cancelDate" /> <mx:DataGridColumn headerText="Cancel Time" dataField="cancelTime" &nb! sp; /> </mx:columns> </mx:DataGrid > <mx:Grid x="149" y="23" width="995"> <mx:GridRow width="100%" height="100%"> <mx:GridItem width="100%" height="100%"> <mx:Label text="Enter No of obejcts" width="111"/> &nbs! p; </mx:Gri! dItem> ; <mx:GridItem width="100%" height="100%"> <mx:TextInput name="row" id="rowData" width="97"/> </mx:GridItem> <mx:GridItem width="100%" height="100%"> ! <mx:Button label="Load Data" click='loadData()'/> </mx:GridItem> <mx:GridItem width="100%" height="100%"> <mx:Button label="removeAll" click='removeAll()'/> </mx:GridItem> &! nbsp; <mx:GridItem width="100%" height="100%">! ; &nb sp; <mx:Label text="Total Memory"/> </mx:GridItem> <mx:GridItem width="100%" height="100%"> <mx:TextInput text="Total Memory" id="memory" width="97"/> &! lt;/mx:GridItem> <mx:GridItem width="100%" height="100%"> <mx:Label text="Grid Row Count"/> </mx:GridItem> <mx:GridItem width="100%" height="100%"> &nbs! p; <mx:TextInput name="GridRowCountN" id="GridRowCount! " & nbsp; width="97"/> </mx:GridItem> </mx:GridRow> </mx:Grid> </mx:Application>
