I have gone throw your tutorial on you blog and I profiled my with. I
could see so many loitering object hanging around , I evaluted them
based upon the method suggetsed on your blog.
Potential Loitering Obejct which I could see is -
* Objects
* Strings
On drill down , I found tons of obejct of following :-
AbstradeDataServies
NetConnetions
ManagedObjectPeoxy- It is refering to DataGridItemRenderer
Worst part is they keep increasing everytime when I load the data and
remove it.
I have removed all my custom code and now app is very bare bone.Lately I
though I could seek help from flexCoders.
- Dharmendra
--- In [email protected], Alex Harui <aha...@...> wrote:
>
> 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: [email protected] [mailto:[email protected]]
On Behalf Of Dharmendra Chauhan
> Sent: Friday, June 26, 2009 10:21 PM
> To: [email protected]
> 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>
>
