How to know the Performance effect when swapping or changing Containers ??

Hi ,
As part of Custom Item Renderer to a DataGridColumn , i am having this code below :
<mx:HBox id="jai">
        <mx:Image source="images/canvas.png" visible="true" height="100%" width="100%"/>
        <mx:Label id="kkk" text="Pavan"/>
        <mx:Button label="Edit" click="openPopUpWindow()"/>
    </mx:HBox>
But unfortunately , this doesn't give me a pleasant look , so i decided to use Panel
instead of HBox , Means this way
<mx:Panel id="jai">
        <mx:Image source="images/canvas.png" visible="true" height="100%" width="100%"/>
        <mx:Label id="kkk" text="Pavan"/>
        <mx:Button label="Edit" click="openPopUpWindow()"/>
    </mx:Panel>
I am also worried about the Performance of the Application at the same time .
Please tell me as how can i know or confirm that Changing the Container from HBox to Panel
didn't affected anything performance wise or not ??
Thanks .

Use the performance profiler. We typically use 3 to 5 runs, looking for
convergence around a range of times.

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