Rendering Time with Async Calls

[padam]

Hi,

I am using QTP 9.2 for capturing ( load + rendering )time of different pages in our web application ( Through Transactions).

In our application all calls are asynchronous and most of the time is taken by data rendering in grid at client machine. And we are focused on capturing the time from page clicked to data displayed in grid.

My actaul question is How I can identify through QTP that when data is completely rendered in grid as I have nothing (element or event ) to make sure that this is last on page.

In last we are sending two Async calls to server but again they are independent to data rendering.

Flow when page is clicked:

Code:

/ServerAgent.aspx?ResetSetSearchSession=1
/ServerAgent.aspx?ResetSetSearchSession=1 /ServerAgent.aspx?LeftMenuToggle=true
/ServerAgent.aspx?LeftMenuToggle=true
/Administration/LanguageEdit.aspx?MenuID=243&IsMenuItem=1 /Administration/LanguageEdit.aspx?MenuID=243&IsMenuItem=1
/CSS/CSS.aspx
/CSS/CSS.aspx
/ServerAgent.aspx?LeftMenuToggle=true
/ServerAgent.aspx?LeftMenuToggle=true
/ServerAgent.aspx?LeftMenuToggle=true
/ServerAgent.aspx?LeftMenuToggle=true
/Administration/LanguageEdit.aspx?MenuID=243&IsMenuItem=1
/Administration/LanguageEdit.aspx?MenuID=243&IsMenuItem=1 /Administration/LanguageEdit.aspx?MenuID=243&IsMenuItem=1/Administration/LanguageEdit.aspx?MenuID=243&IsMenuItem=1

Please revert back if more input is required to explore the situation.

Thanks In Advance.