Time render of web user control

I have written few custom controls - like user link or literal with image
The problem: I'm putting these controls to repeater and binding the data. The total time to end load the page takes 5 seconds, when binding the same data to gridview with autogenerate columns take only 1 second.
Is there any way to list the time od rendering each controls - like in Trace mode for page.
Or maybe how can I get the time od each control event?
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