Gathering performance metrics

Hi,
are there any tools out there that will give me information such as the time it takes to load a texture. When the textures are swapped out of card memory and into RAM, and other performance data?

I looked at http://www.gremedy.com/ , they have a presentation on performance, but their methods are usually “load a dummy texture, does performance increase? Then it’s the texture loading”

I wanted to put some numbers to these things.
Thanks for suggestions.