read-cache

How to flush the disk read cache under Windows?

In order to be able to so some benchmarks I need to cleanup Windows disk read cache. How can I do this? In fact I want to compare if loading a big Unicode file (UTF-8 or UTF-16) from disk is faster or not, considering that in memory I do keep UTF-16. I know that it should be no significant difference but in order to benchmark it I nee...