Which DBCC commands do I need to run to make sure SQL Server's caches are totally clean?

Question

I want to do some SQL Server performance testing and I want to establish a good baseline. I want to flush all the caches each time so that I know between each test it hasn't cached something so it performs better in between runs. Which DBCC commands should I use to make my SQL server as clean as possible?

Answer 1

DBCC FREEPROCCACHE and DBCC DROPCLEANBUFFERS

This applies from at least SQL Server 2000