Current for Benchmarking

I want to run some benchmarks on FreeBSD, I would like to do it on the
up and coming 6.2 but isn't this in Debug setup.  So it will not preform
like it will when it is released?  If this is a Debug version of the OS
how would I get it out of the Debug, make world on it?

Or would it just be easier to just run benchmarks on 6.1?  Thanks for
any help.

Ben Adams