After a recent upgrade, I've been pondering how to spot test optimizations on my workstation, which is now much faster than the average target system. (Keeping

After a recent upgrade, I've been pondering how to spot test optimizations on my workstation, which is now much faster than the average target system. (Keeping a slow computer around and continually moving my code to it would be effective, but inconvenient.) My first idea is to taskset the code to a particular CPU core, and see if linux will let me put that core in a low frequency mode. Has anyone here done this on AMD hardware? If so, were the available frequencies slow enough to be useful for this purpose?