Yes thanks, I took it to mean understanding what are likely to be the bottlenecks in a particular system and how your design assumptions might shift those bottl

Yes thanks, I took it to mean understanding what are likely to be the bottlenecks in a particular system and how your design assumptions might shift those bottlenecks, which seems to dovetail with what you said above. Having said that your example above is interesting, I hadn't thought about conflicts between the cache algorithm itself and the cached data in memory.