This is silly. The conceit that ipc is a simplification for "higher is better" is exactly the problem he has with utilization.
True, but useful? Most of us are busy trying to get writes across a networked service. Indeed, getting to 50% utilization is often a dangerous place.
For reference, running your car by focusing on rpm of the engine is silly. But, it is a very good proxy and even more silly to try and avoid it. Only if you are seriously instrumented is this a valid path. And getting that instrumented is not cheap or free.
True, but useful? Most of us are busy trying to get writes across a networked service. Indeed, getting to 50% utilization is often a dangerous place.
For reference, running your car by focusing on rpm of the engine is silly. But, it is a very good proxy and even more silly to try and avoid it. Only if you are seriously instrumented is this a valid path. And getting that instrumented is not cheap or free.