What you need is really much more about the particular workloads you have. It is still often true that code is waiting on network packets or disk I/O. That didn

What you need is really much more about the particular workloads you have. It is still often true that code is waiting on network packets or disk I/O. That didn't just change with the decade. This kind of folk wisdom is pretty useless on the whole and we should push people much harder to measure and find their specific problems rather than operating by rule of thumb.