The author states: >"Existing hardware resource isolation is primitive and there are no hardware mechanisms for scheduling CPU cycles (interrupts are too clunk

The author states: >"Existing hardware resource isolation is primitive and there are no hardware mechanisms for scheduling CPU cycles (interrupts are too clunky) or memory (likewise for page faults)." Don't Linux cgroups and cpu shares handle exactly this? Or is acknowledging this and meant to be a critique of CFS and its uses throttling when there is contention?