Since wait/sleep are not CPU intensive does not it open the door for a "power consumption" attack? Plus, using interruption/clock is not very stealth: it implies switching context, sending signal to a clock, and waiting for a specific interrupt to wake you up (plus reloading context ....).

I guess as usual that during heavy load it may backfire on some hardware by changing its behaviour when there is a pressure to access the clock enabling a potential DOS (on some hardware like heavily asynchronuous equipment like routers for instance, I totally can feel the CPU overload while there is almost no process, IO that requires close to RT beginning to fail unexpectedly, clock drift...).

I mean you don't need a PhD to anticipate this.

It seems a totally elegant, simple and wrong solution to me.