Not a dead giveaway i suppose, you're right. And in fact, since you can control precisely the number of instructions per thread timeslice, it does seem non-triv

Not a dead giveaway i suppose, you're right. And in fact, since you can control precisely the number of instructions per thread timeslice, it does seem non-trivial to decide if you're running under more then one core due to the hypervisor being able to inject non-determinism into the context switching.