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If this stops the core being able to drop to a lower power state it can be whole multiples of power use on some devices.

Wake ups are death for mobile form factors, even if not really doing much work.



This is a pretty good argument against the way we do operating systems now, right?


Why? Most modern OSs are "tickless" - where there's no regular scheduling tick and it can sleep pretty much indefinitely if there's no work.




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