Timer coalescing has been around for ages. Linux and Windows both already do it. Here's a 2009 article describing it in Windows: https://blogs.technet.com/b/ask

Timer coalescing has been around for ages. Linux and Windows both already do it. Here's a 2009 article describing it in Windows: https://blogs.technet.com/b/askperf/archive/2009/10/03/windows-7-windows-server-2008-r2-core-parking-intelligent-timer-tick-timer-coalescing.aspx?Redirected=true https://blogs.technet.com/b/askperf/archive/2009/10/03/windo... "App Nap" is a familiar concept to anyone who has ever played a game with unfocused framerate caps (like most MMOs, for example). It being enforced by the OS may be new, though. It kind of feels like a more aggressive `nice` though.