What's a CPU to do when it has nothing to do? [LWN.net]

This article brought to you by LWN subscribersSubscribers to LWN.net made this article — and everything that surrounds it — possible. If you appreciate our content, please buy a subscription and make the next set of articles possible. It would be reasonable to expect doing nothing to be an easy, simple task for a kernel, but it isn't. At Kernel Recipes 2018, Rafael Wysocki discussed what CPUs do w

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節電ステートは稼働状態から遠いほど出入りコストが大きい、その前提で最適運用を探す