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The solution here is to have a dynamic tick so that when the CPU is idle, the timer interrupt is either deactivated or reprogrammed to happen at a point where the kernel knows there will be work to do (for example, a process might have a timer expiring in 5 seconds, so we must not sleep past that). This is also called tickless mode.
What Does an Idle CPU Do?
manybutfinite.com
In American English, “counsel” and “counselor” are both, in one sense, general terms meaning “one who gives (legal) advice,” the latter being the more formal term. “Counsel” may refer to but one lawyer {opposing counsel says} or, as a plural, to more than one lawyer {opposing counsel say}.
Garner’s Usage Tip of the Day: Lawyer; Attorney; Counsel; Counselor. – LawProse
lawprose.org
Samsung’s approach is based on a measure called pulse transit time, which is the time between the contraction of the heart and when the pulse arrives at a particular body part, like the wrist. It’s correlated with blood pressure.
Why Smartwatch-Measured Blood Pressure Still Isn’t ‘Ready for Primetime’
theverge.com
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