Unverified50% confidenceFactExact time
macOS 内核使用定时器合并（Timer Coalescing）技术，将多个应用的定时器唤醒时机对齐到同一唤醒窗口以减少 CPU 唤醒次数，开发者可通过 Timer 的 tolerance 属性设置可接受延迟
1
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50%
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Long-term
Relevance
8/27/2026
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