The state of idle file descriptors is known since the pollcache service is notified once when it changes.

空闲文件描述符的状态是已知的，因为在状态改变时会通知 poll 缓存服务。

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When the demo starts the Application Table is populated with appId 0 in the running state (green light), and idle — the requests slot indicator, the little icon beside the light, is empty.

当该demo启动时，Application Table被处于运行状态(绿灯)的appId 0填充；当处于空闲状态，请求表示器(在灯旁边的小图标)是空的。

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C states, with the exception of the C0 state where the processor is running, are idle states in which the processor will unclock and shut down components to save power.

CPU电源状态(不包括处理器运行时的C0状态)是空闲状态，处理器将解锁并关闭组件来节省电能。

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