这表示，当可运行任务数大于latency_nr时，将线性延长调度周期。

That is, when there are more than latency_nr runnable tasks, the scheduling period is linearly extended.

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因此，每个可运行的任务都会追赶其他任务以维持整个可运行任务集合的执行平衡。

Therefore, each runnable task chases the other to maintain a balance of execution across the set of runnable tasks.

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因此，如果每个可运行任务运行与sched_slice等价的时间，那么将花费的时间为sched _ period，每个任务将运行与其权重成比例的时间量。

So, if each runnable task runs its sched_slice worth of time, it has spent sched_period time, and each task will have run an equal amount of time proportional to its weight.

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