系统上的每个CPU都有自己专用的运行队列，该队列是按线程优先级值排序的可运行线程的列表。
Each CPU on a system has its own dedicated run queue, which is a list of runnable threads sorted by thread priority value.
每个CPU在自己的队列中进行调度，如果没有可运行的KSE，则从其他CPU那里取一些有软亲缘的KSE，并且重新排序。
Each CPU schedules from its own queues, and resorts to stealing runnable softly affined KSEs from other CPUs if there are no runnable KSEs.
当前运行队列中线程的数目。代表线程处于可运行状态，但CPU还未能执行。
The amount of threads in the run queue. These are threads that are runnable, but the CPU is not available to execute them.
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