该系统采用动态跟踪调度算法DSA；

DSA, a dynamic schedule algorithm has used in this system;

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相反，会创建一个名为sched_entity的新结构来跟踪调度信息(参见图2)。

Instead, a new structure called sched_entity was created to track scheduling information (see Figure 2).

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例如，如果某个线程没有被调度，当转储缓冲区时它的跟踪信息仍然是可用的。

For example, if one particular thread is not being dispatched, its trace information is still available when the buffers are dumped or snapped.

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