为了提高效率，一些应用程序可以将原始数据(而不是经过格式化的数据)保存到该缓冲区。

To improve efficiency, some applications keep raw data instead of putting the formatted data in the buffer.

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要查看跟踪数据，必须转储缓冲区并进行格式化。

To examine the trace data, you must snap or dump and then format the buffers. The snapping of the buffers occurs automatically in any of the following scenarios.

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