Modern processors have a special hardware facility, the Performance Monitor Unit (PMU), to collect the events related with the operations in the processor.

现代处理器具有一种特殊的硬件设施，即Performance Monitor Unit (PMU)。它用于收集与处理器中的操作相关的事件。

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Upon establishing one unit as the master, users are able to control many performance attributes of the multi-monitor setup in unison through the single monitor.

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