Low-power processor hint, such as from a pause instruction
    4.
    发明授权
    Low-power processor hint, such as from a pause instruction 有权
    低功耗处理器提示,例如从暂停指令

    公开(公告)号:US07159133B2

    公开(公告)日:2007-01-02

    申请号:US10759455

    申请日:2004-01-16

    Abstract: A system and corresponding method use a PAUSE instruction as a low power hint in a single threaded or multithreaded environment using “processor slow mode.” One embodiment actually lowers the frequency of the processor clock. Another embodiment virtually lowers the frequency of the processor clock by gating M clock cycles out of every N clock cycles. When all threads have issued a PAUSE instruction, the processor enters slow mode and remains there for a while. After this while, the processor returns to normal mode. Alternatively, an event, such as an interrupt or an exception, can cause the processor to return to normal mode from slow mode.

    Abstract translation: 系统和相应的方法使用“处理器慢速模式”在单个线程或多线程环境中使用PAUSE指令作为低功耗提示。 一个实施例实际上降低了处理器时钟的频率。 另外一个实施例通过在N个时钟周期内门控M个时钟周期来实际上降低处理器时钟的频率。 当所有线程发出PAUSE指令时,处理器进入慢速模式并保持一段时间。 此后,处理器返回正常模式。 或者,诸如中断或异常的事件可以使处理器从慢速模式返回正常模式。

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