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Optimizing power usage by processor cores based on architectural events

  • US 8,473,766 B2
  • Filed: 09/10/2012
  • Issued: 06/25/2013
  • Est. Priority Date: 12/29/2006
  • Status: Active Grant
First Claim
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1. A processor comprising:

  • eight processing cores;

    one or more caches;

    a power control unit;

    a plurality of thermal sensors, wherein the plurality of thermal sensors are distributed within the processor to collect thermal data of the processor,a plurality of event monitoring counters to monitor one or more events in the processor, wherein the one or more events include instructions retired per cycle, cache miss, stalls, and branch mis-prediction, anda bus to couple the plurality of event monitoring counters and the plurality of thermal sensors to the power control unit, wherein the bus is to transfer data including the thermal data and the one or more events to the power control unit,wherein the power control unit is to manage the power consumed by the processor based on the data received on the bus.

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