Dynamically modifying a power/performance tradeoff based on processor utilization

摘要

In one embodiment, the present invention includes a multicore processor having a power controller with logic to dynamically switch a power management policy from a power biased policy to a performance biased policy when a utilization of the processor exceeds a threshold level. Thus at low utilizations, reduced power consumption can be realized, while at higher utilizations, greater performance can be realized. Other embodiments are described and claimed.

主权项

1. A processor comprising:
a plurality of cores and a power controller, the power controller including a logic having circuitry to dynamically update a power management policy for a system including the processor from a power saving biased policy to a performance biased policy when a utilization of the processor exceeds a threshold level, wherein the logic is to dynamically tune a loadline from the power saving biased policy to the performance biased policy when a ratio of a duration of a maximum performance state residency of the plurality of cores during an evaluation interval to a duration of an active state residency of the plurality of cores during the evaluation interval exceeds the threshold level.