ENERGY CONSERVATION IN A CONTROLLER USING DYNAMIC FREQUENCY SELECTION

摘要

Systems and methods of adjusting a frequency of a graphics controller may include a logic to determine a metric associated with an input/output (I/O) queue. The metric may be used to determine whether an I/O limited condition exists. The I/O limited condition may be associated with a graphics controller. There may be a logic to cause a frequency of the graphics controller to be decreased when the I/O limited condition exists, and a logic to cause the frequency of the graphics controller to be increased when the I/O limited condition does not exist. The I/O limited condition may exist when a magnitude of the metric is equal to or greater than a first threshold. The I/O limited condition may not exist when the magnitude of the metric is equal to or less than a second threshold.

主权项

1. An apparatus comprising:
a first controller; an input/output (I/O) queue to store I/O requests; an I/O controller to manage the queue; logic to determine whether an I/O limited condition exists based on a metric associated with the input/output (I/O) queue, wherein the I/O limited condition is to be associated with the first controller; logic to cause a frequency of the first controller to be decreased if the I/O limited condition exists to enable a reduction of power consumption by the first controller; and logic to cause the frequency of the first controller to be increased if the I/O limited condition does not exist, and wherein the I/O controller has a frequency that can be maintained as the frequency of the first controller varies.