Apple Inc.
System and method for SoC idle power state control based on I/O operation characterization

Abstract:

A method and apparatus of a device that manages system performance by controlling power state based on information related to I/O operations is described. The device collects historical I/O information. The historical I/O information may include the number of I/O operations over a sample period of time and the inter-arrival time between I/O operations. The device further receives information related to a current I/O operation. The information of the current I/O operation may include direction, size, quality of service, and media type of the I/O operation. The device determines a power state based on the historical I/O information and the information relative to the current I/O operation to reduce power consumption while improving system efficiency and maintaining an acceptable level of system performance. The device further applies the determined power state. Other embodiments are also described and claimed.