Patent ID: 8078901
Filing Date: 2011-12-13
Classification: G06F,G11B

Abstract:
1. A method of operating a disk drive having a processor and a first disk drive subsystem, the method comprising: determining a host activity measure indicative of a frequency of disk access commands received by the disk drive from a host computer; comparing the host activity measure against a host activity threshold; determining a first subsystem activity measure indicative of an activity level of the first subsystem; comparing the first subsystem activity measure against a first subsystem activity threshold; determining that the host activity measure is indicative of a greater frequency of disk access commands than the host activity threshold, and that the first subsystem activity measure is indicative of less activity than the first subsystem activity threshold; and increasing an operating frequency of the processor based at least in part on the determination that the host activity measure is indicative of a greater frequency of disk access commands than the host activity threshold, and that the first subsystem activity measure is indicative of less activity than the first subsystem activity threshold, wherein the first subsystem includes a servo subsystem of the disk drive, and wherein the first subsystem activity measure is an average time interval between consecutive operations of arming the servo subsystem for a seek operation.