Patent ID: 6532502
Filing Date: 2003-03-11
Classification: G06F

Abstract:
A command queue control device comprising:a reception queue storing means for storing therein a command received from a host computer; a means for allocating a tag of a queue management number to the command stored in said reception queue storing means; a means for adding a current time to a command queue to which said tag is allocated; an execution queue storing means for storing therein said command queue to which the tag and the current time are added; a means for publishing the command to a disk device while fetching the command queue stored in said execution queue storing means; a means for supervising a lapse time of the command queue stored in said execution queue storing means; and a means for implementing control so as to facilitate acceleration of command processing of said disk device when a command is detected by said lapse time supervisory means, which command is not executed in spite of a lapse of a prescribed time period.