| 摘要 |
A command queue control device, when there is the command which is not completed in spite of a lapse of prescribed time period, is capable of facilitating the command processing of the disk device, even though delay occurs in the command processing of the disk device, by causing the disk device to facilitate acceleration of the command. The command queue control device comprises a measure for storing therein a command from a host computer, a measure for allocating a tag to the stored command, a measure for adding a current time to a command queue to which the tag is allocated, a measure for storing therein the command queue to which the tag and the current time are added, a measure for publishing a command to a disk device while fetching the command queue stored in the above-described storing measure, a measure for supervising lapse time of the command queue stored in the storing measure, and a measure for implementing control so as to facilitate acceleration of the command processing of the disk device when the command which is not executed yet although the prescribed time period elapses is detected.
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