Adaptive input/output bus sharing method to improve...

Details Adaptive input/output bus sharing method to improve... Adaptive input/output bus sharing method to improve...

2005-07-21

2009-06-02

Tsai, Henry W. H. (Department: 2184)

Electrical computers and digital data processing systems: input/

Input/output data processing

Input/output process timing

C718S105000

Reexamination Certificate

active

07543089

ABSTRACT:
According to various illustrative embodiments of the present invention, a method for adaptive cluster input/output control includes starting a nonessential input/output operation using a first controller in a first node of a cluster, informing at least a second controller in a second node of the cluster about starting the nonessential input/output operation, and increasing the nonessential input/output operation by a predetermined utilization percentage. The method also includes waiting for a predetermined amount of time, determining whether the nonessential input/output operation has been completed, and determining whether the at least the second controller in the second node has substantially decreased performance. The method also includes decreasing the nonessential input/output operation by the predetermined utilization percentage if the nonessential input/output operation utilization percentage is greater than the predetermined utilization percentage and if the at least the second controller in the second node has substantially decreased performance, and informing the at least the second controller in the second node of the cluster about the completion of the nonessential input/output operation if the nonessential input/output operation has been completed.

REFERENCES:
patent: 5937428 (1999-08-01), Jantz
patent: 7203846 (2007-04-01), Bresniker et al.
patent: 2005/0172097 (2005-08-01), Voigt et al.

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