Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Donald L. Ward0
Kenneth Charles Vossen0
Kenneth Gerald Linn0
Larry J. Cravens0
Glen W. Nelson0
Jay Paul Kurtz0
Date of Patent
July 20, 2010
0Patent Application Number
121438650
Date Filed
June 23, 2008
0Patent Citations Received
Patent Primary Examiner
Patent abstract
A method, apparatus and computer program product are provided for implementing feedback directed deferral on nonessential direct access storage device (DASD) operations. A kernel DASD I/O manager maintains a queue depth count value for a DASD unit and maintains a busy flag that indicates when the queue depth count value is greater than a predefined threshold. The kernel DASD I/O manager defers optional operations responsive to the busy flag being set for the DASD unit.
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