Patents by Inventor Keneth W. Todd

Keneth W. Todd has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Managing unmodified tracks maintained in both a first cache and a second cache
    Patent number: 8799578
    Abstract: Provided are a computer program product, system, and method for managing unmodified tracks maintained in both a first cache and a second cache. The first cache has unmodified tracks in the storage subject to Input/Output (I/O) requests. Unmodified tracks are demoted from the first cache to a second cache. An inclusive list indicates unmodified tracks maintained in both the first cache and a second cache. An exclusive list indicates unmodified tracks maintained in the second cache but not the first cache. The inclusive list and the exclusive list are used to determine whether to promote to the second cache an unmodified track demoted from the first cache.
    Type: Grant
    Filed: May 23, 2011
    Date of Patent: August 5, 2014
    Assignee: International Business Machines Corporation
    Inventors: Kevin J. Ash, Michael T. Benhase, Lokesh M. Gupta, Matthew J. Kalos, Keneth W. Todd
  • Managing unmodified tracks maintained in both a first cache and a second cache
    Patent number: 8700854
    Abstract: Provided are a computer program product, system, and method for managing unmodified tracks maintained in both a first cache and a second cache. The first cache has unmodified tracks in the storage subject to Input/Output (I/O) requests. Unmodified tracks are demoted from the first cache to a second cache. An inclusive list indicates unmodified tracks maintained in both the first cache and a second cache. An exclusive list indicates unmodified tracks maintained in the second cache but not the first cache. The inclusive list and the exclusive list are used to determine whether to promote to the second cache an unmodified track demoted from the first cache.
    Type: Grant
    Filed: May 21, 2012
    Date of Patent: April 15, 2014
    Assignee: International Business Machines Corporation
    Inventors: Kevin J. Ash, Michael T. Benhase, Lokesh M. Gupta, Matthew J. Kalos, Keneth W. Todd
  • MANAGING UNMODIFIED TRACKS MAINTAINED IN BOTH A FIRST CACHE AND A SECOND CACHE
    Publication number: 20120303904
    Abstract: Provided are a computer program product, system, and method for managing unmodified tracks maintained in both a first cache and a second cache. The first cache has unmodified tracks in the storage subject to Input/Output (I/O) requests. Unmodified tracks are demoted from the first cache to a second cache. An inclusive list indicates unmodified tracks maintained in both the first cache and a second cache. An exclusive list indicates unmodified tracks maintained in the second cache but not the first cache. The inclusive list and the exclusive list are used to determine whether to promote to the second cache an unmodified track demoted from the first cache.
    Type: Application
    Filed: May 21, 2012
    Publication date: November 29, 2012
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Kevin J. Ash, Michael T. Benhase, Lokesh M. Gupta, Matthew J. Kalos, Keneth W. Todd