Patents by Inventor Brian P. Dixon

Brian P. Dixon 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).

  • System for balancing multiple memory buffer sizes and method therefor
    Patent number: 7617362
    Abstract: A system for balancing multiple memory buffer sizes includes a memory partitioned into a plurality of subgroups, each subgroup containing similarly sized buffers. The system further includes a memory manager which manages requests for buffer space by storing and accessing buffer steal history records in a buffer steal history queue.
    Type: Grant
    Filed: October 20, 2006
    Date of Patent: November 10, 2009
    Assignee: International Business Machines Corporation
    Inventors: David J. Craft, Brian P. Dixon, Yuri L. Volobuev, James C. Wyllie
  • System for balancing multiple memory buffer sizes and method therefor
    Patent number: 7146466
    Abstract: A system for balancing multiple memory buffer sizes includes a memory partitioned into a plurality of subgroups, each subgroup containing similarly sized buffers. The system further includes a memory manager which manages requests for buffer space by storing and accessing buffer steal history records in a buffer steal history queue.
    Type: Grant
    Filed: March 23, 2004
    Date of Patent: December 5, 2006
    Assignee: International Business Machines
    Inventors: David J. Craft, Brian P. Dixon, Yuri L. Volobuev, James C. Wyllie
  • Scalable memory management of token state for distributed lock managers
    Patent number: 7085815
    Abstract: The amount of memory being utilized to store token state information is monitored. In response to the monitoring, one or more actions are taken. For instance, if the monitoring indicates that too much memory is being used to store token state information, then one or more actions are performed to reclaim memory and/or obtain additional memory elsewhere. These actions may include informing one or more clients to reduce their cache sizes, thereby relinquishing tokens; reducing or eliminating one or more byte range token trees; and/or migrating the token server from one node to another node. If the monitoring indicates that additional memory can be used for storing token state information, then one or more client nodes are informed that their cache sizes can be increased.
    Type: Grant
    Filed: July 17, 2001
    Date of Patent: August 1, 2006
    Assignee: International Business Machines Corporation
    Inventors: Brian P. Dixon, Marc M. Eshel, Frank B. Schmuck
  • Scalable memory management of token state for distributed lock managers
    Publication number: 20030018782
    Abstract: The amount of memory being utilized to store token state information is monitored. In response to the monitoring, one or more actions are taken. For instance, if the monitoring indicates that too much memory is being used to store token state information, then one or more actions are performed to reclaim memory and/or obtain additional memory elsewhere. These actions may include informing one or more clients to reduce their cache sizes, thereby relinquishing tokens; reducing or eliminating one or more byte range token trees; and/or migrating the token server from one node to another node. If the monitoring indicates that additional memory can be used for storing token state information, then one or more client nodes are informed that their cache sizes can be increased.
    Type: Application
    Filed: July 17, 2001
    Publication date: January 23, 2003
    Applicant: International Business Machines Corporation
    Inventors: Brian P. Dixon, Marc M. Eshel, Frank B. Schmuck