Patents by Inventor Yifong Shih

Yifong Shih 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).

  • Method and apparatus for reducing false invalidations in distributed systems
    Patent number: 5590308
    Abstract: A distributed file system controls memory allocation between a global cache shared storage memory unit and a plurality of local cache memory units by calculating a variable global cache LRU stack update interval. A new update interval is calculated using fresh system statistics at the end of each update interval. A stack update command is issued at the end of the update interval only if the expected minimum data residency time in the global cache shared memory is less than or equal to the expected average residency time in the local cache memory.
    Type: Grant
    Filed: September 1, 1993
    Date of Patent: December 31, 1996
    Assignee: International Business Machines Corporation
    Inventor: Yifong Shih