The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 08, 2006
Filed:
Sep. 22, 2003
Josef Ezra, Ashland, MA (US);
Josef Ezra, Ashland, MA (US);
EMC Corporation, Hopkinton, MA (US);
Abstract
A method and apparatus for cache management in a data storage system is presented. A table with tags corresponding to cache slots in a cache memory is provided. A copy of the table is stored in a local buffer in response to a request for allocation of one of the cache slots. The locally buffered table is used to make the requested cache slot allocation. A set of control parameters associated with the locally buffered table is used to determine if the locally buffered table can be re-used for cache slot allocation in response to a subsequent request for cache slot allocation. User-selectable levels are provided to control the degree of locally buffered table re-use. The user-selectable levels determine which values of the control parameters are used.