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:
Jun. 08, 2004
Filed:
Apr. 19, 2001
Jorge R. Rodriguez, Cary, NC (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A system, computer program product and method for designing a cache. A server in a network system, e.g., file system, database system, may receive requests forming a workload. A trace may be performed on the workload to provide information such as the frequency count for each Logical Block Address (LBA) requested in the workload. The trace may then be analyzed by grouping the LBA's with the same frequency count and determining the number of groups counted in the trace. Upon analyzing the trace, an LRU-LFU cache may be designed. An LRU-LFU cache may comprise one or more stacks of cache entries where the number of stacks corresponds to the number of frequency groups counted in the trace. Each particular stack may then have a length based on the number of logical addresses with the same frequency count associated with that particular stack.