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:
Nov. 16, 2021
Filed:
Sep. 24, 2020
Fujitsu Limited, Kawasaki, JP;
Jun Kato, Kawasaki, JP;
FUJITSU LIMITED, Kawasaki, JP;
Abstract
An information processing device includes: a cache memory; and a processor configured to: manage the number of times of reference to be used for deduplication control of a data block; store, among data blocks in the cache memory, a first management list in which the data block in which writing is requested and the number of times of reference is 1 is managed by a least recently used scheme, and, among the data blocks in the cache memory, a second management list in which the data block in which writing is requested and the number of times of reference is equal to or larger than 2 is managed by the LRU scheme; and in a case where a data block to be written is registered in the first management list when a write request is processed, maintain the data block registered in the first management list over the cache memory.