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. 10, 2021
Filed:
Apr. 30, 2019
Applicant:
Emc Ip Holding Company Llc, Hopkinton, MA (US);
Inventors:
Yubing Wang, Southborough, MA (US);
Philippe Armangau, Acton, MA (US);
Assignee:
EMC IP Holding Company LLC, Hopkinton, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 3/06 (2006.01); G06F 12/123 (2016.01);
U.S. Cl.
CPC ...
G06F 12/124 (2013.01); G06F 3/0608 (2013.01); G06F 3/0641 (2013.01); G06F 3/0673 (2013.01); G06F 3/067 (2013.01); G06F 2212/1044 (2013.01); G06F 2212/608 (2013.01);
Abstract
A technique for managing a deduplication digest cache (DDC) includes assigning each digest entry of the DDC to one of multiple entry lists, scoring the entry lists based at least in part on the deduplicability of the data represented by the digest entries in the entry lists, and selecting for eviction from the DDC entries assigned to the lowest-scoring entry list. In this manner, entries assigned to entry lists that perform more poorly in terms of deduplicability tend to be evicted more quickly than entries assigned to entry lists that perform better.