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. 20, 2017
Filed:
Apr. 30, 2012
Applicants:
Frederick Douglis, Basking Ridge, NJ (US);
Windsor W. Hsu, San Jose, CA (US);
Hangwei Qian, Cleveland, OH (US);
Inventors:
Frederick Douglis, Basking Ridge, NJ (US);
Windsor W. Hsu, San Jose, CA (US);
Hangwei Qian, Cleveland, OH (US);
Assignee:
EMC IP Holding Company LLC, Hopkinton, MA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 12/02 (2006.01); G06F 3/06 (2006.01); G06F 12/0866 (2016.01);
U.S. Cl.
CPC ...
G06F 3/0641 (2013.01); G06F 12/0866 (2013.01);
Abstract
Data objects of a file are cached in a cache memory of a storage system. An access sequence of the cached data objects is determined based on metadata of the file. In response to a request for cache space reclamation, a data object is evicted from the cache memory whose next access is a farthest amongst the cached data objects based on the access sequence of the data objects.