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:
Mar. 07, 2017
Filed:
Sep. 24, 2014
Emc Corporation, Hopkinton, MA (US);
Xinlei Xu, Beijing, CN;
Yongjun Wu, Beijing, CN;
Lei Xue, Beijing, CN;
Xiongcheng Li, Beijing, CN;
Peng Xie, Beijing, CN;
EMC IP Holding Company LLC, Hopkinton, MA (US);
Abstract
Embodiments of the present invention provide a method and apparatus for removing cached data. The method comprises determining activeness of a plurality of divided lists; ranking the plurality of divided lists according to the determined activeness of the plurality of divided lists. The method comprises removing a predetermined amount of cached data from the plurality of divided lists according to the ranking result when the used capacity in the cache area reaches a predetermined threshold. Through embodiments of the present invention, the activeness of each divided list may be used to wholly measure the heat of access to the cached data included by each divided list, and upon removal, the cached data with lower heat of access in the whole system can be removed and the cached data with higher heat of access in the whole system can be retained so as to improve the read/write rate of the system.