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:
Dec. 06, 2016
Filed:
May. 20, 2016
International Business Machines Corporation, Armonk, NY (US);
Bruce McNutt, Gilroy, CA (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
Free space collection in a log structured storage system. In response to receiving a request to collect free space, the segment in a recently invalidated segment list having the largest cumulative sum of invalidation duration values is selected for free space collection if this cumulative sum is larger than the cumulative sum of invalidation duration values for the segment in a stable segment list having the largest cumulative sum of invalidation duration values. Otherwise, the segment in the stable segment list having the largest cumulative sum of invalidation duration values is selected for free space collection. emptying. The selected segments are then emptied and become available for the writing of data to their tracks.