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. 22, 2017
Filed:
Feb. 19, 2016
International Business Machines Corporation, Armonk, NY (US);
Razik S. Ahmed, Houston, TX (US);
Timothy J. Fisher, Cypress, TX (US);
Aaron D. Fry, Richmond, TX (US);
Nikolas Ioannou, Zurich, CH;
Jason Ma, Sugar Land, TX (US);
Matthew R. Orr, Houston, TX (US);
Roman A. Pletka, Zurich, CH;
Lincoln T. Simmons, Houston, TX (US);
Sasa Tomic, Kilchberg, CH;
International Business Machines Corporation, Armonk, NY (US);
Abstract
A technique for garbage collection in a data storage system includes determining a dirty physical byte count for each of a plurality of candidate garbage collection units. The dirty physical byte count provides a total amount of dirty bytes. At least one of a dirty physical codeword container count and a dirty physical page count is determined for each of the candidate garbage collection units. The dirty physical codeword container count provides an amount of physical codeword containers that are completely dirty and the dirty physical page count provides an amount of physical pages that are completely dirty. A garbage collection unit, included in the candidate garbage collection units, is selected for garbage collection based on the dirty physical byte count and at least one of the dirty physical codeword container count and the dirty physical page count.