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:
Nov. 03, 2015
Filed:
Dec. 10, 2014
International Business Machines Corporation, Armonk, NY (US);
Michael T. Benhase, Tucson, AZ (US);
Stephen L. Blinick, Tucson, AZ (US);
Evangelos S. Eleftheriou, Rueschlikon, CH;
Lokesh M. Gupta, Tucson, AZ (US);
Robert Haas, Adliswil, CH;
Xiao-Yu Hu, Horgen, CH;
Matthew J. Kalos, Tucson, AZ (US);
Ioannis Koltsidas, Zurich, CH;
Karl A. Nielsen, Tucson, AZ (US);
Roman A. Pletka, Uster, CH;
INTERNATIONAL BUSINESS MACHINES CORPORATION, Armonk, NY (US);
Abstract
For efficient track destage in secondary storage in a more effective manner, for temporal bits employed with sequential bits for controlling the timing for destaging the track in a primary storage, a preference of movement to lower speed cache level is implemented based on at least one of an amount of holes and a data heat metric. If a first bit has at least one of a lower amount of holes and a hotter data heat metric, it is moved to the lower speed cache level ahead of a second bit that has at least one of a higher amount of holes and a cooler data heat. If the first bit has a hotter data heat and greater than a predetermined number of holes, the first bit is discarded.