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. 03, 2015
Filed:
Oct. 31, 2011
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;
Ioannis Koltsidas, Zurich, CH;
Roman A. Pletka, Uster, CH;
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;
Ioannis Koltsidas, Zurich, CH;
Roman A. Pletka, Uster, CH;
International Business Machines Corporation, Armonk, NY (US);
Abstract
The population of data to be inserted into secondary data storage cache is controlled by determining a heat metric of candidate data; adjusting a heat metric threshold; rejecting candidate data provided to the secondary data storage cache whose heat metric is less than the threshold; and admitting candidate data whose heat metric is equal to or greater than the heat metric threshold. The adjustment of the heat metric threshold is determined by comparing a reference metric related to hits of data most recently inserted into the secondary data storage cache, to a reference metric related to hits of data most recently evicted from the secondary data storage cache; if the most recently inserted reference metric is greater than the most recently evicted reference metric, decrementing the threshold; and if the most recently inserted reference metric is less than the most recently evicted reference metric, incrementing the threshold.