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:
Feb. 28, 2012
Filed:
Feb. 12, 2009
Herman L. Blackmon, Moline, IL (US);
Joseph A. Kirscht, Rochester, MN (US);
Elizabeth A. Mcglone, Rochester, MN (US);
Jeb A. Shookman, Milwaukee, WI (US);
Herman L. Blackmon, Moline, IL (US);
Joseph A. Kirscht, Rochester, MN (US);
Elizabeth A. McGlone, Rochester, MN (US);
Jeb A. Shookman, Milwaukee, WI (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
Read commands on a mirrored memory computer system are scheduled by utilizing information about pending memory access requests. A conflict queue is configured to track a read/write queue associated with each of a plurality of memory ports on the mirrored memory system. The conflict queue determines a predicted latency on each memory port based on the contents of each of the read/write queues. A compare logic unit is coupled to the conflict queue, wherein the compare logic unit compares a predicted latency of a primary memory and a mirrored memory and schedules read commands to the memory port with the lowest predicted latency.