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:
Apr. 17, 2012
Filed:
Jul. 15, 2008
Michael S. Floyd, Cedar Park, TX (US);
Steven R. Kunkel, Rochester, MN (US);
Aaron C. Sawdey, Cannon Falls, MN (US);
Philip L. Vitale, Rochester, MN (US);
Michael S. Floyd, Cedar Park, TX (US);
Steven R. Kunkel, Rochester, MN (US);
Aaron C. Sawdey, Cannon Falls, MN (US);
Philip L. Vitale, Rochester, MN (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
An aspect of the present invention improves the accuracy of measuring processor utilization of multi-threaded cores by providing a calibration facility that derives utilization in the context of the overall dynamic operating state of the core by assigning weights to idle threads and assigning weights to run threads, depending on the status of the core. From previous chip designs it has been established in a Simultaneous Multi Thread (SMT) core that not all idle cycles in a hardware thread can be equally converted into useful work. Competition for core resources reduces the conversion efficiency of one thread's idle cycles when any other thread is running on the same core.