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. 29, 2006
Filed:
Sep. 02, 2003
Srikanth Rengarajan, Austin, TX (US);
Srikanth Rengarajan, Austin, TX (US);
Intel Corporation, Santa Clara, CA (US);
Abstract
A system and method predict when to generate a bus request ahead-of-time based on bus-activity, bus-usage efficiency and bus-bandwidth usage. A bus-usage efficiency indicator may be generated by a requester, such as a memory controller, based on a number of unused bus cycles that were granted to the requester during a prior observation window. The bus-bandwidth usage indicator may be generated by the requester based on a number of bus transactions effectively utilized by the requester during the prior observation window. The bus-activity indicator may be received from a bus arbiter to indicate system bus activity during a prior system-bus observation window. When the bus-activity indicator indicates that the system bus is busy, a requestor may transition between a full-speculation state, a delayed speculation state and a no-speculation state based on bus-usage efficiency and bandwidth usage. When the system bus is idle, a requester may remain in the full-speculation state.