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:
Sep. 02, 2003
Filed:
Sep. 02, 1999
Applicant:
Inventors:
Thomas Albert Petersen, Austin, TX (US);
Jose Melanio Nunez, Austin, TX (US);
Marie Jeannette Sullivan, Leander, TX (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 1/342 ;
U.S. Cl.
CPC ...
G06F 1/342 ;
Abstract
A system and method are provided for maintaining cache coherency in symmetric multiprocessor system by having logic for performing snoop queries separate from logic for performing snoop actions. This logic split permits increased throughput because pending snoop queries must no longer wait until snoop actions complete. Two state machines are disclosed: a pipeline state machine for snoop queries; and a snoop action state machine, for executing the split logic handling snoop requests.