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:
Oct. 26, 2004
Filed:
Aug. 09, 2001
Applicant:
Inventors:
Ralph E. Sipple, Shoreview, MN (US);
Wayne D. Ward, New Brighton, MN (US);
Assignee:
Unisys Corporation, Blue Bell, PA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 1/200 ;
U.S. Cl.
CPC ...
G06F 1/200 ;
Abstract
Multi-processor computer systems with multiple levels of cache memories are given an alternate pathway for handling highly contended-for locks. These are called communal locks. The alternate pathway allows for alternate processing schemas that do not impede the performance of the overall system as is otherwise the case in such computer systems where contended-for locks bounce back and forth between contending caches, crimping storage bus bandwidth and system performance. The alternative pathway is not used for ordinary (non communal software lock) data and instruction transfers.