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. 01, 2006
Filed:
Apr. 24, 2003
Gary Dean Anderson, Austin, TX (US);
Adam Charles Lange-pearson, Rochester, MN (US);
Thomas Joseph Warne, Eyota, MN (US);
Gary Dean Anderson, Austin, TX (US);
Adam Charles Lange-Pearson, Rochester, MN (US);
Thomas Joseph Warne, Eyota, MN (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method, apparatus and computer program product are provided for implementing time synchronization correction in computer systems. A service processor includes a battery-backed hardware clock, and a hypervisor includes a hypervisor system clock. A common timer resource is accessible by the hypervisor and the service processor. To synchronize the battery-backed hardware clock and the hypervisor system clock, the common timer resource is used to measure the latency in the communication medium between the hypervisor and the service processor. The latency is then added onto the time value received in time of day messages between the hypervisor and the service processor for time synchronization correction in the computer systems.