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:
Feb. 16, 2016
Filed:
Dec. 24, 2013
International Business Machines Corporation, Armonk, NY (US);
Andrew Dunshea, Austin, TX (US);
Maha Emad, Austin, TX (US);
Douglas J. Griffith, Georgetown, TX (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method, system and computer-usable medium are disclosed for persisting Lightweight Memory Trace (LMT) data across reboots of a system. One or more LMT traces are stored in a predetermined pinned memory area with a server's operating system (OS) through a system reboot. A pointer to each LMT is likewise stored in nonvolatile storage (NVS) at a known memory location. The pointers in NVS point to a page which describes where the LMT trace and other kernel structures are in real memory. During initialization, the OS guards these preserved pages to prevent them from being used. By keeping the current and prior address within NVS, the current LMT and prior traces can be retrieved and processed to determine the cause of the system reboot.