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. 22, 1992
Filed:
Oct. 20, 1989
Ted E Blank, Wappingers Falls, NY (US);
Donald F Ferguson, Port Jefferson Station, NY (US);
Jeffrey A Frey, Highland, NY (US);
Angelo Pruscino, Poughkeepsie, NY (US);
Robert R Rogers, Beacon, NY (US);
Erhard Rahm, Kaiserslautern, DE;
International Business Machines Corp., Armonk, NY (US);
Abstract
Page management mechanisms provide candidates for page stealing and prefetching from a main storage data cache of shared data when the jobs sharing the data are accessing it in a sequential manner. Pages are stolen behind the first reader in the cache, and thereafter at locations least likely to be soon re-referenced by trailing readers. A 'clustering' of readers may be promoted to reduce I/O contention. Prefetching is carried out so that the pages most likely to be soon referenced by one of the readers are brought into the cache.