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:
Apr. 29, 2014
Filed:
Mar. 04, 2010
Chengliang Zhang, Redmond, WA (US);
Sadashivan Krishnamurthy, Redmond, WA (US);
Georgiy I. Reynya, Redmond, WA (US);
Alexandre Verbitski, Woodineille, WA (US);
Pedro Celis, Redmond, WA (US);
Dexter Paul Bradshaw, Duvall, WA (US);
Chengliang Zhang, Redmond, WA (US);
Sadashivan Krishnamurthy, Redmond, WA (US);
Georgiy I. Reynya, Redmond, WA (US);
Alexandre Verbitski, Woodineille, WA (US);
Pedro Celis, Redmond, WA (US);
Dexter Paul Bradshaw, Duvall, WA (US);
Microsoft Corporation, Redmond, WA (US);
Abstract
Aspects of the subject matter described herein relate to a buffer pool for a database system. In aspects, secondary memory such as solid state storage is used to extend the buffer pool of a database system. Thresholds such as hot, warm, and cold for classifying pages based on access history of the pages may be determined via a sampling algorithm. When a database system needs to free space in a buffer pool in main memory, a page may be evicted to the buffer pool in secondary memory or other storage based on how the page is classified and conditions of the secondary memory or other storage.