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. 25, 2001
Filed:
Feb. 17, 1998
Michael Andrew Brian Parkes, Redmond, WA (US);
Barry Michael Nolte, Kirkland, WA (US);
Douglas Stewart Boa, Redmond, WA (US);
Microsoft Corporation, Redmond, WA (US);
Abstract
An invention for reassigning data elements of an application to cache lines to decrease the occurrence of cache line faults is described. First, an application is executed and used in a typically manner. While the application is running, data is collected concerning the loading and storing of data elements. This collection process creates a massive volume of data that is then processed to determine correlations between the loading and storing pairs of elements within each of the application's data structures. These correlations provide a mechanism for weighing the probability of pairs of intra-structure data elements being accessed in sequence, which is best accomplished when the data elements are within a single cache line. A set of simultaneous equations describe the probabilities using the data recording the correlations. These equations are then solved using commonly known linear programming techniques to derive a suggested ordering of data structures. An interactive editor is then used to reorder these data elements in the derived preferred order as authorized by the programmer.