Microsoft Technology Licensing, LLC

Scott Arthur McFarling

Ramarathnam R Venkatesan

Zheng Wang

Ken B Pierce

Systems and methods are discussed that allow profile information to be reused by various versions of a program. One illustrative aspect includes a method for comparing versions of a program in binary format. The method includes finding equivalent contents in portions of two versions of the program, finding equivalent structure in the portions of the two versions, and forming a match when a portion of one of the two versions is an equivalence of a portion of the other of the two versions.

Methods for comparing versions of a program

The present invention is directed to a system and method for improved collection of application profile data for performance optimization. The invention provides a mechanism for storing usage bits within the hardware cache of a computing device. These usage bits provide profile data by tracking the memory usage data. In one embodiment, the present invention also provides usage bits for each level of a multi-stage hardware cache to provide multi-stage usage tracking.

System and method for improved collection of software application profile data for performance optimization

In one aspect, in response to each of plural page faults, a copy of a requested virtual memory page is written to a sorted set of pages in the read order of the sorted pages. A copy of a modified or new data page also can be written to the sorted set. Sorting can be limited to certain kinds of pages (e.g., data pages). Temporary data pages can be deleted from a sorted set to improve efficiency. If a previously sorted page is requested, writing the page back to the sorted set can be omitted. A sorted set of pages also can be sorted based on retirement order. In another aspect, copies of pages that are accessed or not accessed in memory within certain time windows are written in a sorted order based on phase groups.

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Redmond, WA, United States of America

Scott Arthur McFarling