Electrical computers and digital processing systems: memory – Storage accessing and control – Control technique
Reexamination Certificate
2010-04-13
2011-10-04
Thai, Tuan V. (Department: 2185)
Electrical computers and digital processing systems: memory
Storage accessing and control
Control technique
C711S100000, C711S118000, C711S154000, C711S204000
Reexamination Certificate
active
08032723
ABSTRACT:
A proactive, resilient and self-tuning memory management system and method that result in actual and perceived performance improvements in memory management, by loading and maintaining data that is likely to be needed into memory, before the data is actually needed. The system includes mechanisms directed towards historical memory usage monitoring, memory usage analysis, refreshing memory with highly-valued (e.g., highly utilized) pages, I/O pre-fetching efficiency, and aggressive disk management. Based on the memory usage information, pages are prioritized with relative values, and mechanisms work to pre-fetch and/or maintain the more valuable pages in memory. Pages are pre-fetched and maintained in a prioritized standby page set that includes a number of subsets, by which more valuable pages remain in memory over less valuable pages. Valuable data that is paged out may be automatically brought back, in a resilient manner. Benefits include significantly reducing or even eliminating disk I/O due to memory page faults.
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Ergan Cenk
Fortin Michael R.
Iyigun Mehmet
Sechrest Stuart
Microsoft Corporation
Thai Tuan V.
Workman Nydegger
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