Invention Grant
US07958315B2 Prefetching in a virtual memory system based upon repeated accesses across page boundaries
失效
基于跨页面边界的重复访问，在虚拟内存系统中预取
- Patent Title: Prefetching in a virtual memory system based upon repeated accesses across page boundaries
- Patent Title (中): 基于跨页面边界的重复访问，在虚拟内存系统中预取
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Application No.: US12015656Application Date: 2008-01-17
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Publication No.: US07958315B2Publication Date: 2011-06-07
- Inventor: Vaijayanthimala K. Anand , Sandra K. Johnson
- Applicant: Vaijayanthimala K. Anand , Sandra K. Johnson
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Dillon & Yudell LLP
- Main IPC: G06F12/08
- IPC: G06F12/08
Abstract:
A system and method of improved handling of large pages in a virtual memory system. A data memory management unit (DMMU) detects sequential access of a first sub-page and a second sub-page out of a set of sub-pages that comprise a same large page. Then, the DMMU receives a request for the first sub-page and in response to such a request, the DMMU instructs a pre-fetch engine to pre-fetch at least the second sub-page if the number of detected sequential accesses equals or exceeds a predetermined value.
Public/Granted literature
- US20080133840A1 System and Method of Improved Large Page Handling in a Virtual Memory System Public/Granted day:2008-06-05
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