Invention Grant
- Patent Title: Full track read for adaptive pre-fetching of data
- Patent Title (中): 全面跟踪读取数据的自适应预取
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Application No.: US12006127Application Date: 2007-12-31
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Publication No.: US07899996B1Publication Date: 2011-03-01
- Inventor: Orit Levin-Michael
- Applicant: Orit Levin-Michael
- Applicant Address: US MA Hopkinton
- Assignee: EMC Corporation
- Current Assignee: EMC Corporation
- Current Assignee Address: US MA Hopkinton
- Agency: Muirhead and Saturnelli, LLC
- Main IPC: G06F12/00
- IPC: G06F12/00

Abstract:
Adaptively pre-fetching data includes collecting a first set of statistics based on a number of avoidable read-misses in which data exists that is prior to data being read, collecting a second set of statistics based on a number of avoidable read-misses in which data exists that follows data being read, and collecting a third set of statistics based on said first and second sets of statistics. On the basis of the second set of statistics, a pre-fetch technique is selected from a first technique that pre-fetches data following data being read and a second technique that pre-fetches data before and following the data being read. The first and third set of statistics may be used to determine when to pre-fetch data.
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