System and method for improving index performance through prefetching
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United States of America Patent
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Aug 3, 2004
Grant Date -
Jul 3, 2003
app pub date -
Dec 28, 2001
filing date -
Dec 28, 2001
priority date (Note) -
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Abstract
The present invention provides a prefetch system for use with a cache memory associated with a database employing indices. In one embodiment, the prefetch system includes a search subsystem configured to prefetch cache lines containing an index of a node of a tree structure associated with the database. Additionally, the prefetch system also includes a scan subsystem configured to prefetch cache lines based on an index prefetch distance between first and second leaf nodes of the tree structure.
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