System and method of pre-fetching using an extended data...

Details System and method of pre-fetching using an extended data... System and method of pre-fetching using an extended data...

2008-05-06

2008-05-06

Sparks, Donald (Department: 2187)

Electrical computers and digital processing systems: memory

Storage accessing and control

Hierarchical memories

C711S111000, C711S112000, C712S207000, C712S237000

Reexamination Certificate

active

07370153

ABSTRACT:
Method and apparatus for implementing controlled pre-fetching of data. An extended data structure can be used to specifying where and when data is to be pre-fetched, and how much pre-fetching is to be performed, if any. The extended data structure has a pre-fetch flag that signals a host controller if pre-fetching is to be done. If the pre-fetch flag is set, pre-fetching is performed, otherwise pre-fetching is not performed. The host controller parses the extended data structure and formulates a data request that is sent to the disk drive. Pre-fetched data can be stored in a buffer memory for future use.

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