Electrical computers and digital processing systems: memory – Address formation – Generating prefetch – look-ahead – jump – or predictive address
Patent
1995-12-08
1998-06-09
Downs, Robert W.
Electrical computers and digital processing systems: memory
Address formation
Generating prefetch, look-ahead, jump, or predictive address
711137, 395383, G06F 1200
Patent
active
057652139
ABSTRACT:
A method of prefetching data from the storage media of a data storage system, in which the data is stored on, and read from, the storage media in individually-accessible data storage portions, such as tracks of a hard disk. A number of immediately past-read data storage portions are used to predict a storage portion or portions that will likely be requested in the future. The unique identifiers of those previously-read data storage portions are determined, and a prediction coefficient is calculated for each unique identifier. The prediction coefficient is then multiplied by the unique identifier, and the results are summed to determine the unique identifier of a data portion to be prefetched.
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Downs Robert W.
EMC Corporation
Fitzgerald, Esq. Leanne J.
Gunther, Esq. John M.
Verbrugge Kevin
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