Method and system for optimizing pre-fetch memory transactions

Details Method and system for optimizing pre-fetch memory transactions Method and system for optimizing pre-fetch memory transactions

2005-05-31

2005-05-31

Nguyen, Hiep T. (Department: 2187)

Electrical computers and digital processing systems: memory

Storage accessing and control

Hierarchical memories

C711S154000

Reexamination Certificate

active

06901486

ABSTRACT:
A method of determining whether to issue a pre-fetch transaction in a memory control system comprising generating a pre-fetch threshold dependent on a demand load of a memory controller, calculating a probability measure of pre-fetch accuracy, comparing the threshold with the calculated probability measure, and determining whether to issue a pre-fetch transaction based upon the comparison of the threshold with the calculated probability measure is provided. A pre-fetch apparatus implemented in a memory control system comprising a pre-fetch threshold generator operable to output a pre-fetch threshold in response to a signal indicative of a memory controller demand load, and a comparator circuit operable to compare the pre-fetch threshold and a probability measure of pre-fetch accuracy, wherein the pre-fetch apparatus issues a pre-fetch transaction on the basis of the comparison by the comparator is provided.

REFERENCES:
patent: 6216219 (2001-04-01), Cai et al.
patent: 6275918 (2001-08-01), Burky et al.
patent: 6557081 (2003-04-01), Hill et al.

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