Memory controller that dynamically predicts page misses

Details Memory controller that dynamically predicts page misses Memory controller that dynamically predicts page misses

1995-10-17

1997-07-22

Elmore, Reba I.

395438, 395494, 395550, G06F 1316

Patent

active

056511302

ABSTRACT:
A memory controller dynamically predicts whether a next memory cycle which is not yet available will result in a page miss or page hit condition. RAS lines are selectively precharged if the next memory cycle is predicted to be a page miss. The memory controller keeps track of various combinations of types of cycles when a type of memory cycle is followed by a type of non-memory pending cycle. For each such combination, the memory controller determines the percentage of combinations which result in a page hit on the next memory cycle. Using this history, the memory controller selectively precharges the RAS lines when a certain combination of types of cycles indicates a percentage of hits is below a predicted threshold. If a number of page hits exceeds the predicted threshold, precharging is not performed.

REFERENCES:
patent: 5113511 (1992-05-01), Nelson et al.
patent: 5148538 (1992-09-01), Celtruda et al.
patent: 5239639 (1993-08-01), Fischer et al.
patent: 5269010 (1993-12-01), MacDonald
patent: 5291580 (1994-03-01), Bowden, III et al.
patent: 5303364 (1994-04-01), Mayer et al.
patent: 5333293 (1994-07-01), Bonella
patent: 5341494 (1994-08-01), Thayer et al.
patent: 5359722 (1994-10-01), Chan et al.
Intel Corporation Cache and DRAM Controller (CDC) S82424TX, Revision 1., pp. 44-45.
Peripheral Components 1993 (Intel), pp. 1-522; 1-567 to 1-570 (Oct. 1992).
Peripheral Component Interconnect (Intel), 82420 PCIset Cache/Memory Subsystem (May 1993), pp. 23, 69-70.

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