Data transfer apparatus and method for data processing system

Details Data transfer apparatus and method for data processing system Data transfer apparatus and method for data processing system

1993-03-25

1997-01-07

Harvey, Jack B.

395440, 395464, 39542103, G06F 1300, G06F 1314

Patent

active

055926304

ABSTRACT:
A data transfer system includes a controller having a cache memory and a transfer information judging unit for reading information stored in a recording medium and for obtaining a first transfer enabled time for storing the information of a track of the recording medium in the cache and a second transfer enabled time for storing the information of the recording medium in the cache memory. A buffer memory temporarily stores the information read from a request track and a pre-load track of the recording medium at every track, in which between the recording medium and the buffer memory and between the buffer memory and the cache there is a ratio of speed for transferring the information from the recording medium to the buffer memory and a speed for transferring the information from the buffer memory to the cache of 1:n (1.ltoreq.n). A buffer controller instructs such that the information of the request track is transferred from the buffer memory to the cache at the first transfer enabled time occurring when at least (1-1
) of all of the information of the request track in said buffer memory is transferred from the recording medium to the buffer memory and instructs such that the information of the pre-load track is transferred from the buffer memory to the cache at the second transfer enabled time occurring when at least (1-1
) of all of the information of the pre-load track is transferred from the recording medium to the buffer memory.

REFERENCES:
patent: 4489378 (1984-12-01), Dixon et al.
patent: 4490782 (1984-12-01), Dixon et al.
patent: 4533995 (1985-08-01), Christian et al.
patent: 4621320 (1986-11-01), Holste et al.
patent: 4860193 (1989-08-01), Bentley et al.
patent: 5239644 (1993-08-01), Seki et al.
Ryan, Thomas W. "Optimizing Cache Performance," CMG '90 Proceedings, pp. 27-37. (English).

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