Method and apparatus for disc drive buffer segment management

Details Method and apparatus for disc drive buffer segment management Method and apparatus for disc drive buffer segment management

2005-09-06

2005-09-06

Nguyen, T (Department: 2187)

Electrical computers and digital processing systems: memory

Storage accessing and control

Specific memory composition

C711S111000, C711S167000, C710S052000, C710S056000

Reexamination Certificate

active

06941419

ABSTRACT:
Aspects of the invention include a method and apparatus to manage the cache memory of a disc drive. In one aspect the data rates of different file read and write threads are used to determine the minimum seek time to allow the cache to be used more efficiently. In another aspect, the read/write cache segments are adjusted by determining the summation of the ratio between read/write cache segment sizes and the respective data rates and then adjusting the segment sizes to minimize the seek times for the data streams.

REFERENCES:
patent: 5276662 (1994-01-01), Shaver et al.
patent: 5594926 (1997-01-01), Chang et al.
patent: 5636188 (1997-06-01), Funahashi
patent: 5689653 (1997-11-01), Karp et al.
patent: 6330640 (2001-12-01), Williams et al.
Williams, et al., U.S. Appl. No. 09/696,861, filed Oct. 26, 2000 entitledVector Buffer Management.

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