Method and means for dynamic cache management by variable space

Details Method and means for dynamic cache management by variable space Method and means for dynamic cache management by variable space

1993-05-19

1996-03-12

Chan, Eddie

Boots, shoes, and leggings

395440, 395463, 364DIG1, 36424341, 36424612, G06F 1202

Patent

active

054993547

ABSTRACT:
Dynamic allocation of read cache space is allocated among bands of DASD cylinders rather than to data sets or processes as a function of a weighted average hit ratio to the counterpart cache space. Upon the hit ratio falling below a predetermined threshold, the bands are disabled for a defined interval as measured by cache accesses and then rebound to cache space again.

REFERENCES:
patent: 4399503 (1983-08-01), Hawley
patent: 4463424 (1984-07-01), Mattson et al.
patent: 4499539 (1985-02-01), Vosacek
patent: 4503501 (1985-03-01), Coulson et al.
patent: 4920478 (1990-04-01), Furuya
patent: 5131087 (1992-07-01), Warr
patent: 5325499 (1994-06-01), Kummer et al.

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