Method and apparatus for reducing false invalidations in distrib

Details Method and apparatus for reducing false invalidations in distrib Method and apparatus for reducing false invalidations in distrib

1993-09-01

1996-12-31

Chan, Eddie P.

395457, G06F 1212

Patent

active

055903088

ABSTRACT:
A distributed file system controls memory allocation between a global cache shared storage memory unit and a plurality of local cache memory units by calculating a variable global cache LRU stack update interval. A new update interval is calculated using fresh system statistics at the end of each update interval. A stack update command is issued at the end of the update interval only if the expected minimum data residency time in the global cache shared memory is less than or equal to the expected average residency time in the local cache memory.

REFERENCES:
patent: 4843542 (1989-06-01), Dashiell et al.
patent: 4928225 (1990-05-01), McCarthy et al.
L. Liu, "Increasing Hit Ratios in Second Level Caches and Reducing the Size of Second Level Storage," IBM Technical Disclosure Bulletin, vol. 27, No. 1A, Jun. 1984, pp. 334-337.

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