DocumentCode :
1612105
Title :
Adaptive real-time file handling in local area networks
Author :
Wedde, Horst F. ; Alijani, G.S. ; Baran, Dorota ; Kang, Gookhai ; Kim, Bo-Kyung
Author_Institution :
Dept. of Comput. Sci., Wayne State Univ., Detroit, MI, USA
fYear :
1989
Firstpage :
153
Lastpage :
161
Abstract :
Current and future needs in building adaptive real-time systems are analyzed and a series of design requirements for their hardware/interconnection, operating system, and application levels are formulated. The major features of the corresponding integrated system design model are described. On the operating system level, services are rendered by the DRAGON SLAYER distributed operating system to both meet real-time constraints and provide for high availability in a hazardous environment. It also allows for replicating, relocating, or deleting file copies. Such copies may also assume a different status regarding the recency of their information. Depending on the deadline failure history, status changes as well as file replication, deletion, or relocation are analyzed and managed by local file assigners, based on cost and time delay criteria. Also reported is a sensitivity study that shows how promptly the model file system reacts to changing environmental situations (changing request patterns). Findings are discussed, and future work is outlined
Keywords :
adaptive systems; distributed processing; file organisation; local area networks; network operating systems; real-time systems; DRAGON SLAYER distributed operating system; adaptive real-time systems; application level design; availability; changing environmental situations; cost criteria; deadline failure history; design requirements; file deletion; file handling; file relocation; file replication; hardware design; hazardous environment; integrated system design model; interconnection design; local area networks; local file assigners; model file system; model reaction speed; request patterns; sensitivity; status changes; time delay criteria; Adaptive systems; Availability; Buildings; Failure analysis; Hardware; History; LAN interconnection; Local area networks; Operating systems; Real time systems;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Real Time, 1989. Proceedings., Euromicro Workshop on
Conference_Location :
Como
Print_ISBN :
0-8186-1956-2
Type :
conf
DOI :
10.1109/EMWRT.1989.43454
Filename :
43454
Link To Document :
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