Title :
SEOF: an adaptable object prefetch policy for object-oriented database systems
Author :
Ahn, Jung-Ho ; Kim, Hyoung-Joo
Author_Institution :
Dept. of Comput. Eng., Seoul Nat. Univ., South Korea
Abstract :
The performance of object access can be drastically improved by an efficient object prefetch policy. In this paper, we present a new prefetch policy, called Selective Eager Object Fetch (SEOF), which prefetches objects only from selected candidate pages without using any high-level object semantics. Our policy considers both the correlations and the frequencies of fetching objects. Unlike existing prefetch policies, this policy utilizes the memory and the swap space of clients efficiently without resource exhaustion. Furthermore, the proposed policy has good adaptability to both the effectiveness of clustering and the database size. We show the performance of the proposed policy through experiments over various multi-client system configurations
Keywords :
buffer storage; client-server systems; distributed databases; object-oriented databases; paged storage; scheduling; software performance evaluation; SEOF; Selective Eager Object Fetch; adaptable object prefetch policy; candidate pages; client memory; client swap space; clustering effectiveness; correlations; database size; frequencies; multi-client system configurations; object access performance; object-oriented database systems; resource use; Access protocols; CADCAM; Computer aided manufacturing; Computer aided software engineering; Data models; Database systems; Frequency; Multimedia databases; Object oriented databases; Prefetching;
Conference_Titel :
Data Engineering, 1997. Proceedings. 13th International Conference on
Conference_Location :
Birmingham
Print_ISBN :
0-8186-7807-0
DOI :
10.1109/ICDE.1997.581734