Title
A Novel Weighted-Graph-Based Grouping Algorithm for Metadata Prefetching
Abbreviated Journal Title
IEEE Trans. Comput.
Keywords
Prefetch; algorithm; metadata; storage; Computer Science, Hardware & Architecture; Engineering, Electrical &; Electronic
Abstract
Although data prefetching algorithms have been extensively studied for years, there is no counterpart research done for metadata access performance. Existing data prefetching algorithms, either lack of emphasis on group prefetching, or bearing a high level of computational complexity, do not work well with metadata prefetching cases. Therefore, an efficient, accurate, and distributed metadata-oriented prefetching scheme is critical to leverage the overall performance in large distributed storage systems. In this paper, we present a novel weighted-graph-based prefetching technique, built on both direct and indirect successor relationship, to reap performance benefit from prefetching specifically for clustered metadata servers, an arrangement envisioned necessary for petabyte-scale distributed storage systems. Extensive trace-driven simulations show that by adopting our new metadata prefetching algorithm, the miss rate for metadata accesses on the client site can be effectively reduced, while the average response time of metadata operations can be dramatically cut by up to 67 percent, compared with legacy LRU caching algorithm and existing state-of-the-art prefetching algorithms.
Journal Title
Ieee Transactions on Computers
Volume
59
Issue/Number
1
Publication Date
1-1-2010
Document Type
Article
Language
English
First Page
1
Last Page
15
WOS Identifier
ISSN
0018-9340
Recommended Citation
"A Novel Weighted-Graph-Based Grouping Algorithm for Metadata Prefetching" (2010). Faculty Bibliography 2010s. 202.
https://stars.library.ucf.edu/facultybib2010/202
Comments
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