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A Modified Algorithm for Buffer Cache Management
| International Journal of Computer Applications |
| Foundation of Computer Science (FCS), NY, USA |
| Volume 12 - Number 12 |
| Year of Publication: 2011 |
| Authors: Mukesh Kumar Chaudhary, Manoj Kumar, Mayank Rai, Rajendra Kumar Dwivedi |
10.5120/1733-2351
|
Mukesh Kumar Chaudhary, Manoj Kumar, Mayank Rai, Rajendra Kumar Dwivedi . A Modified Algorithm for Buffer Cache Management. International Journal of Computer Applications. 12, 12 ( January 2011), 47-49. DOI=10.5120/1733-2351
Abstract
A fundamental challenge in improving file system performance is to design effective block replacement algorithms to minimize buffer cache misses. In this paper an algorithm is proposed for buffer cache management with prefetching. The buffer cache contains two units, the main cache unit and prefetch unit. The sizes of both the units are fixed. The total sizes of both the units are a constant. Blocks are fetched in one block look ahead prefetch principle. The block placement and replacement policies are defined. The replacement strategy depends on the most recently accessed block and the defined miss count percentage or hit count percentage of the blocks. FIFO algorithm is used for the prefetch unit.
References
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