Abstract
Flash disks are being widely used as an important alternative to conventional magnetic disks, although accessed through the same interface by applications, their distinguished feature, i.e., different read and write cost makes it necessary to reconsider the design of existing replacement algorithms to leverage their performance potential.
We propose an adaptive cost-aware replacement policy based on average hit distance (AHD) to control the movement of buffer pages when hits occur, thus pages that are re-visited within AHD will stay still. Such a mechanism makes our method adaptive to workloads of different access patterns. The experimental results show that our method not only adaptively tunes itself to workloads of different access patterns, but also works well for different kind of flash disks compared with existing methods.
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Tang, X., Li, N., Ma, Q. (2016). ABR: An Optimized Buffer Replacement Algorithm for Flash Storage Devices. In: Che, W., et al. Social Computing. ICYCSEE 2016. Communications in Computer and Information Science, vol 623. Springer, Singapore. https://doi.org/10.1007/978-981-10-2053-7_14
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DOI: https://doi.org/10.1007/978-981-10-2053-7_14
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