Abstract
For the merits of high I/O performance and low energy consumption, SSDs have been widely deployed as the host-side cache devices for backend storage to improve the hosted virtual machines’ I/O performance. But in today’s host-side SSD cache, the cache behavior and flash memory are managed individually, without knowing each other’s internal information. This semantic gap not only makes host-side cache inefficient, but also shortens cache device’s lifetime. Additionally, prior studies point out that host-side cache contains much duplicate data. This will further worsen the situation. In this paper, we try to refactor the cache architecture by integrating the management of cache behavior and flash memory to remove the semantic gap. Moreover, data deduplication is applied to improve the usage efficiency of cache device. Compared with conventional host-side caches, experiments show our proposed cache architecture can generate great improvements on I/O performance and device’s lifetime.
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Acknowledgments
We would like to thank the anonymous reviewers for their hard work for this conference. We also appreciate the constructive comments and suggestions from the members of ARC Lab in Zhejiang University.
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Chen, X., Chen, W., Lu, Z. (2015). Fusion-Cache: A Refactored Content-Aware Host-Side SSD Cache. In: Wang, G., Zomaya, A., Martinez, G., Li, K. (eds) Algorithms and Architectures for Parallel Processing. ICA3PP 2015. Lecture Notes in Computer Science(), vol 9529. Springer, Cham. https://doi.org/10.1007/978-3-319-27122-4_21
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DOI: https://doi.org/10.1007/978-3-319-27122-4_21
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