A flash-aware buffering scheme using on-the-fly redo
- Authors
- Jeong, Kyosung; Kim, Sang-Wook; Lim, Sungchae
- Issue Date
- Oct-2015
- Publisher
- Association for Computing Machinery
- Keywords
- Buffer scheme; Checkpointing; Database recovery; Flash storage
- Citation
- International Conference on Information and Knowledge Management, Proceedings, v.19-23-Oct-2015, pp.1683 - 1686
- Indexed
- SCOPUS
- Journal Title
- International Conference on Information and Knowledge Management, Proceedings
- Volume
- 19-23-Oct-2015
- Start Page
- 1683
- End Page
- 1686
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/156188
- DOI
- 10.1145/2806416.2806587
- ISSN
- 0000-0000
- Abstract
- In this paper, we address how to reduce the amount of page updates in flash-based DBMS equipped with SSD (solid state drive). We propose a novel buffering scheme that evicts a dirty page X without flushing it into SSD, and restores the right image of X when X is requested for later access. The restoration of X having previous flushing-less eviction is performed through our online redo actions on X. We call this page-restoring online redo the on-the-fly redo. Although our on-the-fly redo mechanism has some overhead of increasing the number of page reads, this can be compensated by infrequent page updates. Additionally, since the proposed buffering scheme with the on-the-fly redo can easily support the no-steal policy in buffer management, we can enjoy the advantages of smaller logging overhead and faster recovery. Through the TPC-C benchmarks using a Berkeley DB, we show that our scheme shortens the transaction processing times by up to 53%.
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