A new sequential-write-constrained cache management to mitigate write amplification for SMR drives

Shuo Han Chen, Yong Ching Lin, Yuan Hao Chang, Ming Chang Yang, Tseng Yi Chen, Hsin Wen Wei, Wei Kuan Shih

研究成果: 書貢獻/報告類型會議論文篇章同行評審

7 引文 斯高帕斯(Scopus)

摘要

Shingled magnetic recording (SMR) is regarded as a promising solution for fulfilling the capacity requirement of next-generation big data applications. However, due to the sequential-write constraint of SMR drives, random-write requests could only be achieved via read-merge-write (RMW) operations, which leads to a huge amount of write amplification. SMR drives nowadays employ an on-disk persistent cache area for absorbing random-write traffic. Nevertheless, the on-disk persistent cache area cannot absorb duplicate write traffic via overwriting due to the sequential-write constraint. Such observation motivates us to propose a sequential-write-constrained cache (SWC2) management to mitigate the write amplification issue of SMR drives. The proposed strategy is implemented within the Linux system and the experimental results show that the amount of write amplification can be reduced by an average of 52.27%.

原文???core.languages.en_GB???
主出版物標題Proceedings of the ACM Symposium on Applied Computing
發行者Association for Computing Machinery
頁面599-606
頁數8
ISBN(列印)9781450359337
DOIs
出版狀態已出版 - 2019
事件34th Annual ACM Symposium on Applied Computing, SAC 2019 - Limassol, Cyprus
持續時間: 8 4月 201912 4月 2019

出版系列

名字Proceedings of the ACM Symposium on Applied Computing
Part F147772

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???event.eventtypes.event.conference???34th Annual ACM Symposium on Applied Computing, SAC 2019
國家/地區Cyprus
城市Limassol
期間8/04/1912/04/19

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