A new sequential-write-constrained cache management to mitigate write amplification for SMR drives
學年 107
學期 2
發表日期 2019-04-08
作品名稱 A new sequential-write-constrained cache management to mitigate write amplification for SMR drives
作品名稱（其他語言）
著者 Shuo-Han Chen; Yong-Ching Lin; Yuan-Hao Chang; Ming-Chang Yang; Tseng-Yi Chen; Hsin-Wen Wei; Wei-Kuan Shih
作品所屬單位
出版者
會議名稱 The 34th ACM/SIGAPP Symposium on Applied Computing, SAC 2019
會議地點 Limassol, Cyprus,
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%.
關鍵字
語言 en_US
收錄於
會議性質 國際
校內研討會地點 無
研討會時間 20190408~20190412
通訊作者
國別 USA
公開徵稿
出版型式
出處 SAC '19 Proceedings of the 34th ACM/SIGAPP Symposium on Applied Computing, p.599-606
相關連結

機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/117410 )

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