Enabling Write-Reduction Strategy for Journaling File Systems over Byte-Addressable NVRAM

Tseng Yi Chen, Yuan Hao Chang, Shuo Han Chen, Chih Ching Kuo, Ming Chang Yang, 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

12 引文 斯高帕斯(Scopus)


Non-volatile random-Access memory (NVRAM) becomes a mainstream storage device in embedded systems due to its favorable features, such as small size, low power consumption, and short read/write latency. On NVRAM, a write operation consumes more energy and time than a read operation. However, current mobile/embedded file systems (e.g., EXT2/3 and EXT4) are very unfriendly for NVRAM devices. The reason is that a journaling mechanism writes the same data twice during data commitment and checkpoint. Such observations motivate this paper to design a two-phase write reduction journaling file system called wrJFS. In the first phase, wrJFS classified data into two categories: Metadata and user data. Metadata will be handled by partial byte-enabled journaling strategy, and user data will be processed in the second phase. In the second phase, user data will be compressed by hardware encoder so as to reduce the write size, and managed compressed-enabled journaling strategy to avoid the write amplification. The experimental results show that the proposed wrJFS can reduce the size of the write request by 89.7% on average, compared with the original EXT3.

主出版物標題Proceedings of the 54th Annual Design Automation Conference 2017, DAC 2017
發行者Institute of Electrical and Electronics Engineers Inc.
出版狀態已出版 - 18 6月 2017
事件54th Annual Design Automation Conference, DAC 2017 - Austin, United States
持續時間: 18 6月 201722 6月 2017


名字Proceedings - Design Automation Conference
Part 128280


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國家/地區United States


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