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DTFS: exploiting the similarity of data versions to design a write-efficient file system in phase-change memory

Published: 24 March 2014 Publication History

Abstract

Phase-change memory (PCM) has emerged as one of the most promising technologies to incorporate into the storage hierarchy of future computer systems. However, PCM has critical weaknesses in performing write operations. Specifically, the access latency and the energy consumption that occur during a write operation are about 6--10 times larger than those of a read operation in PCM. To cope with this situation, we analyze the write access characteristics of file systems, and observe that a large percentage of file write I/Os incurs small changes from the previous version. Based on this observation, we design a novel file system for PCM called DTFS (dual-tree file system) that incurs minimal writes to PCM. DTFS performs better than legacy file systems, but its reliability is as high as any file systems based on journaling or copy-on-write. Experiments with various workload conditions show that DTFS improves the file system performance and the energy consumption by 47% and 67% on average, respectively, compared to copy-on-write file systems such as ZFS and BtrFS.

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  • (2019)A high-performance and endurable SSD cache for parity-based RAIDFrontiers of Computer Science: Selected Publications from Chinese Universities10.1007/s11704-017-6523-913:1(16-34)Online publication date: 1-Feb-2019
  • (2016)Eliminating Periodic Flush Overhead of File I/O with Non-Volatile Buffer CacheIEEE Transactions on Computers10.1109/TC.2014.234952565:4(1145-1157)Online publication date: 1-Apr-2016
  • (2016)Improving RAID Performance Using an Endurable SSD Cache2016 45th International Conference on Parallel Processing (ICPP)10.1109/ICPP.2016.52(396-405)Online publication date: Aug-2016

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cover image ACM Conferences
SAC '14: Proceedings of the 29th Annual ACM Symposium on Applied Computing
March 2014
1890 pages
ISBN:9781450324694
DOI:10.1145/2554850
Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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Publication History

Published: 24 March 2014

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Author Tags

  1. file system
  2. non-volatile memory
  3. phase-change memory
  4. reliability
  5. storage system

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SAC 2014: Symposium on Applied Computing
March 24 - 28, 2014
Gyeongju, Republic of Korea

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SAC '14 Paper Acceptance Rate 218 of 939 submissions, 23%;
Overall Acceptance Rate 1,650 of 6,669 submissions, 25%

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Cited By

View all
  • (2019)A high-performance and endurable SSD cache for parity-based RAIDFrontiers of Computer Science: Selected Publications from Chinese Universities10.1007/s11704-017-6523-913:1(16-34)Online publication date: 1-Feb-2019
  • (2016)Eliminating Periodic Flush Overhead of File I/O with Non-Volatile Buffer CacheIEEE Transactions on Computers10.1109/TC.2014.234952565:4(1145-1157)Online publication date: 1-Apr-2016
  • (2016)Improving RAID Performance Using an Endurable SSD Cache2016 45th International Conference on Parallel Processing (ICPP)10.1109/ICPP.2016.52(396-405)Online publication date: Aug-2016

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