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

doi:10.1145/3297280.3297336

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

Department of Computer Science and Information Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

5 Scopus citations

Abstract

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%.

Original language	English
Title of host publication	Proceedings of the ACM Symposium on Applied Computing
Publisher	Association for Computing Machinery
Pages	599-606
Number of pages	8
ISBN (Print)	9781450359337
DOIs	https://doi.org/10.1145/3297280.3297336
State	Published - 2019
Event	34th Annual ACM Symposium on Applied Computing, SAC 2019 - Limassol, Cyprus Duration: 8 Apr 2019 → 12 Apr 2019

Publication series

Name	Proceedings of the ACM Symposium on Applied Computing
Volume	Part F147772

Conference

Conference	34th Annual ACM Symposium on Applied Computing, SAC 2019
Country/Territory	Cyprus
City	Limassol
Period	8/04/19 → 12/04/19

Keywords

Sequential-write-constrained cache
SMR drives
Write amplification

Access to Document

10.1145/3297280.3297336

Cite this

Chen, S. H., Lin, Y. C., Chang, Y. H., Yang, M. C., Chen, T. Y., Wei, H. W., & Shih, W. K. (2019). A new sequential-write-constrained cache management to mitigate write amplification for SMR drives. In Proceedings of the ACM Symposium on Applied Computing (pp. 599-606). (Proceedings of the ACM Symposium on Applied Computing; Vol. Part F147772). Association for Computing Machinery. https://doi.org/10.1145/3297280.3297336

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title = "A new sequential-write-constrained cache management to mitigate write amplification for SMR drives",

abstract = "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%.",

keywords = "Sequential-write-constrained cache, SMR drives, Write amplification",

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Chen, SH, Lin, YC, Chang, YH, Yang, MC, Chen, TY, Wei, HW & Shih, WK 2019, A new sequential-write-constrained cache management to mitigate write amplification for SMR drives. in Proceedings of the ACM Symposium on Applied Computing. Proceedings of the ACM Symposium on Applied Computing, vol. Part F147772, Association for Computing Machinery, pp. 599-606, 34th Annual ACM Symposium on Applied Computing, SAC 2019, Limassol, Cyprus, 8/04/19. https://doi.org/10.1145/3297280.3297336

A new sequential-write-constrained cache management to mitigate write amplification for SMR drives. / Chen, Shuo Han; Lin, Yong Ching; Chang, Yuan Hao et al.

Proceedings of the ACM Symposium on Applied Computing. Association for Computing Machinery, 2019. p. 599-606 (Proceedings of the ACM Symposium on Applied Computing; Vol. Part F147772).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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

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