Reptail : Cutting Storage Tail Latency with Inherent Redundancy

Research output: Conference Papers (RGC: 31A, 31B, 32, 33)32_Refereed conference paper (no ISBN/ISSN)peer-review

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Detail(s)

Original languageEnglish
Publication statusPublished - 5 Dec 2021

Conference

TitleThe 58th Design Automation Conference (DAC)
LocationMoscone West
PlaceUnited States
CitySan Francisco
Period5 - 9 December 2021

Abstract

Mission-critical edge applications require both low latency and strict data safety. Although emerging ultra-dense SSDs can extend the amount of data edge servers can process, the reduced parallelism can worsen read tail latency and violate deadlines. To cut ultra-dense SSDs’ read tail latency, we propose Reptail, a co-design of host OS and SSD, that exploits the inherent redundancy in transactional systems. We use journaling file system to show how exposing SSD to host OS’s redundancy semantics can improve its read scheduling. We evaluate Reptail with diverse workloads and find more than 20% latency improvements in the 95th and 99th percentile.

Bibliographic Note

Since this conference is yet to commence, the information for this record is subject to revision. Research Unit(s) information for this publication is provided by the author(s) concerned.

Citation Format(s)

Reptail : Cutting Storage Tail Latency with Inherent Redundancy. / Chen, Yun-Chih; Wu, Chun-Fung; Chang, Yuan-Hao; Kuo, Tei-Wei.

2021. Paper presented at The 58th Design Automation Conference (DAC), San Francisco, United States.

Research output: Conference Papers (RGC: 31A, 31B, 32, 33)32_Refereed conference paper (no ISBN/ISSN)peer-review