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zns-tools: An eBPF-powered, Cross-Layer Storage Profiling Tool for NVMe ZNS SSDs

Authors:

Krijn Doekemeijer,

Animesh TrivediAuthors Info & Claims

CHEOPS '24: Proceedings of the 4th Workshop on Challenges and Opportunities of Efficient and Performant Storage Systems

Pages 23 - 32

https://doi.org/10.1145/3642963.3652205

Published: 14 May 2024 Publication History

Abstract

Understanding operational characteristics of flash SSDs has been a challenging task due to their complex and closed internals. The recent emergence of Zone Namespace (ZNS) SSDs with their open interface allows the host software stack to explicitly control elements of this complexity, specifically around data placement, grouping, and garbage collection operations. Despite offering more control to applications, due to the opaque and layered nature of the software storage stack, it remains an open challenge to understand, profile, and reason about the data storage and placement decisions on ZNS devices in an end-to-end manner. In this paper, we present zns-tools, an eBPF-powered end-to-end data storage events profiler (https://github.com/stonet-research/zns-tools) for the whole ZNS-enabled storage stack, including the NVMe/ZNS device driver, Linux block layer, file system, and application. Using zns-tools we uncover diverse utilization profiles of a ZNS device for the same workload (YCSB-A), thus demonstrating the practical utility of zns-tools.

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Cited By

Doekemeijer KMaisenbacher DRen ZTehrany NBjørling MTrivedi A(2024)Exploring I/O Management Performance in ZNS with ConfZNS++Proceedings of the 17th ACM International Systems and Storage Conference10.1145/3688351.3689160(162-177)Online publication date: 16-Sep-2024
https://dl.acm.org/doi/10.1145/3688351.3689160

Index Terms

zns-tools: An eBPF-powered, Cross-Layer Storage Profiling Tool for NVMe ZNS SSDs
1. General and reference
  1. Cross-computing tools and techniques
    1. Performance
2. Software and its engineering
  1. Software organization and properties
    1. Contextual software domains
      1. Operating systems

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cover image ACM Conferences

CHEOPS '24: Proceedings of the 4th Workshop on Challenges and Opportunities of Efficient and Performant Storage Systems

April 2024

38 pages

ISBN:9798400705380

DOI:10.1145/3642963

General Chair:
Shadi Ibrahim
Inria, France
,
Program Chairs:
Suren Byna
The Ohio State University, USA
,
Amelie Chi Zhou
Hong Kong Baptist University, Hong Kong

Copyright © 2024 Owner/Author.

This work is licensed under a Creative Commons Attribution International 4.0 License.

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Published: 14 May 2024

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Doekemeijer KMaisenbacher DRen ZTehrany NBjørling MTrivedi A(2024)Exploring I/O Management Performance in ZNS with ConfZNS++Proceedings of the 17th ACM International Systems and Storage Conference10.1145/3688351.3689160(162-177)Online publication date: 16-Sep-2024
https://dl.acm.org/doi/10.1145/3688351.3689160

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