ConfZNS: A Novel Emulator for Exploring Design Space of ZNS SSDs

Inho Song, Myounghoon Oh, Bryan Suk Joon Kim, Seehwan Yoo, Jaedong Lee, Jongmoo Choi

Research output: Chapter in Book/Entry/PoemConference contribution

2 Scopus citations

Abstract

The ZNS (Zoned NameSpace) interface shifts much of the storage maintenance responsibility to the host from the underlying SSDs (Solid-State Drives). In addition, it opens a new opportunity to exploit the internal parallelism of SSDs at both hardware and software levels. By orchestrating the mapping between zones and SSD-internal resources and by controlling zone allocation among threads, ZNS SSDs provide a distinct performance trade-off between parallelism and isolation. To understand and explore the design space of ZNS SSDs, we present ConfZNS (Configurable ZNS), an easy-to-configure and timing-accurate emulator based on QEMU. ConfZNS allows users to investigate a variety of ZNS SSD's internal architecture and how it performs with existing host software. We validate the accuracy of ConfZNS using real ZNS SSDs and explore performance characteristics of different ZNS SSD designs with real-world applications such as RocksDB, F2FS, and Docker environment.

Original languageEnglish (US)
Title of host publicationProceedings of the 16th ACM International Conference on Systems and Storage, SYSTOR 2023
PublisherAssociation for Computing Machinery, Inc
Pages71-82
Number of pages12
ISBN (Electronic)9781450399623
DOIs
StatePublished - Jun 5 2023
Event16th ACM International Conference on Systems and Storage, SYSTOR 2023 - Haifa, Israel
Duration: Jun 5 2023Jun 7 2023

Publication series

NameProceedings of the 16th ACM International Conference on Systems and Storage, SYSTOR 2023

Conference

Conference16th ACM International Conference on Systems and Storage, SYSTOR 2023
Country/TerritoryIsrael
CityHaifa
Period6/5/236/7/23

Keywords

  • emulation
  • latency model
  • solid-state drives
  • zoned namespace

ASJC Scopus subject areas

  • Computer Science Applications
  • Hardware and Architecture
  • Software
  • Electrical and Electronic Engineering

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