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Performance Isolation of Shared Space for Virtualized SSD based Storage Systems

  • Journal of The Korea Society of Computer and Information
  • Abbr : JKSCI
  • 2019, 24(9), pp.1-8
  • DOI : 10.9708/jksci.2019.24.09.001
  • Publisher : The Korean Society Of Computer And Information
  • Research Area : Engineering > Computer Science
  • Received : July 1, 2019
  • Accepted : August 14, 2019
  • Published : September 30, 2019

Sungho Kim 1 Jong Wook Kwak 2

1(재)경북IT융합산업기술원
2영남대학교

Accredited

ABSTRACT

In this paper, we propose a performance isolation of shared space for virtualized SSD based storage systems, to solve the weakness in a VSSD framework. The proposed scheme adopts a CFQ scheduler and a shared space-based FTL for the fairness and the performance isolation for multiple users on virtualized SSD based storage systems. Using the CFQ scheduler, we ensure SLOs for the storage systems such as a service time, a allocated space, and a IO latency for users on the virtualized storage systems. In addition, to improve a throughput and reduce a computational latency for garbage collection, a shared space-based FTL is adopted to maintain the information of SLOs for users and it manages shared spaces among the users. In our experiments, the proposal improved the throughput of garbage collection by 7.11%, on average, and reduced the computational latency for garbage collection by 9.63% on average, compared to the previous work.

Citation status

* References for papers published after 2023 are currently being built.

This paper was written with support from the National Research Foundation of Korea.