한국컴퓨터정보학회논문지 (Journal of the Korea Society of Computer and Information)

  • 제24권9호
  • /
  • Pages.1-8
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  • 2019
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  • 1598-849X(pISSN)
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  • 2383-9945(eISSN)
한국컴퓨터정보학회 (Korean Society of Computer Information)
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Performance Isolation of Shared Space for Virtualized SSD based Storage Systems

  • Kim, Sungho (Software Research Team, Gyeongbuk Institute of IT Convergence Industry Technology (GITC)) ;
  • Kwak, Jong Wook (Dept. of Computer Engineering, Yeungnam University)
  • 투고 : 2019.07.01
  • 심사 : 2019.08.14
  • 발행 : 2019.09.30
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초록

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.

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참고문헌

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