Journal of KIISE:Computing Practices and Letters (한국정보과학회논문지:컴퓨팅의 실제 및 레터)

Korean Institute of Information Scientists and Engineers (한국정보과학회)
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Low-power Buffer Cache Management for Mixed HDD and SSD Storage Systems

HDD와 SSD의 혼합형 저장 시스템을 위한 절전형 버퍼 캐쉬 관리

  • 강효정 (이화여자대학교 컴퓨터공학과) ;
  • 박준석 (서울대학교 컴퓨터공학부) ;
  • 고건 (서울대학교 컴퓨터공학부) ;
  • 반효경 (이화여자대학교 컴퓨터공학과)
  • Received : 2009.12.24
  • Accepted : 2010.02.10
  • Published : 2010.04.15
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Abstract

A new buffer cache management scheme that aims at reducing power consumption in mixed HDD and NAND flash memory storage systems is presented. The proposed scheme reduces power consumption by considering different energy-consumption rate of storage devices, I/O operation type (read or write), and reference potential of cached blocks in terms of both recency and frequency. Simulation shows that the proposed scheme reduces power consumption by 18.0% on average and up to 58.9%.

본 논문은 하드디스크와 NAND 플래시메모리를 동시에 사용하는 저장 시스템 환경에서 전력 소모를 최소화하는 버퍼 캐쉬 관리 기법을 제안한다. 저장장치별 전력 소모율과 입출력 연산 종류(읽기 또는 쓰기) 및 블록의 재참조 가능성(최근성 및 빈도)을 통합적으로 고려하는 버퍼 캐쉬 관리 기법의 설계로 저장 시스템의 전력 소모량을 평균 18.0%, 최대 58.9%까지 줄일 수 있음을 보인다.

Keywords

Acknowledgement

Supported by : 한국연구재단

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