Interposing Flash between Disk and DRAM to Save Energy for Streaming Workloads

Research output: Book/ReportReportProfessional

2 Citations (Scopus)
45 Downloads (Pure)

Abstract

In computer systems, the storage hierarchy, composed of a disk drive and a DRAM, is responsible for a large portion of the total energy consumed. This work studies the energy merit of interposing flash memory as a streaming buffer between the disk drive and the DRAM. Doing so, we extend the spin-off period of the disk drive and cut down on the DRAM capacity at the cost of (extra) flash. We study two different streaming applications: mobile multimedia players and media servers. Our simulated results show that for light workloads, a system with a flash as a buffer between the disk and the DRAM consumes up to 40% less energy than the same system without a flash buffer. For heavy workloads savings of at least 30% are possible. We also address the wear-out of flash and present a simple solution to extend its lifetime.
Original languageUndefined
Place of PublicationEnschede
PublisherDistributed and Embedded Security (DIES)
Number of pages15
Publication statusPublished - 30 Jun 2007

Publication series

NameCTIT Technical Report Series
PublisherCentre for Telematics and Information Technology, University of Twente
No.P2773/TR-CTIT-07-43
ISSN (Print)1381-3625

Keywords

  • IR-64158
  • EWI-10398
  • METIS-242182

Cite this

Khatib, M. G., van der Zwaag, B. J., Hartel, P. H., & Smit, G. J. M. (2007). Interposing Flash between Disk and DRAM to Save Energy for Streaming Workloads. (CTIT Technical Report Series; No. P2773/TR-CTIT-07-43). Enschede: Distributed and Embedded Security (DIES).
Khatib, M.G. ; van der Zwaag, B.J. ; Hartel, Pieter H. ; Smit, Gerardus Johannes Maria. / Interposing Flash between Disk and DRAM to Save Energy for Streaming Workloads. Enschede : Distributed and Embedded Security (DIES), 2007. 15 p. (CTIT Technical Report Series; P2773/TR-CTIT-07-43).
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Khatib, MG, van der Zwaag, BJ, Hartel, PH & Smit, GJM 2007, Interposing Flash between Disk and DRAM to Save Energy for Streaming Workloads. CTIT Technical Report Series, no. P2773/TR-CTIT-07-43, Distributed and Embedded Security (DIES), Enschede.

Interposing Flash between Disk and DRAM to Save Energy for Streaming Workloads. / Khatib, M.G.; van der Zwaag, B.J.; Hartel, Pieter H.; Smit, Gerardus Johannes Maria.

Enschede : Distributed and Embedded Security (DIES), 2007. 15 p. (CTIT Technical Report Series; No. P2773/TR-CTIT-07-43).

Research output: Book/ReportReportProfessional

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N2 - In computer systems, the storage hierarchy, composed of a disk drive and a DRAM, is responsible for a large portion of the total energy consumed. This work studies the energy merit of interposing flash memory as a streaming buffer between the disk drive and the DRAM. Doing so, we extend the spin-off period of the disk drive and cut down on the DRAM capacity at the cost of (extra) flash. We study two different streaming applications: mobile multimedia players and media servers. Our simulated results show that for light workloads, a system with a flash as a buffer between the disk and the DRAM consumes up to 40% less energy than the same system without a flash buffer. For heavy workloads savings of at least 30% are possible. We also address the wear-out of flash and present a simple solution to extend its lifetime.

AB - In computer systems, the storage hierarchy, composed of a disk drive and a DRAM, is responsible for a large portion of the total energy consumed. This work studies the energy merit of interposing flash memory as a streaming buffer between the disk drive and the DRAM. Doing so, we extend the spin-off period of the disk drive and cut down on the DRAM capacity at the cost of (extra) flash. We study two different streaming applications: mobile multimedia players and media servers. Our simulated results show that for light workloads, a system with a flash as a buffer between the disk and the DRAM consumes up to 40% less energy than the same system without a flash buffer. For heavy workloads savings of at least 30% are possible. We also address the wear-out of flash and present a simple solution to extend its lifetime.

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Khatib MG, van der Zwaag BJ, Hartel PH, Smit GJM. Interposing Flash between Disk and DRAM to Save Energy for Streaming Workloads. Enschede: Distributed and Embedded Security (DIES), 2007. 15 p. (CTIT Technical Report Series; P2773/TR-CTIT-07-43).