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Disk drive energy optimization for audio-video applications

Published: 22 September 2004 Publication History

Abstract

Earlier techniques for low power speed control in disk drives running audio/video applications attempted to either match the drive's speed to the data rate requirement of the host application (just-in-time speed), or run it at the maximum drive speed, neither of which are energy-optimal in general. Starting from the theory of DC motors, we obtain a high-level power model of a disk drive. We then analytically obtain the speed profile (function of time) that minimizes the energy required to transfer a given amount of data from/to the drive, in a given amount of time. Based on a power model obtained by measurement from a commercial optical drive, it is estimated that the proposed speed control technique consumes 79\%, 70\% and 50\% less energy for VCD, SVCD and DVD video playback, respectively, when compared to existing just-in-time CLV techniques. This work also provides an analytical framework to understand earlier observations that buffering multimedia data and employing CAV mode in disk drives is more energy-efficient.

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cover image ACM Conferences
CASES '04: Proceedings of the 2004 international conference on Compilers, architecture, and synthesis for embedded systems
September 2004
324 pages
ISBN:1581138903
DOI:10.1145/1023833
Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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Publication History

Published: 22 September 2004

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Author Tags

  1. disk drive
  2. low power
  3. multimedia
  4. speed control

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  • (2014)Balancing disk energy against reliability in video playbackMultimedia Systems10.1007/s00530-013-0305-520:1(25-43)Online publication date: 1-Feb-2014
  • (2012)Saving Energy in Video Servers by the Use of Multispeed DisksIEEE Transactions on Circuits and Systems for Video Technology10.1109/TCSVT.2011.217011222:4(567-580)Online publication date: 1-Apr-2012
  • (2008)Adaptive disk power management for portable media playersIEEE Transactions on Consumer Electronics10.1109/TCE.2008.471123154:4(1755-1760)Online publication date: 1-Nov-2008
  • (2008)Energy-aware disk scheduling for soft real-time I/O requestsMultimedia Systems10.1007/s00530-007-0107-813:5-6(409-428)Online publication date: 1-Feb-2008
  • (2007)Energy optimal speed control of a producer--consumer device pairACM Transactions on Embedded Computing Systems10.1145/1274858.12748686:4(30-es)Online publication date: 1-Sep-2007
  • (2006)Energy-Optimal Speed Control of a Generic DeviceIEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems10.1109/TCAD.2006.88259825:12(2737-2746)Online publication date: 1-Dec-2006
  • (2005)Energy optimal speed control of devices with discrete speed setsProceedings of the 42nd annual Design Automation Conference10.1145/1065579.1065815(901-904)Online publication date: 13-Jun-2005
  • (2004)Energy optimization for a two-device data flow chainProceedings of the 2004 IEEE/ACM International conference on Computer-aided design10.1109/ICCAD.2004.1382585(268-274)Online publication date: 7-Nov-2004

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