Abstract
A hybrid hard disk drive that uses non-volatile memory as a cache is gaining popularity because of its improved reliability and performance. We present the design and implementation of a data prefetching scheme that makes use of flash memory to reduce disk energy consumption in media players. Based on the estimated time taken to prefetch data into flash memory, we selectively determine when to spin up or down the disk in a timely manner with the aim of reducing disk energy consumption while providing real-time video playback. We implemented our scheme in MPlayer running on the Linux 2.6. Experimental results show that the disk energy consumption can be reduced between 35% and 63%, if we add a reasonable amount of flash memory to a small DRAM.
| Original language | English |
|---|---|
| Article number | 5681116 |
| Pages (from-to) | 2382-2386 |
| Number of pages | 5 |
| Journal | IEEE Transactions on Consumer Electronics |
| Volume | 56 |
| Issue number | 4 |
| DOIs | |
| State | Published - Nov 2010 |
Bibliographical note
Funding Information:1Wanhyung Ryu and Minseok Song are with School of Computer Science and Information Engineering, Inha University, Incheon, Korea (e-mail: [email protected], [email protected]). Minseok Song is a corresponding author. This work was supported by the Korea Research Foundation Grant funded by the Korean Government (MOEHRD) (KRF-2007-331-D00355) This work was partly supported by the IT R&D program of MKE/KEIT. [10035243, Component based Design Theory and Control Kernel for CPS]
Keywords
- Disk power consumption
- Flash memory
- Hybrid disk
- Portable media player
- Video playback
