Adaptive prefetching for device-independent file I/O

Dan Revel; Dylan McNamee; David C. Steere; Jonathan Walpole

doi:10.1117/12.298416

29 December 1997 Adaptive prefetching for device-independent file I/O

Dan Revel, Dylan McNamee, David C. Steere, Jonathan Walpole

Proceedings Volume 3310, Multimedia Computing and Networking 1998; (1997) https://doi.org/10.1117/12.298416
Event: Photonics West '98 Electronic Imaging, 1998, San Jose, CA, United States

Abstract

Device independent I/O has been a holy grail to operating system designers since the early days of UNIX. Unfortunately, existing operating systems fall short of this goal for multimedia applications. Techniques such as caching and sequential read-ahead can help mask I/O latency in some cases, but in others they increase latency and add substantial jitter. Multimedia applications, such as video players, are sensitive to vagaries in performance since I/O latency and jitter affect the quality of presentation. Our solution uses adaptive prefetching to reduce both latency and jitter. Applications submit file access plans to the prefetcher, which then generates I/O requests to the operating system and manages the buffer cache to isolate the application from variations in device performance. Our experiments show device independence can be achieved: an MPEG video player sees the same latency when reading from a local disk or an NFS server. Moreover, our approach reduces jitter substantially.

Citation Download Citation

Dan Revel, Dylan McNamee, David C. Steere, and Jonathan Walpole "Adaptive prefetching for device-independent file I/O", Proc. SPIE 3310, Multimedia Computing and Networking 1998, (29 December 1997); https://doi.org/10.1117/12.298416

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available