Electronic libraries and optical jukebox server scheduling

Patrick E. Mantey; David E. Levy

doi:10.1117/12.58516

1 April 1992 Electronic libraries and optical jukebox server scheduling

Patrick E. Mantey, David E. Levy

Proceedings Volume 1662, Image Storage and Retrieval Systems; (1992) https://doi.org/10.1117/12.58516
Event: SPIE/IS&T 1992 Symposium on Electronic Imaging: Science and Technology, 1992, San Jose, CA, United States

Abstract

The economics of large electronic libraries requires a hierarchy of storage devices, where the lowest level contains the most data and has the poorest performance characteristics. In today''s electronic library systems, this is the role of the optical jukebox. Performance obtainable from an electronic library is a function of many system and application characteristics. We are addressing performance of client/server libraries where retrieval is the primary interaction of users with the library. When the documents to be retrieved reside on the optical media managed by the jukebox server, and nowhere else in the hierarchy, then the retrieval of these documents becomes a batch task. This is acceptable for many users and applications environments: for professionals who are simultaneously at various stages of many tasks and can anticipate the next ones, and for clerical workers in an environment controlled by work- flow (and not interrupt driven). Scheduling of batch retrievals of documents from archival storage need not be in the same order as requests. This paper proposes a cyclic scheduling for retrieval of documents from the optical jukebox, and shows by simulation that this cyclic scheduling can offer significant performance improvement over that obtained by FCFS scheduling of the jukebox.

Citation Download Citation

Patrick E. Mantey and David E. Levy "Electronic libraries and optical jukebox server scheduling", Proc. SPIE 1662, Image Storage and Retrieval Systems, (1 April 1992); https://doi.org/10.1117/12.58516

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