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1998

Q-L/MRP: A Buffer Management Mechanism for QoS Support in a Multimedia DBMS

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Q-L/MRP: A Buffer Management Mechanism for QoS Support in a Multimedia DBMS
Multimedia database systems (MMDBSs) have to be capable to handle efficiently time-dependent and timeindependent data, and to support Quality-of-Service (QoS). To support continuous playout of time-dependent data, reservations of the limited resources disk I/O bandwidth and network bandwidth have to be combined with appropriate buffer management. Based on the special requirements of the DEDICATION pre-study, i.e., building a cheap prototype system for asynchronous distance education, we have designed the buffer management mechanism Q-L/MRP. QL/MRP is a buffer preloading and page replacement mechanism for multimedia applications with heterogeneous QoS requirements. Q-L/MRP extends L/MRP with two features: (1) it supports multiple concurrent users, and (2) it supports QoS with a dynamic prefetching daemon. This dynamic prefetching daemon is able to dynamically adapt to the changes in network and disk I/O load. Furthermore, QoS requirements from the users like frame rate are mapped into ...
Pål Halvorsen, Vera Goebel, Thomas Plagemann
Added 01 Nov 2010
Updated 01 Nov 2010
Type Conference
Year 1998
Where IWMMDBMS
Authors Pål Halvorsen, Vera Goebel, Thomas Plagemann
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