Run-Time Optimization of Heterogeneous Media Access in a Multimedia Server
نویسندگان
چکیده
Discrete media (DM) data throughput is vital to systems that need to support the heterogeneity and variety of data found in interactive hypermedia and digital library applications. Therefore, a multimedia server's ability in delivering a high DM data throughput without degrading its CM data throughput deserves more attention. In this paper, we address this issue by optimizing the use of disk bandwidth spent on CM service at run-time and redirecting the saved bandwidth to service DM requests. Based on a new cost model of disk access incurred in CM service, we formulate strategies to control the size of each disk read at run time. These strategies improve the efficiency of each disk access and improve the DM data throughput of a multimedia server, without jeopardizing the CM throughput. Through experimental evaluations, the improvements achieved are demonstrated. Furthermore, efficient control of the allocation of disk bandwidth between DM and CM services over a wide range is also demonstrated.
منابع مشابه
An Integrated Videoconferencing System for Heterogeneous Multimedia Collaboration
We have developed an integrated conferencing system, Global Multimedia Collaboration System, which enables heterogeneous multimedia clients to join the same real-time sessions. Our system provides support for a variety of protocols and applications, including H.323 clients, SIP clients and Access Grid rooms. In this paper, we would like to show the features and design principles of our conferen...
متن کاملA generic platform for scalable access to multimedia-on-demand systems
Access to multimedia servers is commonly done according to a client/server model where the end user at the client host retrieves multimedia objects from a multimedia server. In a distributed environment, a number of end users may need to access to a number of multimedia servers through one or several communication networks. Such a scenario reveals the requirement for a distributed access platfo...
متن کاملMedia Resource Adaptation for Multimedia Services and Streaming Media for Mobile Telephones
Nowadays an intensive diversification can be experienced among the devices that can display multimedia content to the user. Typically, clients are unable to receive large audio-visual data volumes in original quality because of resource limitations and deficiency of terminal capabilities. The aim of media resource adaptation is to provide multimedia items for users in a format that is most appr...
متن کاملFlexible Server Architecture for Optimal Presentation of Internet Multimedia Streams at the Client
The transfer of live media streams such as video and audio over the Internet is subject to several problems, static and dynamic by nature. Important quality of service (QoS) parameters do not only differ between various receivers depending on their network access, their service provider, and their nationality, the QoS is also variable in time. Moreover the installed receiver base is heterogeneo...
متن کاملVirtualMedia: Making Multimedia Database Systems Fit for World-Wide Access
In the age of the world-wide web global media data—often called media assets—, stored in multimedia database management systems (MM-DBMS), will increasingly be made accessible to virtually everyone. Hence, lots of heterogeneous clients with different, not safely predictable capabilities of storing, processing, and presenting media data are willing to access these MM-DBMSs (which may be part of ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- IEEE Trans. Multimedia
دوره 2 شماره
صفحات -
تاریخ انتشار 2000