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An Integrated File System for Guaranteeing the Quality of Service of Multimedia Stream  

김태석 (서울대학교 컴퓨터공학부)
박경민 ((주)삼성전자)
최정완 (LG전자 기술원)
김두한 ((주)삼성전자)
원유집 (한양대학교 전기전자컴퓨터공학부)
고건 (서울대학교 컴퓨터공학부)
박승민 (한국전자통신연구원 임베디드 S/W 기술센터)
김정기 (한국전자통신연구원 임베디드 S/W 기술센터)
Publication Information
Journal of KIISE:Computer Systems and Theory / v.31, no.9, 2004 , pp. 527-535 More about this Journal
Abstract
Handling mixed workload in digital set-top box or streaming server becomes an important issue as integrated file system gets momentum as the choice for the next generation file system. The next generation file system is required to handle real-time audio/video playback while being able to handle text requests such as web page, image file, etc. Legacy file system provides only best effort I/O service and thus cannot properly support the QoS of soft real-time I/O. In this paper, we would like to present our experience in developing the file system which fan guarantee the QoS of multimedia stream. We classify all application I/O requests into two category: periodic I/O and sporadic I/O. The QoS requirement of multimedia stream could be guaranteed by giving a higher priority to periodic requests than sporadic requests. The proto-type file system(Qosfs) is developed on Linux Operating System.
Keywords
disk scheduling; multimedia services; the QoS guarantee;
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