Abstract
We present a soft real-time CPU server for Continuous Media processing in the UNIX environment. The server is a daemon process from which applications can request and acquire soft real-time QoS (Quality of Service) Guarantees. Our server architecture addresses in addition to other multimedia CPU scheduling extensions properties such as fairness, QoS brokerage and enforcement, and security. Overall it provides (1) protection among real-time(RT) processes, (2) fairness among RT and non-RT processes, (3) rate monotonic scheduling, and (4) a fix to the UNIX security problem. We have implemented our soft real-time CPU server in the SUN Solaris 2.5 Operating System, and we have shown through experiments that our soft RT server provides predictable QoS for continuous media applications.
This work is supported by National Science Foundation Career Grant, under contract: NSFCCR96-23867 and CISE Research Infrastructure: A Shared Distributed Facility for Multimedia Signal Processing and Visualization with Applications to Human Computer Intelligent Interaction.
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© 1997 Springer-Verlag Berlin Heidelberg
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Chu, Hh., Nahrstedt, K. (1997). A soft real time scheduling server in UNIX operating system. In: Steinmetz, R., Wolf, L.C. (eds) Interactive Distributed Multimedia Systems and Telecommunication Services. IDMS 1997. Lecture Notes in Computer Science, vol 1309. Springer, Berlin, Heidelberg. https://doi.org/10.1007/BFb0000348
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DOI: https://doi.org/10.1007/BFb0000348
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