Workstation support for real-time multimedia communication

Authors:
Olof Hagsand;Peter Sjdin
Affiliations:
Swedish Institute of Computer Science;Swedish Institute of Computer Science
Venue:
WTEC'94 Proceedings of the USENIX Winter 1994 Technical Conference on USENIX Winter 1994 Technical Conference
Year:
1994

Citing 6
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Abstract

We show how multimedia applications with real-time requirements can be supported in a distributed system. A UNIX system has been modified to give soft real-time support. The modifications include deadline-based scheduling, preemption points and prioritized interrupt processing. In addition, a system call interface for real-time application programming has been designed. We justify the modifications by experiments with a simple distributed multimedia delivery system. The experiments are made on an ATM network, where resources are reserved by means of the ST-2 internetworking protocol.