Equus: a QoS manager for distributed applications

This paper discusses QOS management for distributed multimedia applications, focusing on end-system support. We propose a new software framework for managing resources which is composed of two key elements: the QOS management and application design models. The former has at its core a QOS manager which is responsible for admission control, QOS translation and performance monitoring. It also provides mechanisms and policies for employing dynamic adaptation to manage application access to resources. The application model is used to simplify the problems of QOS specification and re source allocation/accounting. Preliminary experiences with a prototype of this system in a workstation environment are reported. This has been implemented as the Equus QOS management platform currently running over Unix System V.4.

[1]  Dinesh C. Verma,et al.  A Scheme for Real-Time Channel Establishment in Wide-Area Networks , 1990, IEEE J. Sel. Areas Commun..

[2]  Ramesh Govindan,et al.  Support for continuous media in the DASH system , 1990, Proceedings.,10th International Conference on Distributed Computing Systems.

[3]  Andy Hopper,et al.  Handling audio and video streams in a distributed environment , 1993, SOSP '93.

[4]  Thierry Turletti,et al.  H.261 software Codec for videoconferencing over the internet , 1993 .

[5]  J. Duane Northcutt,et al.  SVR4UNIX Scheduler Unacceptable for Multimedia Applications , 1993, NOSSDAV.

[6]  David Wetherall,et al.  A software-oriented approach to the design of media processing environments , 1994, 1994 Proceedings of IEEE International Conference on Multimedia Computing and Systems.

[7]  Stefan Savage,et al.  Processor capacity reserves: operating system support for multimedia applications , 1994, 1994 Proceedings of IEEE International Conference on Multimedia Computing and Systems.

[8]  Deborah Estrin,et al.  An architectural comparison of ST-II and RSVP , 1994, Proceedings of INFOCOM '94 Conference on Computer Communications.