Efficient admission control for EDF schedulers

We present algorithms for flow admission control at an EDF link scheduler when the flows are characterized by peak rate, average rate and burst size. We show that the algorithms have very low computational complexity and are easily applicable in practice. The complexity can be further decreased by introducing the notion of flex classes. We evaluate the penalty in efficiency that the classes incur to the EDF scheduler. We find that this efficiency degradation can be made arbitrarily small and is acceptable even for a small number of classes.

[1]  Kumar Jayantilal Parekn Abhay,et al.  A generalized processor sharing approach to frow control in integrated services networks , 1992 .

[2]  Kang G. Shin,et al.  Real-time communication in multi-hop networks , 1991, [1991] Proceedings. 11th International Conference on Distributed Computing Systems.

[3]  Roch Guérin,et al.  Efficient network QoS provisioning based on per node traffic shaping , 1996, TNET.

[4]  Domenico Ferrari,et al.  Rate-Controlled Service Disciplines , 1994, J. High Speed Networks.

[5]  Chung Laung Liu,et al.  Scheduling Algorithms for Multiprogramming in a Hard-Real-Time Environment , 1989, JACM.

[6]  Abhay Parekh,et al.  Optimal multiplexing on a single link: delay and buffer requirements , 1994, Proceedings of INFOCOM '94 Conference on Computer Communications.

[7]  Scott Shenker,et al.  Specification of Guaranteed Quality of Service , 1997, RFC.

[8]  Paul T. Brady,et al.  A statistical analysis of on-off patterns in 16 conversations , 1968 .

[9]  Scott Shenker,et al.  Analysis and simulation of a fair queueing algorithm , 1989, SIGCOMM 1989.

[10]  Jörg Liebeherr,et al.  Design and Analysis of a High-Performance Packet Multiplexer for Multiservice Networks with Delay Guarantees , 1994 .

[11]  Atm Forum.  ATM user-network interface (UNI) specification : version 3.1 , 1993 .

[12]  Domenico Ferrari,et al.  Exact admission control for networks with a bounded delay service , 1996, TNET.

[13]  Edward W. Knightly,et al.  Fundamental limits and tradeoffs of providing deterministic guarantees to VBR video traffic , 1995, SIGMETRICS '95/PERFORMANCE '95.

[14]  Donald F. Towsley,et al.  Call admission and resource reservation for multicast sessions , 1996, Proceedings of IEEE INFOCOM '96. Conference on Computer Communications.

[15]  Kang G. Shin,et al.  On the ability of establishing real-time channels in point-to-point packet-switched networks , 1994, IEEE Trans. Commun..

[16]  Lixia Zhang,et al.  Resource ReSerVation Protocol (RSVP) - Version 1 Functional Specification , 1997, RFC.

[17]  K ParekhAbhay,et al.  A generalized processor sharing approach to flow control in integrated services networks , 1993 .