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Start-time fair queueing: a scheduling algorithm for integrated services packet switching networks

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3 Author(s)
Goyal, P. ; Dept. of Comput. Sci., Texas Univ., Austin, TX, USA ; Vin, H.M. ; Haichen Cheng

We present a start-time fair queueing (SFQ) algorithm that is computationally efficient and achieves fairness regardless of variation in a server capacity. We analyze its single server and end-to-end deadline guarantee for variable rate fluctuation constrained (FC) and exponentially bounded fluctuation (EBF) servers. To support heterogeneous services and multiple protocol families in integrated services networks, we present a hierarchical SFQ scheduler and derive its performance bounds. Our analysis demonstrates that SFQ is suitable for integrated services networks since it: (1) achieves low average as well as maximum delay for low-throughput applications (e.g., interactive audio, telnet, etc.); (2) provides fairness which is desirable for VBR video; (3) provides fairness, regardless of variation in server capacity, for throughput-intensive, flow-controlled data applications; (4) enables hierarchical link sharing which is desirable for managing heterogeneity; and (5) is computationally efficient

Published in:

Networking, IEEE/ACM Transactions on  (Volume:5 ,  Issue: 5 )