Switching White Papers
Efficient Queue Management for TCP Flows
Overview Packets in the Internet can experience large queueing delays during busy periods. Backbone routers are generally engineered to have large buffers, in which packets may wait as long as half a second (assuming FIFO service, longer otherwise). During congestion periods, these buffers may stay close to full, subjecting packets to long delays, even when the intrinsic latency of the path is relatively small. This paper studies the performance improvements that can be obtained by using more sophisticated packet schedulers, than are typical of Internet routers. The results show that the large buffers found in WAN routers contribute only marginally to improving router throughput, and the higher delays that come with large buffers makes them a dubious investment.
| Publisher | Washington University in St. Louis | File Format | |
|---|---|---|---|
| Date Published | August 2002 | ||
| Format | White Papers | ||
| Topics | |||
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