Latency analysis of TCP on an ATM network
Alec Wolman, Geoff Voelker, Chandramohan A. Thekkath · 1994
In this paper, we characterize the latency of TCP on an ATM network. Latency reduction is a difficult task, and careful analysis is the first step towards reduction. We investigate the impact of both the network controller and the protocol implementation on latency. We find that a low latency network controller has a significant impact on the overall latency even for a reliable transport protocol such as TCP, and that replacing the ULTRIX TCP implementation with the BSD 4.4 alpha implementation improves the latency up to 20%. We also characterize the impact on latency of some widely discussed improvements to TCP, such as header prediction and combining the checksum calculation with data copying. Latency Analysis of TCP on an ATM Network Alec Wolman, Geoff Voelker, and Chandramohan A. Thekkath Department of Computer Science and Engineering University of Washington Seattle, WA 98195 Abstract In this paper, we characterize the latency of TCP on an ATM network. Latency reduct...