Observations on Round-Trip Times of TCPConnections

摘要

Knowledge about properties of network trafficrncan be beneficial when studying network protocols. Itrnenables realistic models of network traffic to be createdrnand evaluations of current protocols to take place. Thisrnstudy examines trends in round-trip times (RTTs) at arnuniversity Web server. Round-trip time is a particularlyrnimportant characteristic of transport layer Internet trafficrnto measure because it impacts the throughput of TCP. Inrnaddition to examining trends of RTTs, this paper examinesrnthe relationship between RTT and the time between thernSYNACK and ACK packets. The relationship between thisrnheuristic for estimating RTT and actual measured RTTsrnis relevant for protocols such as TCP Vegas that need tornestimate RTT early in a connection.