  TCPTuner is a TCP (transmission control protocol) congestion control kernel
module and GUI (graphical user interface) for Linux that allows real-time
modification of the congestion control parameters of TCP CUBIC, the current
default algorithm in Linux. Specifically, the tool provides access to alpha,
the rate at which a sender's congestion window grows; beta, the multiplicative
factor to decrease the congestion window on a loss event; as well as CUBIC's
fast convergence and tcp friendliness parameters. Additionally, the interface
provides access to ip-route parameters for the minimum retransmission time and
initial congestion window size. In this paper, we describe the implementation
of TCPTuner and show experimental data of the effects of adjusting congestion
control parameters.
