End-to-End
Available Bandwidth: Measurement Methodology, Dynamics, and Relation with TCP
Throughput. Manish Jain, Constantinos Dovrolis (Univerity of The available bandwidth (avail-bw)
in a network path is of major importance in congestion control, streaming
applications, QoS verification, server selection, and overlay networks. We describe
an end-to-end methodology, called Self-Loading Periodic Streams (SLoPS), for measuring avail-bw.
The basic idea in SLoPS is that the one-way delays
of a periodic packet stream show an increasing trend when the stream's rate is
higher than the avail-bw. We implemented SLoPS in a tool called pathload.
The accuracy of the tool has been evaluated with both simulations and
experiments over real-world Internet paths. Pathload
is non-intrusive, meaning that it does not cause significant increases in the
network utilization, delays, or losses. We used pathload
to evaluate the variability (`dynamics') of the avail-bw
in some paths that cross Papers are provided as
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