Presenter: Enhuan Dong
Authors: Yu Cao, Mingwei Xu, Xiaoming Fu,
Enhuan Dong
There are mainly two types of application
demands for high performance communications in DCNs. They have conflicting
requirements on link buffer occupancy. Although there are two related prior work,
they can be improved. LIA does not take into account the tradeoff between
throughput and latency. DCTCP can not fully utilize the paths in DCNs.
In order to balance throughput with latency
in DCNs, authors developed XMP as a congestion control scheme of MPTCP. They
propose the Buffer Occupancy Suppression (BOS) algorithm, which employs the ECN
mechanism to control link buffer occupancy. Next, they find the utility
function of BOS and then “multi-path-lize” it in the context of MPTCP. Finally,
they construct the Traffic Shifting (TraSh) algorithm to couple subflows so as
to move the traffic of an MPTCP flow from its more congested paths to less
congested ones.
They have done experiments using personal
computers. These experiments show that XMP can guarantee the fairness and shift
traffic. Additionally, the simulations also show the good performance of XMP.
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