Revisiting old friends: is CoDel really achieving what RED cannot?

@inproceedings{Kuhn2014RevisitingOF,
  title={Revisiting old friends: is CoDel really achieving what RED cannot?},
  author={Nicolas Kuhn and Emmanuel Lochin and Olivier Mehani},
  booktitle={CSWS@SIGCOMM},
  year={2014}
}
We use ns-2 simulations to compare RED's gentle_ mode to CoDel in terms of their ability to reduce the latency for various TCP variants. We use a common dumbbell topol- ogy with Pareto background traffic, and measure the packet delays and transmission time of a 10 MB FTP transfer. In our scenarios, we find that CoDel reduces the latency by 87%, but RED still manages to reduce it by 75%. However, the use of CoDel results in a transmission time 42% longer than when using RED. In light of its… CONTINUE READING
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