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SIGCOMM
2012
ACM

DeTail: reducing the flow completion time tail in datacenter networks

7 years 10 months ago
DeTail: reducing the flow completion time tail in datacenter networks
Web applications have now become so sophisticated that rendering a typical page may require hundreds of intra-datacenter flows. At the same time, web sites must meet strict page creation deadlines of 200-300ms to satisfy user demands for interactivity. Long-tailed flow completion times make it challenging for web sites to meet these constraints. They are forced to choose between rendering a subset of the complex page, or delay its rendering, thus missing deadlines and sacrificing either quality or responsiveness. Either option leads to potential financial loss. In this paper, we present a new cross-layer network stack aimed at reducing the long tail of flow completion times. The approach exploits cross-layer information to reduce packet drops, prioritize latency-sensitive flows, and evenly distribute network load, effectively reducing the long tail of flow completion times. We evaluate our approach through NS-3 based simulation and Click-based implementation demonstrating our a...
David Zats, Tathagata Das, Prashanth Mohan, Dhruba
Added 27 Sep 2012
Updated 27 Sep 2012
Type Journal
Year 2012
Where SIGCOMM
Authors David Zats, Tathagata Das, Prashanth Mohan, Dhruba Borthakur, Randy H. Katz
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