2023
DOI: 10.1109/tpds.2023.3259799
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Congestion Control for Datacenter Networks: A Control-Theoretic Approach

Abstract: In this paper, we present RoCC, a robust congestion control approach for datacenter networks based on RDMA. RoCC leverages switch queue size as an input to a PI controller, which computes the fair data rate of flows in the queue. The PI parameters are self-tuning to guarantee stability, rapid convergence, and fair and near-optimal throughput in a wide range of congestion scenarios. Our simulation and DPDK implementation results show that RoCC can achieve up to 7× reduction in PFC frames generated under high lo… Show more

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Cited by 3 publications
(1 citation statement)
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“…Due to the coexistence of long-lived traffic with variety data center types and traffic patterns for cloud computing the network is compelled to prioritize overflow queues and reduce congestion [28]. Consequently, when short-lived traffic uses the same link as long-lived traffic its performance suffers dramatically.…”
Section: Figure 7 Long-lasting Traffic Causes Queue Buildingmentioning
confidence: 99%
“…Due to the coexistence of long-lived traffic with variety data center types and traffic patterns for cloud computing the network is compelled to prioritize overflow queues and reduce congestion [28]. Consequently, when short-lived traffic uses the same link as long-lived traffic its performance suffers dramatically.…”
Section: Figure 7 Long-lasting Traffic Causes Queue Buildingmentioning
confidence: 99%