DCQCN
The congestion-control algorithm tuning RoCE flows using ECN and PFC; mis-tuned it causes victim flows and stalls.
Current numbers
80–90%of the IB throughput gap that careful DCQCN tuning closes on RoCEv2; untuned leaves the rest on the table
The congestion-control algorithm tuning RoCE flows using ECN and PFC; mis-tuned it causes victim flows and stalls.