Presentation
SRAP: Sender-Side Receiver-Aware Port Selection for High-Speed Multi-Flow TCP
DescriptionAchieving 400 Gbps requires aggregating multiple flows across cores rather than pushing single-flow limits. However, with 16×25 Gbps TCP flows, random ephemeral ports cause receiver-side packet steering (RSS) to concentrate flows on single CPU cores, degrading throughput from 25 Gbps to below 5 Gbps.
Unlike receiver-side solutions that suffer from cache misses and state migration overhead, SRAP transparently controls source ports at senders, ensuring collision-free mapping without runtime remapping costs or application modification.
With 16×25 Gbps flows, random assignment achieves optimal distribution with probability 1.04\%, causing throughput to vary from 44.8 to 395 Gbps, while our approach consistently delivers 23.3-25 Gbps per flow with guaranteed 1:1 flow-to-core mapping.
Unlike receiver-side solutions that suffer from cache misses and state migration overhead, SRAP transparently controls source ports at senders, ensuring collision-free mapping without runtime remapping costs or application modification.
With 16×25 Gbps flows, random assignment achieves optimal distribution with probability 1.04\%, causing throughput to vary from 44.8 to 395 Gbps, while our approach consistently delivers 23.3-25 Gbps per flow with guaranteed 1:1 flow-to-core mapping.
Event Type
Research and ACM SRC Posters
TimeTuesday, 18 November 20258:00am - 5:00pm CST
LocationSecond Floor Atrium
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