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A comment on Surpassing 10Gb/S over Tailscale. Parent comment

Re:Surpassing 10Gb/S over Tailscale by ignoramous on Thursday April 13, 2023 @06:17PM (#35562884)
My guess is UDP receive coalescing is UDP GRO (generic recv offload) + recvmmsg(2)
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Re:Surpassing 10Gb/S over Tailscale by raggi on Thursday April 13, 2023 @07:01PM (#35563337)
Yup, this is referring to GRO.

IIRC we use a contiguous 64kb buffer in the first scatter-gather slot and 128 messages per syscall in the current tuning.

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