On 08Jan16, Bruce Evans allegedly wrote:
> If the NIC can't reach line rate

> Network stack overheads are also enormous.

Bruce makes some excellent points.

I challenge anyone to get line rate UDP out of FBSD (or Linux) for a
1G NIC yet alone a 10G NIC listening to a single port. It was exactly
my frustration with UDP performance that led me down the path of
*mmsg() and netmap.

Frankly this is an opportunity for FBSD as UDP performance appears to
be a neglected area.


Mark.
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