does freebsd support so called Scalable I/O on intel NIC ?

[Ivan Voras]

Bartosz Giza wrote:
> Hi,
> 
> i am looking for a good NIC from NIC to put on our quite busy router based 
> on freebsd 6.3 (soon 7.x)
> I've found server NIC from intel and there is such a thing like scalable I/O 
> on windows and linux.
> (from web page)
> 
> "load balancing on multiple CPUs Increases
> performance on multi-processor systems by efficiently
> balancing network loads across CPU cores when used
> with Receive-Side Scaling from Microsoft or Scalable
>  I/O on Linux*"
> 
> Is such thing supported on freebsd ?

I don't think so - I've run into problems when IO handling is limited to
a single CPU. There are apparently unofficial patches for this here:
http://people.yandex-team.ru/~wawa/ but I haven't tried them yet.

Other components of "scalable IO" are present - interrupt moderation, TSO.

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