Freebsd IP Forwarding performance (question, and some info) [7-stable, current, em, smp]

Kip Macy kip.macy at
Sun Jul 20 01:11:24 UTC 2008

On Fri, Jul 11, 2008 at 11:44 PM, Brian McGinty <brian.mcginty at> wrote:
>> Hi Brian
>> I very much doubt that this is ceteris paribus. This is 384 random IPs
>>  -> 384 random IP addresses with a flow lookup for each packet. Also,
>> I've read through igb on Linux - it has a lot of optimizations that
>> the FreeBSD driver lacks and I have yet to implement.
> Hey Kip,
> when will you push the optimization into FreeBSD?

Hi Brian,

I'm hoping to get to it some time in August. I'm a bit behind in my
contracts at the moment.

FYI: I'm actually able to forward 2.3Mpps between 2 10Gig interfaces
on an 8-core system. I'm hoping to push it up to 3Mpps.


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