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

Paul paul at
Tue Jul 8 08:26:43 UTC 2008

Will someone confirm if it will support the 82571EB ?  I don't see a 
reason why not as it's very similar hardware
and it's available now in large quantities so making 82571 part of igb I 
think would be a good idea.

Kip Macy wrote:
>>> I have a pre-production card. With some bug fixes and some tuning of
>>> interrupt handling (custom stack - I've been asked to push the changes
>>> back in to CVS, I just don't have time right now) an otherwise
>>> unoptimized igb can forward 1.04Mpps from one port to another (1.04
>>> Mpps in  on igb0 and 1.04 Mpps out on igb1) using 3.5 cores on an 8
>>> core system.
>> Is this on 1gbps or on 10gbps NIC?
> Hi Stefan,
> The hardware that igb supports is just the latest revision of the
> hardware supported by em, i.e. it is 1gbps.
> Cheers,
> Kip
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