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

[Stefan Lambrev]

Hi,

Kip Macy wrote:
> On Mon, Jul 7, 2008 at 6:07 PM, Mike Tancsa <mike at sentex.net> wrote:
>   
>> At 02:44 PM 7/7/2008, Paul wrote:
>>
>>     
>>> Also my 82571 NIC supports multiple received queues and multiple transmit
>>> queues so why hasn't
>>> anyone written the driver to support this?  It's not a 10gb card and it
>>> still supports it and it's widely
>>> available and not too expensive either.   The new 82575/6 chips support
>>> even more queues and the
>>> two port version will be out this month and the 4 port in october (PCI-E
>>> cards).  Motherboards are
>>> already shipping with the 82576..   (82571 supports 2x/2x  575/6 support
>>> 4x/4x)
>>>       
>>
>>
>> Actually, do any of your NICs attach via the igb driver ?
>>
>>     
>
> 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?
> -Kip
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>   

-- 

Best Wishes,
Stefan Lambrev
ICQ# 24134177