em driver input errors

[Barney Cordoba]

--- On Wed, 9/9/09, Mike Tancsa <mike at sentex.net> wrote:

> From: Mike Tancsa <mike at sentex.net>
> Subject: Re: em driver input errors
> To: "Barney Cordoba" <barney_cordoba at yahoo.com>
> Cc: freebsd-net at freebsd.org
> Date: Wednesday, September 9, 2009, 9:55 AM
> At 07:47 AM 9/9/2009, Barney Cordoba
> wrote:
> >    www.sentex.net/mike > > > >
> > > The 8241GI may not be able to handle full gigabit
> flows if > its only > wired at 32-bit 33Mhz, which is
> only capable of bursting to > 1Gb/s. With > a single
> NIC it likely just fine, but it a bridged or > firewall
> type > config you may just be seeing bus failures. >
> > Barney I meant 82541EI...Same answer.
> 
> 
> Both of the NICs on this motherboard are wired in.  I
> will see if there is a spare pcie slot and try a different
> em nic.  Its also a single nic. No bridge or forwarding
> as all the packets are destined to the machine itself.
> 
>         ---Mike
> 
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> --------------------------------------------------------------------
> Mike Tancsa,           
>                
>           tel +1 519 651 3400
> Sentex Communications,         
>                
>   mike at sentex.net
> Providing Internet since 1994       
>             www.sentex.net
> Cambridge, Ontario Canada         

A quick test would be to force it to 100Mb/s to see if the problem goes
away.  I see you are using em1 which implies another NIC...if you have
traffic on the other lan its not much different than

Also, realize that most pciX busses are shared. So your disk and other
devices may be sharing. Its really derilect for these MB manufacturers
to sell dual gig nic systems and them wire them to a slow bus. But its
what they do.

Barney