kern/78791: [xl] xl(4) input errors and speed problem

[Daniel Dias Gonçalves]

Sten Daniel Soersdal escreveu:
> Gleb Smirnoff wrote:
>> On Thu, Aug 02, 2007 at 02:21:39PM -0300, Daniel Dias Gon?alves wrote:
>> D> > State-Changed-From-To: open->feedback
>> D> > State-Changed-By: glebius
>> D> > State-Changed-When: Tue Dec 27 09:03:50 UTC 2005
>> D> > State-Changed-Why: Please provide the following information. Is 
>> this one D> > particular card
>> D> > that experiences errors, or you have tested several 3Com cards 
>> and all
>> D> > fail?
>> D> >
>> D>  I have same problem, and is not only with card 3com (xl), also 
>> with Intel D>  card (fxp).
>> D>  In my servers running FreeBSD 6.1, have constant traffic of 
>> +-80mbps and D>  "input errors" (netstat - ni) always increases, use 
>> crossover cables and the D>  interfaces fixed "100baseTX-FDX".
>> D>  Frequently with Intel card (fxp), i have that to make ifconfig 
>> DOWN/UP in D>  the interface to come back to work.
>> D> D>  Which the solution for these problems ?
>>
>> I think the problem, you've described isn't the same problem as in 
>> kern/78791.
>>
>
> I haven't used this card in a long time and i don't know if TX/RX 
> checksum offloading is supported in the FreeBSD driver. Just to sum up 
> my findings.
>
> Checksum offloading is bugged, even on windows drivers. Disabling 
> checksum offloading has always resulted in much better performance.
>
> Also, when you say using "100baseTX-FDX" you mean between the servers 
> and not via a switch, right?
>
Yes, not via a switch.
--
Daniel D. G.