forwarding performance with releng7 vs 8 vs 9 vs 10 on an Alix box

[Kevin Oberman]

On Fri, Jan 17, 2014 at 11:54 AM, Mike Tancsa <mike at sentex.net> wrote:

> We have a couple of sites where we found it was possible to live lock /
> crash an alix box if there were too many pps flowing across the unit in
> RELENG_8.  The same device with releng_7 did not show the same
> behaviour.  As these boxes are remote and the watchdog would kick in, I
> was not able to debug things very much. Even back in the lab, it wasnt
> always easy to trigger the crash synthetically, but I could.
>
> Has anyone done any network performance comparisons between the various
> branches for speed and stability for single core embedded platforms like
> the ALIX or Soekris ?
>
>         ---Mike
>
FreeBSD 8 introduced default support for TSO. You might try turning it off
(-tso) if it is enabled on the interfaces involved.

-- 
R. Kevin Oberman, Network Engineer, Retired
E-mail: rkoberman at gmail.com