forwarding/ipfw/pf evolution (in pps) on -current

[Olivier Cochard-Labbé]

On Thu, Apr 25, 2013 at 11:28 AM, Andre Oppermann <andre at freebsd.org> wrote:
>
>
> Again one has to be really careful drawing any firm conclusions from this
> as it was measured on a Pentium4 and UP kernel (GENERIC would add WITNESS
> and INVARIANT overhead as well).
>
> The Pentium4 is about the worst micro-architecture when it comes to locks
> and easily regresses.  At the same time modern Intel Core i[3-7] and AMD64
> may actually improve with these changes.  Unless more recent micro-archs
> have been shown to exhibit the same regression we can't claim this change
> was bad (other than for Pentium4).

OK, here are the results of the same bench on another server (HP
ProLiant DL320 G5):
- Dual Core: Intel Xeon CPU 3050 2.13GHz (2133.45-MHz K8-class CPU)
- NIC changed to dual 82571EB

Graph:
http://gugus69.free.fr/freebsd/benchs/current2/current-pps.png

gnuplot data:
http://gugus69.free.fr/freebsd/benchs/current2/plot/

ministat data:
http://gugus69.free.fr/freebsd/benchs/current2/ministat/

raw data:
http://gugus69.free.fr/freebsd/benchs/current2/raw/

Notice the Glebius' explanation regarding a unique one-flow test and
the new pf-smp behavior:
http://lists.freebsd.org/pipermail/freebsd-net/2013-April/035417.html

Regards,

Olivier