Network throughput: Never get more than 112MB/s über two NICs

[Dan Nelson]

In the last episode (Apr 12), Denny Schierz said:
> Am Montag, den 11.04.2011, 21:52 +0200 schrieb Denny Schierz:
> > Am 11.04.2011 um 20:06 schrieb Tim Daneliuk:
> > > Are you certain you are not somehow running active-passive instead of
> > > active-active ...  just a thought...
> > 
> > 150% sure. I used two dedicated NICs WITHOUT any loadbalancing. The sum
> > has to be more than 112MB/s.
> 
> it must me the network. I tested two crossover connections and I've got
> 220MB/s :-)

Check to see whether your switch ports are oversubscribed (common for older
blade switches, or very high-density blades); sometimes there will be
rectangles enclosing groups of 6-8 ports, which means that they are
controlled by a single chip internally.  Moving each of your test machines
to a separate group may improve your performance.

-- 
	Dan Nelson
	dnelson at allantgroup.com