[Soekris] Net 4801 performance

[Ryan Langseth]

On Tue, 2006-09-05 at 08:05 -0500, farlies wrote:
> schule wrote:
> > When I up, or download a file (~60MB iso) per ftp, I get only
> > ~850 kb/sec throughput.
> > I tried OpenBSD as well, and I get about 870kb/sec.
> > 
> > That seems a bit to little to me.
> > 
> > On the monowall website they speak of about 50mb/sec(with FeeBSD 4.11),
> > so I expected a little more.
> > 
> > How much throughput do you get with your net4801?
> 
> I've been using "iperf" (http://sourceforge.net/projects/iperf)
> to test my 4801 on an unloaded 100BT LAN and have also been a
> bit surprised by lower throughput than expected.  The best I
> have been able to get out of OpenBSD 3.9 is ~21 MBit; this is
> with pf disabled, and window size 256k. Throughput between
> a pair of Linux/Dell desktops over the same wiring is ~93 Mbit.
> 
> This test may be probing a different boundary that Schule's,
> but I would be interested if anyone has wrung more performance
> out of the 4801 interfaces (National DP83816)?
> 
Does anyone have a method for testing more than just throughput? I am
currently running into issues with packet loss across some of our
wireless APs.  I suspect it is a combination of number of connections
and bandwidth. But I would like to do some real world testing in a clean
enviroment, before blindly adding more hardware and causing (potentially
more) interference.  Basically I would like to "replay" real traffic
across our test network to see if I can duplicate the problem, But I am
not sure what tools are available to test our equipment this way, any
suggestions?

Ryan Langseth
ryanl at invisimax.com