[Soekris] Net 4801 performance

[William Estrada]

Ryan,

  Some help for your testing:

    1) For a realtime performance analyzer: http://64.124.13.3/pfss/
    2) Don't use your target PC to run the analyzer.
    3) Use scp to create a load by transferring a large file, like an ISO.

  Here is a quick setup: http://64.124.13.3/projects/pfss/quicky/pfss_quicky.tar.gz

  I know, it needs more documentation.  In short, pfssh gathers stats and pfssg plots
the stats using gnuplot.  So: 'ssh xx.xx.xx.xx -l root pfssh | pfssg' should work
for you.  You can also use a linksys router to monitor the network traffic.

  Hope this helps?

-- 
William Estrada

Email      : MrUmunhum at popdial dot com
Resume     : www.Mt-Umunhum-Wireless.net/resume/william_estrada.html
HTTP       : www.Mt-Umunhum-Wireless.net

> Message: 6 Date: Tue, 05 Sep 2006 15:53:41 -0500 From: Ryan Langseth <ryanl at invisimax.com> 

Subject: Re: [Soekris] Net 4801 performance To: Soekris-tech at lists.soekris.com Message-ID: <1157489621.3995.8.camel at Baldur.invisimax.net> Content-Type: text/plain 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
> 
> 
>