[OpenIndiana-discuss] How to test ethernet throughput?

[Robbie Crash]

Gaming iperf you can get close to theoretical maximums on wire connections,
but if you're just on a 10/100 network looks liek you've got everything
working properly.  Real world performance (for me) sits at around 400Mb/sec
for medium (4-100MB) files, 600Mb/sec for large (100MB+) files. Files under
4MB are effectively instantaneous.

#default
$ ./iperf -c thoth
------------------------------------------------------------
Client connecting to thoth, TCP port 5001
TCP window size: 8.00 KByte (default)
------------------------------------------------------------
[396] local 192.168.2.8 port 55100 connected with 192.168.2.24 port 5001
[ ID] Interval       Transfer     Bandwidth
[396]  0.0-10.0 sec   265 MBytes   222 Mbits/sec

#Forcing settings
$ ./iperf -N -w 9M -c thoth
------------------------------------------------------------
Client connecting to thoth, TCP port 5001
TCP window size: 9.00 MByte
------------------------------------------------------------
[388] local 192.168.2.8 port 55313 connected with 192.168.2.24 port 5001
[ ID] Interval       Transfer     Bandwidth
[388]  0.0-10.1 sec  1.05 GBytes   896 Mbits/sec




On Mon, May 21, 2012 at 10:18 AM, Gary Mills <gary_mills at fastmail.fm> wrote:

> On Fri, May 18, 2012 at 08:38:09AM -0500, Gary Mills wrote:
> > I'm just finishing a driver for the Atheros AR8131 and AR8132 ethernet
> > devices.  I'm ready now to test it under load.  What's available in
> > OpenIndiana for this purpose?  I couldn't see anything in the
> > repository that seemed suitable.  I don't need to bring the interface
> > up to maximum throughput, but I'd at least like to be sure that
> > nothing breaks when it has a reasonable load.
>
> Thanks to all who responded.  Most of you recommended `iperf'.  That's
> what I used.  Not being a network expert, I didn't know what options
> to use, but with the defaults I was able to push many packets through
> this interface in both directions.  The driver worked nicely.  I got a
> bandwith of about 94 Mbits/sec, three times that of the wireless
> interface.  That's all I needed.
>
> --
> -Gary Mills-            -refurb-                -Winnipeg, Manitoba,
> Canada-
>
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> OpenIndiana-discuss at openindiana.org
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>



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