Re: PolyMix-3 Dummynet & netperf throughput question

From: Alex Rousskov (rousskov@measurement-factory.com)
Date: Mon Mar 19 2001 - 16:22:09 MST


Terry,

        Your setup is functioning correctly. Please see the "Netperf
throughput vale only has 1.6Mb/sec" thread in the mailing list
archives. Specifically,
 http://polygraph.ircache.net/cgi-bin/mail2html.cgi?fnames=20010201/1061

Alex.

On Mon, 19 Mar 2001, Sych, Terry wrote:

>
> I'm following the steps described in "How To Run PolyMix-3".
>
> In step 3.5, I configured Dummynet per the directions, adding 40
> ms of delay for the server. I do see the round-trip time of
> 80 ms. for ping.
>
> In step 4.3, it says to run netperf between the clients
> and servers to test your network. netperf is showing only ~1.5
> Mbits/sec. for all IP addresses configured with this 40 ms. of
> delay.
>
> Is this correct? The documentation says to expect
> 90-95 Mb/s for unidirectional, ~80 Mb/s for duplex.
> Should I get this throughput even with the 40 ms. of delay?
>
> I do get ~80 Mb/s duplex and ~95 Mb/s unidirectional
> when I access the servers through a different IP address
> (i.e. 192.168.1.2) that has no Dummynet delay.
>
> Thanks,
> Terry Sych
>
>
>
>
>



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