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Date: Fri, 7 Jun 2013 15:57:13 +0200
From: Antonio Quartulli <ordex@autistici.org>
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Subject: Re: [B.A.T.M.A.N.] batctl bw performance
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Hi Gabriel,

thank you for your logs

On Fri, Jun 07, 2013 at 10:49:10AM -0300, Gabriel Tol=C3=B3n wrote:
> >
> > Hello Gabriel,
> > there is a lot of noise because you are also generating traffic on the =
network.
> > However I can see the ICMP Echo Request and then an Echo Reply, therefo=
re the
> > two nodes seem to be exchanging ICMP packets correctly.
> >
> > I'm checking again to try to understand what went wrong.
> >
> > Meanwhile, can you please report the output of
> > "batctl l"
> > during a bw test after having set the bw_meter log level by running
> > "batctl ll bwm" ?
> >
> > To get the exact log of one test, you can first run batctl l (this will=
 print
> > all the past log), then you run the test and then you run batctl l agai=
n to
> > obtain the interesting log. Please upload it on pastebin too.
> >
> > Thanks a lot!
> >
>=20
> Sure, here they are:
>=20
> http://pastebin.com/fLu9hsyt
>=20


=46rom this log I can see that the protocol is entering Fast Retransmit man=
y times
and this happens due to reordering or small losses (the latter option is mo=
re
realistic on a single hop network - but is it really one hop? I never asked=
).

The other strange thing I see is the final SRTT value which is 260ms and lo=
oks
pretty high. Is there anything else going on the network (other traffic or.=
=2E)?


Cheers,



--=20
Antonio Quartulli

=2E.each of us alone is worth nothing..
Ernesto "Che" Guevara

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