Re: [B.A.T.M.A.N.] High latency with batman-adv on ethernet

Sven Eckelmann
2016-10-21T15:11:08Z

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On Freitag, 21. Oktober 2016 16:43:41 CEST Sven Eckelmann wrote:
[...]
> > because i tested between ethernet network port ( i don't test in wifi
> > port ) , whether it will master reason ?
>
> Should not be the "reason". batman-adv doesn't care much about it. It just
> requires an ethernet compatible device. The re-broadcast is a little bit
> less aggressive on non-wifi devices but this has nothing to do with your
> problem.

Just created a small test setup via ethernet with batman-adv 2016.3 to show
you how the results are here. They were connected via a single cable:

without batman-adv
------------------

$ ping -c 10 192.168.2.196
PING 192.168.2.196 (192.168.2.196) 56(84) bytes of data.
64 bytes from 192.168.2.196: icmp_seq=1 ttl=64 time=0.478 ms
64 bytes from 192.168.2.196: icmp_seq=2 ttl=64 time=0.682 ms
64 bytes from 192.168.2.196: icmp_seq=3 ttl=64 time=0.392 ms
64 bytes from 192.168.2.196: icmp_seq=4 ttl=64 time=0.642 ms
64 bytes from 192.168.2.196: icmp_seq=5 ttl=64 time=0.574 ms
64 bytes from 192.168.2.196: icmp_seq=6 ttl=64 time=0.466 ms
64 bytes from 192.168.2.196: icmp_seq=7 ttl=64 time=0.602 ms
64 bytes from 192.168.2.196: icmp_seq=8 ttl=64 time=0.619 ms
64 bytes from 192.168.2.196: icmp_seq=9 ttl=64 time=0.658 ms
64 bytes from 192.168.2.196: icmp_seq=10 ttl=64 time=0.440 ms

--- 192.168.2.196 ping statistics ---
10 packets transmitted, 10 received, 0% packet loss, time 9000ms
rtt min/avg/max/mdev = 0.392/0.555/0.682/0.098 ms

with batman-adv
---------------

$ ping -c 10 10.10.130.66
PING 10.10.130.66 (10.10.130.66) 56(84) bytes of data.
64 bytes from 10.10.130.66: icmp_seq=1 ttl=64 time=0.489 ms
64 bytes from 10.10.130.66: icmp_seq=2 ttl=64 time=0.675 ms
64 bytes from 10.10.130.66: icmp_seq=3 ttl=64 time=0.552 ms
64 bytes from 10.10.130.66: icmp_seq=4 ttl=64 time=0.562 ms
64 bytes from 10.10.130.66: icmp_seq=5 ttl=64 time=0.612 ms
64 bytes from 10.10.130.66: icmp_seq=6 ttl=64 time=0.573 ms
64 bytes from 10.10.130.66: icmp_seq=7 ttl=64 time=0.534 ms
64 bytes from 10.10.130.66: icmp_seq=8 ttl=64 time=0.622 ms
64 bytes from 10.10.130.66: icmp_seq=9 ttl=64 time=0.454 ms
64 bytes from 10.10.130.66: icmp_seq=10 ttl=64 time=0.468 ms

--- 10.10.130.66 ping statistics ---
10 packets transmitted, 10 received, 0% packet loss, time 8996ms
rtt min/avg/max/mdev = 0.454/0.554/0.675/0.067 ms

Kind regards,
Sven

PS: I've changed the subject because it was extremely unspecific and
too long.

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