[Battlemesh] any (intermediary) results

[Axel Neumann]

On Sonntag 20 März 2011, Benjamin Henrion wrote:
> On Sun, Mar 20, 2011 at 7:02 PM, L. Aaron Kaplan <aaron at lo-res.org> wrote:
> > Hi!
> > 
> > Back home again (unfortunately). How is the situation at the WBMv4? Did
> > you manage to run any tests?
> 
> Axel made some tests early this morning, with big pings, but we had to
> remove some nodes due to the raising moisture of the morning. The
> power supply we installed at the italian was also removed to close the
> door around 6am.
> 
> No other TCP nor UDP transfers were made AFAIK.
> 
> Maybe Axel can say more...

We did further tests. 
Where is the recommended place to upload the approximately 50MB of data ?

More detailed:

In the afternoon, Boris and Henning redeploy the nodes that were collected the 
previous night because of potential rain. They also put back the 3-channel-
switched fonera boards back to their old position. In the end we had 34 active 
nodes in the mesh.

Another problem were the remaining nodes that still had the fixed 54MBit rate 
option set.
IMHO this option only affects unicast transmissions and causes them to 
essentially behaved like a black hole!
Because of this option, all our previous tests (pings and others unicast 
measurements) were transmitted at 54MBit resulting in a much higher packet 
loss than detected by our routing protocols (which are sending  LinkQuality 
probes based on broadcast/multicast and transmitted with 1 or 5MBit at most.

After reenabling the auto rate-selection, the measurements became much more 
plausible. Also we were finally able to ping ALL 34 nodes in the mesh (some via 
up to 5 hops and a round-trip packet loss of 80 %). 

After that, Henning and me used a script to collect CPU, memory, protocol 
overhead data and ping success rates to various destination nodes (one 
destination node per measurement). We made a bunch of measurements, including 
mobile scenarios. Some of the data could need some further post processing to 
be better understandable but we already have some nice graphs and numbers.

Pau also wrote an interesting script measuring and visualizing latency and 
ping success rates to ALL nodes and using ALL protcols (static-rotuing, 
batman, babel, olsr, batman-adv, bmx6). 

Monday morning at 8 o clock we went to bed, leavin Paus' script running until  
the first people woke up and started to clean up everything.


/axel

> 
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