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From: Marek Lindner <mareklindner@neomailbox.ch>
Date: Fri, 31 Aug 2018 20:16:31 +0800
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Subject: Re: [B.A.T.M.A.N.] Recent test result. Re:Re: Paper "Performance
 Evaluation of BATMAN-adv Wireless Mesh Network Routing Algorithms "
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Cc: Sven Eckelmann <sven@narfation.org>, Ligang LIU <heishuihe2008@163.com>, a@unstable.cc

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On Friday, 31 August 2018 18:30:00 HKT Sven Eckelmann wrote:
> > I noticed 2 macro definitons.
> > #define BATADV_ELP_PROBES_PER_NODE 2
> > #define BATADV_ELP_MIN_PROBE_SIZE 200 /* bytes */
> > I wonder why it sends 2 prob ELP packets to each neighbour.
> > Can I change the value of BATADV_ELP_PROBES_PER_NODE from 2 to 1?
> > And can I decrease ELP prob packet size from 200 to 100, in order to
> > decrase the ELP airtime?
> @Antonio, @Marek: Maybe you can explain it better than me.
> 
> I would guess that Antonio wanted to make sure that the rate control
> algorithm of the driver probes enough and thus provides a more realistic
> expected throughput.

Feel free to change these values to test if this has any impact. As far as I 
am aware, these number are the result of an educated guess based on how 
minstrel works. Antonio can shed more light on this.


> And you can just use elp_interval [2] to reduce the number of times
> broadcast and unicast ELP frames are transmitted. 

I don't think unicast ELP were supposed to be affected by changing the 
elp_interval. Smells like a bug to me. Antonio ?

Cheers,
Marek



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