[Olsr-users] Scalability of Networks using Olsr_Switch

[Markus Kittenberger]

use a newer olsrd version (e.g. 0.6.1 is a current one),.
all 0.5.x wasn't very stable, maybe except the latest 0.5.6-Rx

(but hmm, i'm not 100% sure if the hemu code is still in 0.6.x)

but even 0.5.4 "might" scale to thousands,.. (depending on your cpu and ram
limits) they where definitely used (somewhat reliable) in meshes of several
hundred nodes,..

but they are buggy, an will segfault from time to time,..

Markus

p.s what is your goal intention?

On Thu, Dec 16, 2010 at 1:22 AM, Lo, Caleb K. <(spam-protected)> wrote:

> Hi everybody,
>
>                 I’m running olsrd-0.5.4, and I’m trying to simulate a large
> network using the olsr_switch application.  I’ve tried to set up a large
> network in host-emulation mode using the instructions in the “Running olsrd
> in host-emulation mode” section of:
> http://www.olsr.org/docs/README-Olsr-Switch.html
>
> The command that I used was ”./olsrd -d 1 –hemu 10.0.0.x”, where x ranges
> from 1 to 17 (inclusive).  I’m using the olsrd.conf file that was provided
> in the tarball from the olsrd website, except that I disabled hysteresis
> based on the following run-time error that I observed: “Hysteresis and
> LinkQuality cannot both be active!  Deactivate one of them.  Bad
> configuration!”
>
> Using GNU Screen, I started olsr_switch in one window, and then I started
> (sequentially) olsrd in 17 new windows.  When I started the 17th olsrd
> process, I observed the following error on the other processes: “Could not
> read whole packet (size 51592, read 31848).  Segmentation fault”, and they
> all crashed.
>
> Is this a fundamental limitation (in terms of scalability) of olsr_switch,
> or is this a bug that could be fixed by changing some appropriate constants
> in the olsr_switch and/or olsr directories?
>
> Thank you very much.
>
>
>
> Caleb Lo
>
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