[Server-devel] Missing XOs in neighbourhood view using XS

[Martin Langhoff]

On Tue, Jul 22, 2008 at 10:37 AM, David Leeming
<leeming at pipolfastaem.gov.sb> wrote:
> Trying out the school server for the first time at a training session in a
> Solomon Islands deployment. With 23 trainee teachers, using G1G1 XO-1
> laptops with build 703 (update 1). All registered successfully and all able
> to connect to and access the server.

Are you using an active antenna (AA) or an access point (AP) there?
Ah, I see below it is an AA. If you have an AP, can I suggest you try
that?

> It seemed to be working 100% but then we started noticing that it was not
> unusual to  be missing some XOs on the neighbourhood view. This was apparent
> with an exercise where people in groups of 4-5 tried to locate each other
> and make friends, in order to manage sharing in smaller groups. Almost all
> of the groups could not locate all of the other members of their group.

It would be interesting to hear what the "missing" laptops were
reporting from the olpc-netstatus command.

> So (a) should I expect all the other laptops to be visible? And (b) what is
> the maximum number of XOs per server?

With AAs and laptops in a dense setup (meaning close together) we are
seeing some trouble somewhere in the 10-20 machines range
unfortunately.On the other hand, if the machines that appeared to be
missing still could access the internet, then something else is afoot.

Of course, this is stuff we are working on.



m
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 martin at laptop.org -- School Server Architect
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