[Testing] [olpc-nz] diagnosing ad-hoc network activity sharing problems
quozl at laptop.org
Tue Jan 25 21:04:32 EST 2011
On Tue, Jan 25, 2011 at 08:38:01PM -0500, Martin Langhoff wrote:
> With 10.1.3, we've found it to be reasonably reliable in groups of
I guess a limiting factor will be the NetworkManager scan spread
randomly across ten laptops. During a scan packets are dropped, for
about 3s. I also wonder if the ad-hoc master will shift to another
laptop. You might be able to achieve more if scans were turned off.
> What was the size of the group?
> Any sources of interference?
Tabitha, that reminds me, a limited but not entirely useless measure of
the interference heard by a laptop can be obtained using iwconfig during
a ping. Look at "Signal level" and "Noise level".
Here I have a noise level of -94 dBm, and with laptops side by side a
signal level of -6 dBm and -13 dBm.
Also have a look at my Signal Strength Meter, a python script that can
be run from Terminal to rapidly display these values.
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