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Date: Fri, 9 Sep 2011 16:02:46 +0800
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From: Adrian Chadd <adrian@freebsd.org>
To: Lev Serebryakov <lev@serebryakov.spb.ru>
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Cc: freebsd-wireless@freebsd.org
Subject: Re: AP performance (again): txpower regulation
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2011/9/9 Lev Serebryakov <lev@serebryakov.spb.ru>:
> Hello, Adrian.
> You wrote 9 =D3=C5=CE=D4=D1=C2=D2=D1 2011 =C7., 3:39:23:
>
>> Do you have two antennas connected, or just one?
> =9AOnly one, as second port is marked as "5ghz" and I don't use it. But
> =9AI have second pigtail and antenna, I'll connect it today and repeat
> =9Aexperiments.

Try forcing the TX/RX antenna then. Look at the output of athstats -
see how rx antenna isn't balanced?
I bet half your problem is that half your packets are going in/out of
a disconnected antenna.

Antenna profile:
[1] tx  8543738 rx  4922481
[2] tx   544837 rx    14216

See? :)

Try sysctl dev.ath.0.diversity=3D0
sysctl dev.ath.0.txantenna=3D1
sysctl dev.ath.0.rxantenna=3D1

See if that improves things. If not, try antennas =3D 2.


Adrian