From owner-freebsd-stable@FreeBSD.ORG  Thu Jan  6 11:34:35 2011
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Sender: Bernhard Schmidt <bschmidt@techwires.net>
From: Bernhard Schmidt <bschmidt@freebsd.org>
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Date: Thu, 6 Jan 2011 12:34:39 +0100
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Cc: freebsd-stable@freebsd.org
Subject: Re: Regression with iwn drivers (4965BGN) in 8.2-PRERELEASE ?
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On Thursday, January 06, 2011 11:23:44 Olivier Cochard-Labb=E9 wrote:
> 2011/1/6 Bernhard Schmidt <bschmidt@freebsd.org>:
> > What do you mean with 'unusable' exactly? Lots of packet loss, or just
> > slow transfer rates? 'wlandebug +rate' might shed some light on this
> > one.
>=20
> Hi, it's just very slow transfer rates.
> I didn't know wlandebug, thanks for the tips.
> Here are the result just after a boot, during pinging my gateway (few
> traffic):
>=20
> Jan  6 11:02:25 d630 kernel: wlan0: [3a:41:c4:e3:1e:18] AMRR
> increasing rate 48 (txcnt=3D11 retrycnt=3D0)
> Jan  6 11:02:36 d630 kernel: wlan0: [3a:41:c4:e3:1e:18] AMRR
> increasing rate 72 (txcnt=3D11 retrycnt=3D0)
> Jan  6 11:03:02 d630 kernel: wlan0: [3a:41:c4:e3:1e:18] AMRR
> increasing rate 96 (txcnt=3D11 retrycnt=3D0)
>=20
> Now, I start xorg and a start a browser:
>=20
> Jan  6 11:04:04 d630 kernel: wlan0: [3a:41:c4:e3:1e:18] AMRR
> decreasing rate 72 (txcnt=3D11 retrycnt=3D10)
> [..]
> Jan  6 11:11:09 d630 kernel: wlan0: [3a:41:c4:e3:1e:18] AMRR
> decreasing rate 4 (txcnt=3D11 retrycnt=3D4)
>=20
> The rate decrease too much for using a browser (but I can still ping
> my gateway)=85

That looks indeed quite weird. I'll have a look into that.

Can you post 'ifconfig wlan0 list scan' output, just to see how staffed the=
=20
band is?

=2D-=20
Bernhard