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Date:      Thu, 6 Jan 2011 11:23:44 +0100
From:      =?ISO-8859-1?Q?Olivier_Cochard=2DLabb=E9?= <olivier@cochard.me>
To:        bschmidt@freebsd.org
Cc:        freebsd-stable@freebsd.org
Subject:   Re: Regression with iwn drivers (4965BGN) in 8.2-PRERELEASE ?
Message-ID:  <AANLkTimE59XsQMTUciBhbw2k84PT7wEFy8JQdYY4qTy8@mail.gmail.com>
In-Reply-To: <201101061046.02128.bschmidt@freebsd.org>
References:  <AANLkTinoZZiHqnvUy88RKJ7Y0h9Z6R%2BioHWuSB%2BNkfR6@mail.gmail.com> <201101061046.02128.bschmidt@freebsd.org>

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2011/1/6 Bernhard Schmidt <bschmidt@freebsd.org>:
>
> What do you mean with 'unusable' exactly? Lots of packet loss, or just sl=
ow
> transfer rates? 'wlandebug +rate' might shed some light on this one.

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 traff=
ic):

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)

Now, I start xorg and a start a browser:

Jan  6 11:04:04 d630 kernel: wlan0: [3a:41:c4:e3:1e:18] AMRR
decreasing rate 72 (txcnt=3D11 retrycnt=3D10)
Jan  6 11:04:09 d630 kernel: wlan0: [3a:41:c4:e3:1e:18] AMRR
decreasing rate 48 (txcnt=3D13 retrycnt=3D7)
Jan  6 11:04:10 d630 kernel: wlan0: [3a:41:c4:e3:1e:18] AMRR
decreasing rate 36 (txcnt=3D43 retrycnt=3D24)
Jan  6 11:04:11 d630 kernel: wlan0: [3a:41:c4:e3:1e:18] AMRR
decreasing rate 24 (txcnt=3D84 retrycnt=3D38)
Jan  6 11:04:12 d630 kernel: wlan0: [3a:41:c4:e3:1e:18] AMRR
decreasing rate 22 (txcnt=3D25 retrycnt=3D9)
Jan  6 11:04:12 d630 kernel: wlan0: [3a:41:c4:e3:1e:18] AMRR
decreasing rate 18 (txcnt=3D31 retrycnt=3D11)
Jan  6 11:04:13 d630 kernel: wlan0: [3a:41:c4:e3:1e:18] AMRR
decreasing rate 12 (txcnt=3D29 retrycnt=3D11)
Jan  6 11:04:13 d630 kernel: wlan0: [3a:41:c4:e3:1e:18] AMRR
decreasing rate 11 (txcnt=3D53 retrycnt=3D28)
Jan  6 11:04:18 d630 kernel: wlan0: [3a:41:c4:e3:1e:18] AMRR
decreasing rate 4 (txcnt=3D17 retrycnt=3D7)
Jan  6 11:04:20 d630 kernel: wlan0: [3a:41:c4:e3:1e:18] AMRR
decreasing rate 2 (txcnt=3D11 retrycnt=3D10)
Jan  6 11:06:07 d630 wpa_supplicant[413]: CTRL-EVENT-SCAN-RESULTS
Jan  6 11:09:48 d630 kernel: wlan0: [3a:41:c4:e3:1e:18] AMRR
increasing rate 4 (txcnt=3D11 retrycnt=3D0)
Jan  6 11:09:57 d630 kernel: wlan0: [3a:41:c4:e3:1e:18] AMRR
increasing rate 11 (txcnt=3D11 retrycnt=3D0)
Jan  6 11:10:30 d630 kernel: wlan0: [3a:41:c4:e3:1e:18] AMRR
increasing rate 12 (txcnt=3D11 retrycnt=3D0)
Jan  6 11:10:38 d630 kernel: wlan0: [3a:41:c4:e3:1e:18] AMRR
decreasing rate 11 (txcnt=3D35 retrycnt=3D16)
Jan  6 11:10:43 d630 kernel: wlan0: [3a:41:c4:e3:1e:18] AMRR
decreasing rate 4 (txcnt=3D11 retrycnt=3D4)
Jan  6 11:11:04 d630 kernel: wlan0: [3a:41:c4:e3:1e:18] AMRR
increasing rate 11 (txcnt=3D11 retrycnt=3D0)
Jan  6 11:11:09 d630 wpa_supplicant[413]: CTRL-EVENT-SCAN-RESULTS
Jan  6 11:11:09 d630 kernel: wlan0: [3a:41:c4:e3:1e:18] AMRR
decreasing rate 4 (txcnt=3D11 retrycnt=3D4)

The rate decrease too much for using a browser (but I can still ping
my gateway)=85

Regards,

Olivier



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