Regression with iwn drivers (4965BGN) in 8.2-PRERELEASE ?

[Olivier Cochard-Labbé]

2011/1/6 Bernhard Schmidt <bschmidt at 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.

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):

Jan  6 11:02:25 d630 kernel: wlan0: [3a:41:c4:e3:1e:18] AMRR
increasing rate 48 (txcnt=11 retrycnt=0)
Jan  6 11:02:36 d630 kernel: wlan0: [3a:41:c4:e3:1e:18] AMRR
increasing rate 72 (txcnt=11 retrycnt=0)
Jan  6 11:03:02 d630 kernel: wlan0: [3a:41:c4:e3:1e:18] AMRR
increasing rate 96 (txcnt=11 retrycnt=0)

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=11 retrycnt=10)
Jan  6 11:04:09 d630 kernel: wlan0: [3a:41:c4:e3:1e:18] AMRR
decreasing rate 48 (txcnt=13 retrycnt=7)
Jan  6 11:04:10 d630 kernel: wlan0: [3a:41:c4:e3:1e:18] AMRR
decreasing rate 36 (txcnt=43 retrycnt=24)
Jan  6 11:04:11 d630 kernel: wlan0: [3a:41:c4:e3:1e:18] AMRR
decreasing rate 24 (txcnt=84 retrycnt=38)
Jan  6 11:04:12 d630 kernel: wlan0: [3a:41:c4:e3:1e:18] AMRR
decreasing rate 22 (txcnt=25 retrycnt=9)
Jan  6 11:04:12 d630 kernel: wlan0: [3a:41:c4:e3:1e:18] AMRR
decreasing rate 18 (txcnt=31 retrycnt=11)
Jan  6 11:04:13 d630 kernel: wlan0: [3a:41:c4:e3:1e:18] AMRR
decreasing rate 12 (txcnt=29 retrycnt=11)
Jan  6 11:04:13 d630 kernel: wlan0: [3a:41:c4:e3:1e:18] AMRR
decreasing rate 11 (txcnt=53 retrycnt=28)
Jan  6 11:04:18 d630 kernel: wlan0: [3a:41:c4:e3:1e:18] AMRR
decreasing rate 4 (txcnt=17 retrycnt=7)
Jan  6 11:04:20 d630 kernel: wlan0: [3a:41:c4:e3:1e:18] AMRR
decreasing rate 2 (txcnt=11 retrycnt=10)
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=11 retrycnt=0)
Jan  6 11:09:57 d630 kernel: wlan0: [3a:41:c4:e3:1e:18] AMRR
increasing rate 11 (txcnt=11 retrycnt=0)
Jan  6 11:10:30 d630 kernel: wlan0: [3a:41:c4:e3:1e:18] AMRR
increasing rate 12 (txcnt=11 retrycnt=0)
Jan  6 11:10:38 d630 kernel: wlan0: [3a:41:c4:e3:1e:18] AMRR
decreasing rate 11 (txcnt=35 retrycnt=16)
Jan  6 11:10:43 d630 kernel: wlan0: [3a:41:c4:e3:1e:18] AMRR
decreasing rate 4 (txcnt=11 retrycnt=4)
Jan  6 11:11:04 d630 kernel: wlan0: [3a:41:c4:e3:1e:18] AMRR
increasing rate 11 (txcnt=11 retrycnt=0)
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=11 retrycnt=4)

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

Regards,

Olivier