Date: Thu, 8 Sep 2011 15:41:30 +0400 From: Lev Serebryakov <lev@freebsd.org> To: Berislav Purgar <bpurgar@gmail.com> Cc: freebsd-wireless@freebsd.org Subject: Re: AP performance (again): txpower regulation Message-ID: <4610390305.20110908154130@serebryakov.spb.ru> In-Reply-To: <CAAUsrB5Qtokpcz-koUfYWCHrsnUUErQSAYHrXrW2F0Uvp3RzSA@mail.gmail.com> References: <663133681.20110907193747@serebryakov.spb.ru> <CAJ-Vmonai4LzwanLw7i5d-NyjN2b6GqfttjkdcROvOuEcuzEAw@mail.gmail.com> <437702009.20110907235248@serebryakov.spb.ru> <CAJ-Vmo=R-a%2BqhDLWj1n%2BBj70Pmg4WSL6bVZ6jwCUmNq=v7EBBw@mail.gmail.com> <426917282.20110908125907@serebryakov.spb.ru> <CAAUsrB5Qtokpcz-koUfYWCHrsnUUErQSAYHrXrW2F0Uvp3RzSA@mail.gmail.com>
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Hello, Berislav.
You wrote 8 =D1=81=D0=B5=D0=BD=D1=82=D1=8F=D0=B1=D1=80=D1=8F 2011 =D0=B3., =
13:14:38:
> maybe you device=D1=99 have interference with other devices in room. try
No other 2.4Ghz devices -- only PCs without any wireless devices, no Blue=
Tooth devices, nothing. Microwave oven at kitchen, but of course, it is not=
used at all when I try to debug wireless network :)
> to lower .. turn off other devices if u have in room . what show
> ifconfig wlan0 scan ?? how much is noise level ??=20
``ifconfig wlan0 scan'' shows nothing, as wlan0 in hostap mode, and I hav=
e only MacOS X and Windows XP clients.
I've added wlan1:
gateway# ifconfig wlan1 create wlandev ath0 wlanmode monitor
gateway# ifconfig wlan1 scan
And this kills my WiFi AP, makes signal level (from client side of view) =
jumps up and down, and results on AP is looks like:
gateway# ifconfig wlan1 scan
SSID/MESH ID BSSID CHAN RATE S:N INT CAPS
House 54:e6:fc:c2:08:ca 1 54M -71:-96 100 EPS RSN WPA WME =
HTCAP ATH WPS
gooodini 00:26:5a:ff:ee:e5 2 54M -87:-96 100 EPS RSN WPA WME =
HTCAP ATH
default 00:1f:c6:3c:24:7a 6 54M -80:-96 100 E
00:1e:58:2d:ea:67 3 54M -94:-96 100 EP RSN ATH
ZXL 00:19:cb:0a:71:bc 10 54M -96:-96 100 EP WPA
asus 20:cf:30:88:b5:90 1 54M -91:-96 100 EP WPA
Vlad 00:19:5b:e1:f1:aa 6 54M -89:-96 100 EPS
interzet@2 00:26:18:c6:81:98 1 54M -94:-96 100 EP HTCAP WPS WP=
A WME
knyagna 00:18:e7:ec:1d:eb 3 54M -144:-96 100 EPS RSN WPA WME=
HTCAP ATH WPS
I notice one thing: in periods, when client was kicked from AP, it shows m=
uch stronger signal (sbout -45 dB when -65 is average with associated clien=
t).
> i have AR5212 and it work great over 6m inside house (2 walls).
> transfer rate i get is 2.4~3.2MB/s
My previous card (500mW some strange Australian brand name, buyed on eBay=
, AR5212 based) gives me comparable results, yes. But I've fried it at hot =
summer AND change apartment at almost same time AND upgrade FreeBSD from 7 =
to 8 on router (I didn't have much time to watch HD movies after relocation=
, and didn't notice when situation becomes worse -- there was period of tim=
e when WiFi bandwidth didn't bother me at all). So, I'm not sure now, is it=
new card is crap or new apartment has "shielded" inner walls or FreeBSD8 h=
as other power management. I've tried to build old FreeBSD 7 image for rout=
er, but failed somehow -- kernel hangs on boot. I'll try more in near futur=
e.
--=20
// Black Lion AKA Lev Serebryakov <lev@serebryakov.spb.ru>
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