Date: Tue, 9 Aug 2011 18:21:55 +0800 From: Adrian Chadd <adrian@freebsd.org> To: Lev Serebryakov <lev@serebryakov.spb.ru> Cc: freebsd-wireless@freebsd.org Subject: Re: Bad host-vased AP performace -- and qouple of questions about FreeBSD WiFi stack tuning Message-ID: <CAJ-Vmo=dU0uVeZdhkTsgwb54aHH8AK7eb5FviS3hjgLppSecQg@mail.gmail.com> In-Reply-To: <281311475.20110809142033@serebryakov.spb.ru> References: <1151152206.20110808220720@serebryakov.spb.ru> <201108090829.18712.bschmidt@freebsd.org> <1681554189.20110809132747@serebryakov.spb.ru> <CAJ-VmokAuF6rmN=x1oTE5jksrbf2Psew7-4Qb%2BWd-=kZS1svaQ@mail.gmail.com> <7764247.20110809135323@serebryakov.spb.ru> <CAJ-Vmom-VdzRpS0S7c8z3rH5tYkbk1Nadw-=R6r65OX-_AOX1A@mail.gmail.com> <281311475.20110809142033@serebryakov.spb.ru>
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2011/8/9 Lev Serebryakov <lev@serebryakov.spb.ru>: > Hello, Adrian. > You wrote 9 =C1=D7=C7=D5=D3=D4=C1 2011 =C7., 14:14:19: > >> txpower 15 is actually 15dBm. Ie, try "ifconfig wlan0 txpower 1.5" :-) > =9ABernhard Schmidt says, that iwn(4) uses half-dBm units and "txpower > 30" on iwn(4) means 15dBm physically. Right. I'll double-check with Bernhard as he's been knee deep in the iwn code. But I can tell you that the value passed from net80211 to ath is 2x the ifconfig power, as the ifconfig txpower is in 0.5 dBm units. So ifconfig wlanX txpower Y ends up storing a txpower value of 2*Y, and that's what ath gets. I bet iwn gets the same. Adrian
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