From owner-freebsd-wireless@FreeBSD.ORG Thu Sep 8 15:13:09 2011 Return-Path: Delivered-To: freebsd-wireless@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 4A97D1065672; Thu, 8 Sep 2011 15:13:09 +0000 (UTC) (envelope-from lev@serebryakov.spb.ru) Received: from onlyone.friendlyhosting.spb.ru (onlyone.friendlyhosting.spb.ru [IPv6:2a01:4f8:131:60a2::2]) by mx1.freebsd.org (Postfix) with ESMTP id 02A9C8FC14; Thu, 8 Sep 2011 15:13:09 +0000 (UTC) Received: from lion.home.serebryakov.spb.ru (unknown [IPv6:2001:470:923f:1:14f9:cfdf:caf2:2c18]) (Authenticated sender: lev@serebryakov.spb.ru) by onlyone.friendlyhosting.spb.ru (Postfix) with ESMTPA id A5B1A4AC31; Thu, 8 Sep 2011 19:13:07 +0400 (MSD) Date: Thu, 8 Sep 2011 19:13:03 +0400 From: Lev Serebryakov X-Priority: 3 (Normal) Message-ID: <1273865639.20110908191303@serebryakov.spb.ru> To: Adrian Chadd In-Reply-To: References: <663133681.20110907193747@serebryakov.spb.ru> <437702009.20110907235248@serebryakov.spb.ru> <426917282.20110908125907@serebryakov.spb.ru> <4610390305.20110908154130@serebryakov.spb.ru> <1705262661.20110908180850@serebryakov.spb.ru> <458771414.20110908183656@serebryakov.spb.ru> <4910491962.20110908185213@serebryakov.spb.ru> MIME-Version: 1.0 Content-Type: text/plain; charset=windows-1251 Content-Transfer-Encoding: quoted-printable Cc: freebsd-wireless@freebsd.org Subject: Re: AP performance (again): txpower regulation X-BeenThere: freebsd-wireless@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "Discussions of 802.11 stack, tools device driver development." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 08 Sep 2011 15:13:09 -0000 Hello, Adrian. You wrote 8 =F1=E5=ED=F2=FF=E1=F0=FF 2011 =E3., 19:07:37: > Right, but please keep in mind that stronger TX power doesn't make the > signal "magically" more reliable and higher throughput. Sure it can > help, but if your problem is interference, you're not going to win by > just buying a more powerful NIC. I understand that... But interference over all range... It will be very sad :( > Have you compiled up athstats and have it available on your AP? What's > it say when you run it? Yep, it is available (9-BETA2 now, iperf is running for about half a hour, second antenna is not attached, as I didn't plan to use 5Ghz): 4936697 data frames received 9101605 data frames transmit 99995 tx frames with an alternate rate 1393550 long on-chip tx retries 12917 tx failed 'cuz too many retries 54M current transmit rate 19218 tx stopped 'cuz no xmit buffer 5 tx failed 'cuz dma buffer allocation failed 387 tx frames with no ack marked 9085818 tx frames with short preamble 29941 rx failed 'cuz of bad CRC 56 rx failed 'cuz of PHY err 56 CCK restart 119985 beacons transmitted 411 periodic calibrations -0/+0 TDMA slot adjust (usecs, smoothed) 37 rssi of last ack 30 avg recv rssi -96 rx noise floor 15402 tx frames through raw api 5 raw tx failed 'cuz interface/hw down 41 cabq frames transmitted 26 cabq xmit overflowed beacon interval 37 switched default/rx antenna 4 noise immunity level 2 spur immunity level 80 listen time 31 ANI increased noise immunity 3 ANI decrease noise immunity 1930 ANI increased spur immunity 1916 ANI decrease spur immunity 13 ANI enabled OFDM weak signal detect 13 ANI disabled CCK weak signal threshold 39809373 cumulative OFDM phy error count 561387 cumulative CCK phy error count 254 ANI forced listen time to zero 1393023 missing ACK's 41881 bad FCS 13 average rssi (beacons only) Antenna profile: [1] tx 8543738 rx 4922481 [2] tx 544837 rx 14216 --=20 // Black Lion AKA Lev Serebryakov