From owner-freebsd-wireless@FreeBSD.ORG Sat Jan 11 05:02:37 2014 Return-Path: Delivered-To: freebsd-wireless@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 3FEC8FAD for ; Sat, 11 Jan 2014 05:02:37 +0000 (UTC) Received: from mail-pb0-x22a.google.com (mail-pb0-x22a.google.com [IPv6:2607:f8b0:400e:c01::22a]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id 176341179 for ; Sat, 11 Jan 2014 05:02:37 +0000 (UTC) Received: by mail-pb0-f42.google.com with SMTP id uo5so5268808pbc.15 for ; Fri, 10 Jan 2014 21:02:36 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:sender:date:message-id:subject:from:to:content-type; bh=RoxKY1V+74ZEDixK5yIDbaDBPxgiQglPzrrFNnNpRyg=; b=lqka3prg5Mpn1OKBxXXI7DsWyUYFy+LveXZhgvhsgHN9A3wrpkIg2ZpHdforSfckd8 dgr7FPAfkpWyO2Md5UiEibuJMgSnZxK5A/yBB68MA9c+2i4zVMUSFIsADwNhhqjnrnGL 3iBfhVbOPxFTZ4DB4u6/rpi+oCHdOP8OZVDfMT+iN8O7voUno4kl5O6QK0KioGh5NZWe nOq2wZORrMSDTGSXqDpMOuGxRkFfvRCTEK1bCpUbfQih3KjFDr3EWb7Q0IFOrMA3m8wi Oi6ex77n7ySHyFSvY++QFwmuZTNWdovAm919jjiKABRUXVHUPvVUQMa4uWjVSpkNaUAT Vt/g== MIME-Version: 1.0 X-Received: by 10.68.17.41 with SMTP id l9mr16166795pbd.76.1389416556640; Fri, 10 Jan 2014 21:02:36 -0800 (PST) Sender: kob6558@gmail.com Received: by 10.67.23.101 with HTTP; Fri, 10 Jan 2014 21:02:36 -0800 (PST) Date: Fri, 10 Jan 2014 21:02:36 -0800 X-Google-Sender-Auth: 63F3zHWrWqyNuayMheI7it_dFEc Message-ID: Subject: IWN performance very bad with 10.0-RC5 From: Kevin Oberman To: FreeBSD Wireless Content-Type: text/plain; charset=UTF-8 X-Content-Filtered-By: Mailman/MimeDel 2.1.17 X-BeenThere: freebsd-wireless@freebsd.org X-Mailman-Version: 2.1.17 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: Sat, 11 Jan 2014 05:02:37 -0000 Since upgrading my system to 10.0-RC# and now 10.0-RC5, by wireless performance has severely degraded. iwn0@pci0:3:0:0: class=0x028000 card=0x13118086 chip=0x00858086 rev=0x34 hdr=0x00 vendor = 'Intel Corporation' device = 'Centrino Advanced-N 6205 [Taylor Peak]' class = network Throughput is down sharply for TCP file transfers (sftp) between it and a local, wired system. Under 9.2-STABLE I was getting about 23 Mbps. With 10.0-rc5, I get about 11M. Testing also shows occasional, short circuit drops, under half a second each. Once in a while under 10.0-rc3 I would see the link drop and stay down. restarting the interface (service netif restart restart) would restore the link. I just upgraded to 10.0-rc5 this afternoon and have not seen the hang to this point, but this only happened every couple of days. I just noticed that the interface is running '11g' and not 'n'. wlan0: flags=8843 metric 0 mtu 1500 ether a0:88:b4:c6:ad:28 inet 192.168.1.5 netmask 0xffffff00 broadcast 192.168.1.255 nd6 options=29 media: IEEE 802.11 Wireless Ethernet OFDM/48Mbps mode 11g status: associated ssid babcom channel 6 (2437 MHz 11g) bssid 00:26:b8:67:c3:2d country US authmode WPA2/802.11i privacy ON deftxkey UNDEF AES-CCM 2:128-bit txpower 15 bmiss 10 scanvalid 60 bgscan bgscanintvl 300 bgscanidle 250 roam:rssi 7 roam:rate 5 protmode CTS wme roaming MANUAL Any idea of the problem or what information I could provide? -- R. Kevin Oberman, Network Engineer, Retired E-mail: rkoberman@gmail.com