From owner-freebsd-wireless@FreeBSD.ORG Thu Sep 8 13:51:57 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 89623106564A; Thu, 8 Sep 2011 13:51:57 +0000 (UTC) (envelope-from jpaetzel@FreeBSD.org) Received: from out4.smtp.messagingengine.com (out4.smtp.messagingengine.com [66.111.4.28]) by mx1.freebsd.org (Postfix) with ESMTP id 4F9678FC1B; Thu, 8 Sep 2011 13:51:57 +0000 (UTC) Received: from compute6.internal (compute6.nyi.mail.srv.osa [10.202.2.46]) by gateway1.nyi.mail.srv.osa (Postfix) with ESMTP id 745AE2A004; Thu, 8 Sep 2011 09:51:56 -0400 (EDT) Received: from frontend1.nyi.mail.srv.osa ([10.202.2.160]) by compute6.internal (MEProxy); Thu, 08 Sep 2011 09:51:56 -0400 DKIM-Signature: v=1; a=rsa-sha1; c=relaxed/relaxed; d= messagingengine.com; h=references:in-reply-to:mime-version :content-transfer-encoding:content-type:message-id:cc:from :subject:date:to; s=smtpout; bh=LdMNPBjtgqirfGUS7Pikjy+jiH0=; b= HPvj6hntv3STG1dzBr/FMR2mAWIR7hRsg9UHFZ0FaszQqjLRl4ClH3p3DbplLVf9 H0cmqsvL45Yje0X6ooK1eC+Z6cN2HnHrBvDDAwjQ01bDq0EzIEpYzg9hvllwY/Dd xVhoFCqyErcPfHKHzxs0Gi8lOdfoGnrrvZzbJH/WbBw= X-Sasl-enc: 7+S75P9gLkujIZcqIyr/z1yg8eAvAWpitHP/fb+PD3Dn 1315489916 Received: from [10.10.1.128] (unknown [216.139.7.151]) by mail.messagingengine.com (Postfix) with ESMTPSA id 2614D78049B; Thu, 8 Sep 2011 09:51:56 -0400 (EDT) References: <201109062237.00788.jpaetzel@freebsd.org> <248CA120-66D2-47C4-AFCB-716552D5AB9D@FreeBSD.org> <201109070907.55652.jpaetzel@freebsd.org> In-Reply-To: Mime-Version: 1.0 (iPhone Mail 8K2) Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=us-ascii Message-Id: <038BB269-7FC5-46B6-A7C0-80D42ACFC087@FreeBSD.org> X-Mailer: iPhone Mail (8K2) From: Josh Paetzel Date: Thu, 8 Sep 2011 06:51:50 -0700 To: Bernhard Schmidt Cc: Josh Paetzel , "freebsd-wireless@freebsd.org" Subject: Re: T510 iwn and 9.0 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 13:51:57 -0000 On Sep 8, 2011, at 12:00 AM, Bernhard Schmidt wrote: > On Wed, Sep 7, 2011 at 18:10, Adrian Chadd wrote:= >> On 8 September 2011 00:07, Josh Paetzel wrote: >>> On Wednesday 07 September 2011 07:27:05 Josh Paetzel wrote: >>>> ifconfig wlan0 -ampdutx >>>=20 >>> I've been associated to the wireless at work for about 30 minutes using t= his >>> parameter with no drops. I'd say this has fixed it, as the drops I was >>> getting yesterday were every minutes or so and basically made it unusabl= e. >=20 > Ok, thanks, so it indeed looks like a TX aggregation issue. Can I talk > you into getting more debug info? > wlandebug 0xffffffff > sysctl dev.iwn.0.debug=3D0xffffffff > That is indeed quite spammy, but I'm not yet sure what I'm looking for exa= ctly.. >=20 Sure. I can do that.=20 > TX aggregation is only started if there is certain amount of traffic, > if you say it is within one minute, what kind of traffic was that? > Just some web serving, email, or..? >=20 It's my desktop. Checking email, connected to an IRC server or three. SSH to= a few places. An NFS mount. Windows in vbox running vsphere client connecti= ng to an ESXi box and a web browser running.=20 > Also, I would be great if you have another device available to capture > a dump of what's going on. The dump shouldn't get too large if it's > only a minute. :) >=20 I can set that up. The WAP is in bridged mode. I can mirror the switch port i= t's on and plug another system in to that port and get a dump.=20 I'll set this all up in a couple hours.=20 >> Cool. Bernhard, didn't you mention the ampdu TX bitmap stuff needed >> some surgery in if_iwn? >=20 > Yeah, for reporting stats to the ratectl algo, which itself needs some > bigger surgery obviously :) But I'm not convinced that this is > related. >=20 > -- > Bernhard Thanks, Josh=