From owner-freebsd-net@FreeBSD.ORG Wed Oct 7 20:33:50 2009 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id DA4C8106566B for ; Wed, 7 Oct 2009 20:33:50 +0000 (UTC) (envelope-from spawk@acm.poly.edu) Received: from acm.poly.edu (acm.poly.edu [128.238.9.200]) by mx1.freebsd.org (Postfix) with ESMTP id 7799E8FC15 for ; Wed, 7 Oct 2009 20:33:49 +0000 (UTC) Received: (qmail 94239 invoked from network); 7 Oct 2009 20:33:48 -0000 Received: from unknown (HELO ?192.168.0.184?) (spawk@66.206.120.2) by acm.poly.edu with AES256-SHA encrypted SMTP; 7 Oct 2009 20:33:48 -0000 Message-ID: <4ACCFADF.6090603@acm.poly.edu> Date: Wed, 07 Oct 2009 16:32:31 -0400 From: Boris Kochergin User-Agent: Thunderbird 2.0.0.23 (Windows/20090812) MIME-Version: 1.0 To: Rui Paulo References: <768BD7F8-7B04-4111-8A69-0D1118361E96@joostm.nl> <4ACCE651.1060607@acm.poly.edu> <824A1142-42E3-4B2E-AE72-489AD5AB7D49@freebsd.org> In-Reply-To: <824A1142-42E3-4B2E-AE72-489AD5AB7D49@freebsd.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: freebsd-net@freebsd.org, Joost Mulders Subject: Re: PCI card for wlan AP X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 07 Oct 2009 20:33:50 -0000 Rui Paulo wrote: > On 7 Oct 2009, at 20:04, Boris Kochergin wrote: >> >> The heavily-used ones exhibit the problem described at: >> >> http://lists.freebsd.org/pipermail/freebsd-net/2009-September/022894.html >> >> >> ...but that's a driver, not a hardware, issue. The one in the router >> at my house doesn't exhibit the problem, the two differences there >> being that the machine is 7.0-RELEASE, and there are only a couple of >> clients connected to it, as opposed to the ~30 connected to my >> heavily-used ones. > > Are you sure you have sufficient RAM to hold 30 users? > > What you seem to be saying is that the ath driver is leaking mbufs and > hence you get a panic, right? > > -- > Rui Paulo > > > Pretty sure. The Soekris has 256 MB of RAM. I suspect that it's a leak because things are usually great, even with ~30 users, with the "80211node" portion from "vmstat -m" only taking a few hundred KiB of RAM. Every few days, it spikes to over 100 MiB, and the "ath0: ath_rx_proc: no mbuf!" kernel messages appear, often followed by a panic. I haven't had time to try another rate-control algorithm, as per the responses to my post, but I'll report back when I do get around to it. -Boris