Date: Wed, 07 Oct 2009 16:32:31 -0400 From: Boris Kochergin <spawk@acm.poly.edu> To: Rui Paulo <rpaulo@freebsd.org> Cc: freebsd-net@freebsd.org, Joost Mulders <j@joostm.nl> Subject: Re: PCI card for wlan AP Message-ID: <4ACCFADF.6090603@acm.poly.edu> In-Reply-To: <824A1142-42E3-4B2E-AE72-489AD5AB7D49@freebsd.org> References: <768BD7F8-7B04-4111-8A69-0D1118361E96@joostm.nl> <4ACCE651.1060607@acm.poly.edu> <824A1142-42E3-4B2E-AE72-489AD5AB7D49@freebsd.org>
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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
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