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Date:      Thu, 8 Oct 2009 01:17:16 +0200
From:      Paul B Mahol <onemda@gmail.com>
To:        Boris Kochergin <spawk@acm.poly.edu>
Cc:        freebsd-net@freebsd.org, Rui Paulo <rpaulo@freebsd.org>, Joost Mulders <j@joostm.nl>
Subject:   Re: PCI card for wlan AP
Message-ID:  <3a142e750910071617y2bc3b9e1r9af2d3ce54a818cd@mail.gmail.com>
In-Reply-To: <4ACCFADF.6090603@acm.poly.edu>
References:  <768BD7F8-7B04-4111-8A69-0D1118361E96@joostm.nl> <4ACCE651.1060607@acm.poly.edu> <824A1142-42E3-4B2E-AE72-489AD5AB7D49@freebsd.org> <4ACCFADF.6090603@acm.poly.edu>

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On 10/7/09, Boris Kochergin <spawk@acm.poly.edu> wrote:
> 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:

Interesting, is it actually memory leak?
(I try to hunt one down when using if_ndis(4) but without success)

> 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.



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