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Date: Mon, 7 Jul 2014 20:28:14 +0200
From: John Hay <jhay@meraka.org.za>
To: Adrian Chadd <adrian@freebsd.org>
Subject: Re: CAMBRIA and more than one atheros card
Message-ID: <20140707182814.GA75629@zibbi.meraka.csir.co.za>
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Cc: "freebsd-wireless@freebsd.org" <freebsd-wireless@freebsd.org>,
 "freebsd-embedded@freebsd.org" <freebsd-embedded@freebsd.org>,
 Ian Lepore <ian@freebsd.org>
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On Mon, Jul 07, 2014 at 11:22:46AM -0700, Adrian Chadd wrote:
> On 7 July 2014 10:12, Ian Lepore <ian@freebsd.org> wrote:
> > On Mon, 2014-07-07 at 09:25 -0700, Adrian Chadd wrote:
> >> hi,
> >>
> >> That call is returning ENOMEM. I'm not sure why. It allocated an mbuf
> >> fine, but it couldn't allocate the DMA map.
> >>
> >> What's the output of "vmstat -z" ? I wonder if it's failing an allocation.
> >>
> >>
> >>
> >> -a
> >
> > Lack of bounce buffers is a posibility that won't show up in vmstat
> > output.
> 
> right, but there's a bunch of already failing vmstat entries.
> 
> 
> John - there's a vmscale parameter somewhere. Hiren had to drop it
> down for his APs to work in 64MB of RAM. I think it's
> vm.kmem_size_scale . What's it say for you?
> 

:~ # sysctl vm.kmem_size_scale
vm.kmem_size_scale: 3

John
-- 
John Hay -- jhay@meraka.csir.co.za / jhay@meraka.org.za