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Subject: Re: CAMBRIA and more than one atheros card
From: Adrian Chadd <adrian@freebsd.org>
To: Ian Lepore <ian@freebsd.org>
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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?



-a