[Cerowrt-devel] [ath9k-devel] Anyone doing WiFi throughput tests?

Dave Taht dave.taht at gmail.com
Tue May 29 23:22:33 EDT 2012

On Wed, May 30, 2012 at 1:06 AM, Ben Greear <greearb at candelatech.com> wrote:
> On 05/29/2012 12:07 PM, Christian Lamparter wrote:
>> On Tuesday, May 29, 2012 08:23:20 PM Ben Greear wrote:
>>> On 05/27/2012 08:08 AM, Ben Greear wrote:
>>>> On 05/26/2012 09:39 AM, Sujith Manoharan wrote:
>>> We started testing with two AR9380 NICs today (one AP, the other STA).
>>> I applied Felix's skb optimization patch, and the ath9k memleak fix patch
>>> on top of 3.3.7+.
>>> The system has 2GB RAM, but it is 32-bit kernel, so not all
>>> is available to the networking code...  That said, the OOM
>>> killer kills VNC and such.
>>> Anyway, I'll try some memleak debugging to see if
>>> I can find any leaks.  It seems to me that we should
>>> not actually OOM just by trying to transmit too fast
>>> on a station interface :P
>> well, there's that:
>> http://comments.gmane.org/gmane.linux.drivers.ath9k.devel/8233
>> It might not fix the bug, but it can save you time to confirm
>> that is not related to this particular skb leak.
> I ported this to 3.3.7+ and applied it to my kernel
> trees.  It has tested out fine so far, though it did not
> actually fix the problem I was having.  That was not
> a real leak, just always-growing pending queue length,
> probably due to some issue with our version of pktgen.
> It is mostly a port-by-hand type of thing since
> there are lots of conflicts.  Let me know if you'd
> like me to post my version (and plz confirm your
> signed-off-by).

please! (and cc cerowrt-devel at lists.bufferbloat.net)

I'm hoping this string of patches will have some bearing on my own
bug: http://www.bufferbloat.net/issues/379

(while I'm trying to not write a line of code for a while, others on my
 list are struggling with this)

> Thanks,
> Ben
> --
> Ben Greear <greearb at candelatech.com>
> Candela Technologies Inc  http://www.candelatech.com
> --
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Dave Täht
SKYPE: davetaht
US Tel: 1-239-829-5608

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