[Codel] Jumbo frames with fq_codel

[Dave Taht]

On Mon, Nov 25, 2013 at 10:02 AM, Alessandro Bolletta
<alessandro at mediaspot.net> wrote:
> Hi guys,
> I'm working on an environment which runs on jumbo ethernet frames (about 1550bytes) and I would ask you if do you think that it's needed a trick in order to correctly debloat interfaces as ath9k and ag71xx which carries such big frames.

I am under the impression that the ag71xx does not support jumbo frames.
Slightly larger than usual frames? dunno.

the ath9k supports frames up to the size of the wireless standards
(23xx bytes or so)

fq_codel's internal quantum is the actual ip packet size, not the wire size.
at lower bandwidths it pays to have a lower quantum (like 300) on
outgoing interfaces.

In openwrt the default on all interfaces is 300, which I dont
necessarily agree with.

>
> Thanks
>
> --
> Alessandro Bolletta
> Mediaspot S.r.l.
>
>
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-- 
Dave Täht

Fixing bufferbloat with cerowrt: http://www.teklibre.com/cerowrt/subscribe.html