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Cc: "cerowrt-devel@lists.bufferbloat.net" <cerowrt-devel@lists.bufferbloat.net>
Subject: Re: [Cerowrt-devel] performance numbers from WRT1200AC (Re: Latest
	build test - new sqm-scripts seem to work;
	"cake overhead 40" didn't)
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X-List-Received-Date: Sat, 27 Jun 2015 23:14:18 -0000

Hi Dave, hi Mikael,

On Jun 27, 2015, at 19:59 , Dave Taht <dave.taht@gmail.com> wrote:

>> [...]
>=20
> Yea, well, you need to use a diffserv enabled test to see marks or
> drops in other queues.
>=20
> Sort of my hope is that cake can run at 940mbit with software rate
> limiting. But we probably need to find ways of parallizing the needed
> softirq.
[=85]

	If we go that route we need to remember adding the 20 bytes =
worth of inter frame gap and preamble to the per packet overhead (in =
addition to the 18 bytes of =93normal=94 ethernet header with frame =
check sequence), otherwise the shaper will not do what we expect it to =
at small packet sizes.

Best Regards
	Sebastian=