Re: [Cake] [Bloat] dslreports and inbound rate shaping

[Aaron Wood <woody77@gmail.com>]

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But will it trigger at all?  If the inbound rate is say 50Mbps, and the
link to the in-home devices are over 100Mbps ethernet, will codel _ever_
see a 5ms buffer on inbound?

Or is the shaping buffering incoming packets, and creating a bundle that it
can measure?  (I don't know the internals of how htb(?) does the limiting)

-Aaron

On Thu, May 21, 2015 at 9:39 AM, Jonathan Morton <chromatix99@gmail.com>
wrote:

> No - at 90% shaping on ingress, 5/5ms will trigger when the visible queue
> has built up to 5ms over a continuous 50ms.  At 95%, it'll trigger at 100ms.
>
> Remember, Codel can't see what's in the dumb FIFO on the upstream end of
> the link. By the time it triggers, there's potentially a lot of queue there
> that it doesn't know about and can't directly measure. That's why it has to
> be more aggressive about the queue it can see.
>
> - Jonathan Morton
>
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