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Date: Thu, 21 May 2015 19:39:13 +0300
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From: Jonathan Morton <chromatix99@gmail.com>
To: Kathleen Nichols <nichols@pollere.com>
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	bloat <bloat@lists.bufferbloat.net>
Subject: Re: [Cake] [Bloat]  dslreports and inbound rate shaping
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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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<p dir=3D"ltr">No - at 90% shaping on ingress, 5/5ms will trigger when the =
visible queue has built up to 5ms over a continuous 50ms.=C2=A0 At 95%, it&=
#39;ll trigger at 100ms.</p>
<p dir=3D"ltr">Remember, Codel can&#39;t see what&#39;s in the dumb FIFO on=
 the upstream end of the link. By the time it triggers, there&#39;s potenti=
ally a lot of queue there that it doesn&#39;t know about and can&#39;t dire=
ctly measure. That&#39;s why it has to be more aggressive about the queue i=
t can see.</p>
<p dir=3D"ltr"> - Jonathan Morton<br>
</p>

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