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Re: [aqm] ACK Suppression

Jana Iyengar <jri@google.com> Mon, 12 October 2015 23:23 UTC

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Date: Mon, 12 Oct 2015 16:23:55 -0700
Message-ID: <CAGD1bZZmNM+0LH+bBR0VyDDfMt9WipKY+b9iu66OsFZO49tVAg@mail.gmail.com>
From: Jana Iyengar <jri@google.com>
To: Jonathan Morton <chromatix99@gmail.com>
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Cc: Greg White <g.white@cablelabs.com>, "dpreed@reed.com" <dpreed@reed.com>, "aqm@ietf.org" <aqm@ietf.org>, Christian Huitema <huitema@microsoft.com>
Subject: Re: [aqm] ACK Suppression
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>
> > On 13 Oct, 2015, at 01:34, Greg White <g.white@CableLabs.com> wrote:
> >
> > But, unfortunately for you, middleboxes have no idea (yet) of what QUIC
> ack packets look like, so they can't prioritize them.
>

Fair point, but that's not unfortunate, it's by design.  We'd like to try
doing things e2e before requiring middleboxes to help, even in this case.
QUIC has the ability to measure delay increases on the forward path, so our
congestion controller can (doesn't yet, but will) filter out delay
variations on the reverse path.

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