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Re: [aqm] CoDel's control law that determines drop frequency

Jonathan Morton <chromatix99@gmail.com> Wed, 30 September 2015 09:04 UTC

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References: <201311122230.rACMUBmH003536@bagheera.jungle.bt.co.uk> <87wpzfpbd3.fsf@alrua-karlstad.karlstad.toke.dk> <56045CA8.2060103@bobbriscoe.net> <CAPRuP3mmg_-uxmtLUXprCmPyLSUuUA7t2dRZpDs_mwtnTgrSQA@mail.gmail.com> <560BA261.6020206@bobbriscoe.net> <CAA93jw6zdQa1BGDhKajUzORXkCsSCygMPhAsyFfgMqas-w+Xfg@mail.gmail.com>
Date: Wed, 30 Sep 2015 12:04:50 +0300
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From: Jonathan Morton <chromatix99@gmail.com>
To: Dave Taht <dave.taht@gmail.com>
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Cc: Andrew Mcgregor <andrewmcgr@google.com>, Kathleen Nichols <nichols@pollere.com>, Bob Briscoe <ietf@bobbriscoe.net>, AQM IETF list <aqm@ietf.org>, Van Jacobson <vanj@google.com>
Subject: Re: [aqm] CoDel's control law that determines drop frequency
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The combination of flow isolation and "tallest sunflower" dropping on
overflow is a practical safety valve for coping with unresponsive traffic
until Codel catches up with it.  Without that, it would be too easy for one
bad flow to starve out all other traffic.

- Jonathan Morton

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