Re: [iccrg] ECN statistics for Mac OS X
Mikael Abrahamsson <swmike@swm.pp.se> Mon, 30 March 2015 11:32 UTC
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Date: Mon, 30 Mar 2015 13:32:20 +0200
From: Mikael Abrahamsson <swmike@swm.pp.se>
To: Stuart Cheshire <cheshire@apple.com>
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Subject: Re: [iccrg] ECN statistics for Mac OS X
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On Mon, 23 Mar 2015, Stuart Cheshire wrote: > This implies that 1983 times my laptop has received acks with ECE set, > which suggests that some of its outbound packets experienced congestion > and were marked “CE”. I have not yet identified which device or devices > are marking these packets (if any — it’s possible it could just be a bug > in the statistics reporting). I have had ECN enabled on all my Linux machines and my Mac:s. From the mac: 27112 connections negotiated ECN 0 times congestion notification was sent using ECE 28190 times CWR was sent in response to ECE I am at this time uploading data to the Internet over DOCSIS 3.0 network, congesting my 50 megabit/s uplink. My counter for CWR updates is updating with 5-20 per second or so. I do not know what thing is marking my packets with ECN, the speed limiting factor is the docsis network, so unless my Apple Airport router (the 802.11ac one with time capsule) is marking my packets because it has figured out magically that I have 50 megabit/s uplink, then it should be the DOCSIS network doing the marking. -- Mikael Abrahamsson email: swmike@swm.pp.se
- [iccrg] ECN statistics for Mac OS X Stuart Cheshire
- Re: [iccrg] ECN statistics for Mac OS X Scheffenegger, Richard
- Re: [iccrg] ECN statistics for Mac OS X Eggert, Lars
- Re: [iccrg] ECN statistics for Mac OS X Mikael Abrahamsson