From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <eric.dumazet@gmail.com>
Received: from mail-wi0-x22c.google.com (mail-wi0-x22c.google.com
	[IPv6:2a00:1450:400c:c05::22c])
	(using TLSv1 with cipher RC4-SHA (128/128 bits))
	(Client CN "smtp.gmail.com",
	Issuer "Google Internet Authority G2" (verified OK))
	by huchra.bufferbloat.net (Postfix) with ESMTPS id 8A88021F814
	for <bloat@lists.bufferbloat.net>; Tue, 28 Jul 2015 07:21:57 -0700 (PDT)
Received: by wibud3 with SMTP id ud3so161947803wib.0
	for <bloat@lists.bufferbloat.net>; Tue, 28 Jul 2015 07:21:55 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113;
	h=message-id:subject:from:to:cc:date:in-reply-to:references
	:content-type:mime-version:content-transfer-encoding;
	bh=UPuGu1SGpalg5eFG+HbGnW+nOl3omtET0OV5J3NLjmQ=;
	b=lbm3s7N1brnRaOG3MTT6hRK0h0755utNHr0M3e5BTCNyuHA9pE+9/+SQEPSSvTAcIP
	GN05HPWUwV86EkJnZIxxJE6fLBTYrCDg97g/iXoEyYb9cT9odjtQgrDb2cOD/Mim26Pf
	pJjyMz09OlzDn7BYd+cOX9aXevErmUAGFa0EbcPSh8VNVFxD0mISiZJFLT9dOJ2EZahw
	FbbdGxQVJgbLpUq+s/3YyNETJ4YL9psLKDrVY/kUN+WCNMn9526N9qRoCuDhujRrV8yw
	PRuZFV5rjFvzMBiYkdPR01JRsfGFqSfOEq/KMZZJ+/4jUjguM3KsEQGPbQCFV8dyN07a
	B/gA==
X-Received: by 10.195.11.168 with SMTP id ej8mr66038693wjd.150.1438093315411; 
	Tue, 28 Jul 2015 07:21:55 -0700 (PDT)
Received: from [172.16.39.41] ([172.16.39.41])
	by smtp.gmail.com with ESMTPSA id
	l14sm8158435wjq.21.2015.07.28.07.21.53
	(version=TLSv1.2 cipher=AES128-GCM-SHA256 bits=128/128);
	Tue, 28 Jul 2015 07:21:54 -0700 (PDT)
Message-ID: <1438093312.20182.49.camel@edumazet-glaptop2.roam.corp.google.com>
From: Eric Dumazet <eric.dumazet@gmail.com>
To: Simon Barber <simon@superduper.net>
Date: Tue, 28 Jul 2015 16:21:52 +0200
In-Reply-To: <14ed5013130.27f7.e972a4f4d859b00521b2b659602cb2f9@superduper.net>
References: <87a8ugqvid.wl-jch@pps.univ-paris-diderot.fr>
	<87r3nstnj5.fsf@toke.dk> <876154qtkt.wl-jch@pps.univ-paris-diderot.fr>
	<87mvygtm1a.fsf@toke.dk>
	<14ed5013130.27f7.e972a4f4d859b00521b2b659602cb2f9@superduper.net>
Content-Type: text/plain; charset="UTF-8"
X-Mailer: Evolution 3.10.4-0ubuntu2 
Mime-Version: 1.0
Content-Transfer-Encoding: 7bit
Cc: bloat <bloat@lists.bufferbloat.net>,
	Juliusz Chroboczek <jch@pps.univ-paris-diderot.fr>
Subject: Re: [Bloat] AQM and PPP on Linux
X-BeenThere: bloat@lists.bufferbloat.net
X-Mailman-Version: 2.1.13
Precedence: list
List-Id: General list for discussing Bufferbloat <bloat.lists.bufferbloat.net>
List-Unsubscribe: <https://lists.bufferbloat.net/options/bloat>,
	<mailto:bloat-request@lists.bufferbloat.net?subject=unsubscribe>
List-Archive: <https://lists.bufferbloat.net/pipermail/bloat>
List-Post: <mailto:bloat@lists.bufferbloat.net>
List-Help: <mailto:bloat-request@lists.bufferbloat.net?subject=help>
List-Subscribe: <https://lists.bufferbloat.net/listinfo/bloat>,
	<mailto:bloat-request@lists.bufferbloat.net?subject=subscribe>
X-List-Received-Date: Tue, 28 Jul 2015 14:22:26 -0000

On Tue, 2015-07-28 at 07:11 -0700, Simon Barber wrote:
> The main danger is the negative effects on performance of using Codel. You 
> may experience low throughput on high RTT links.

Really ? I've never seen this, unless you mess with codel qdisc
attributes maybe.

(Some guys seem to not really understand whole concept of a queue, and
set very low values for 'limit' attribute for example)