From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <eric.dumazet@gmail.com>
Received: from mail-pd0-x229.google.com (mail-pd0-x229.google.com
	[IPv6:2607:f8b0:400e:c02::229])
	(using TLSv1 with cipher RC4-SHA (128/128 bits))
	(Client CN "smtp.gmail.com",
	Issuer "Google Internet Authority" (verified OK))
	by huchra.bufferbloat.net (Postfix) with ESMTPS id 8D9E921F1B5;
	Tue,  9 Jul 2013 06:36:49 -0700 (PDT)
Received: by mail-pd0-f169.google.com with SMTP id y10so5277716pdj.14
	for <multiple recipients>; Tue, 09 Jul 2013 06:36:49 -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:x-mailer:content-transfer-encoding:mime-version;
	bh=Rm+PAKvm9Glq82g3nFUFzOmw4TRmfKKnc/slwe+QlVA=;
	b=S2PEfIlbhN1eRAXqEpywOJrFRV+KzAR0EnhrM2s781hlZpRKmkcp+Fd8iUWyB5+8wE
	EBoQvAMZvNn5VnOAkuNG7Rc0aaYQsOVki9MWTgIak7kUZ3UUWY1xSkIRtAr+JjITsuOe
	Adbl/Ky74oMgJft30xTfgTLDGFrB4b/j+CHj/1A7lAzyofCnx+Xip9pgpMIBAsdGTzpe
	OhRcCG8CK7krhGMNgFRyBa7u78ujhRqGXwc5L9gspklFFCdYCnb4Yy/d2dy87BGehNQf
	3fHEEoswvYqYuNo5HI15/jL7xsthkle9QrSrF+hU64E6+wclYt6wst6UR12a0tw3AlGr
	+tXg==
X-Received: by 10.66.144.104 with SMTP id sl8mr28412864pab.9.1373377009202;
	Tue, 09 Jul 2013 06:36:49 -0700 (PDT)
Received: from [172.19.248.202] ([172.19.248.202])
	by mx.google.com with ESMTPSA id
	i16sm30255243pag.18.2013.07.09.06.36.48 for <multiple recipients>
	(version=SSLv3 cipher=RC4-SHA bits=128/128);
	Tue, 09 Jul 2013 06:36:48 -0700 (PDT)
Message-ID: <1373377007.4979.152.camel@edumazet-glaptop>
From: Eric Dumazet <eric.dumazet@gmail.com>
To: Toke =?ISO-8859-1?Q?H=F8iland-J=F8rgensen?= <toke@toke.dk>
Date: Tue, 09 Jul 2013 06:36:47 -0700
In-Reply-To: <874nc3x4e0.fsf@toke.dk>
References: <CAA93jw7WPdxKwGGvQoSEfmDN3ey9j7+BNT5yohB6XUyCqbQRtQ@mail.gmail.com>
	<alpine.DEB.2.00.1307040751130.10894@uplift.swm.pp.se>
	<1373223178.486913695@apps.rackspace.com>
	<alpine.DEB.2.00.1307080211340.10894@uplift.swm.pp.se>
	<871u79x9kb.fsf@toke.dk>
	<alpine.DEB.2.00.1307090749480.8891@uplift.swm.pp.se>
	<87obacw4gv.fsf@toke.dk> <1373374593.4979.142.camel@edumazet-glaptop>
	<874nc3x4e0.fsf@toke.dk>
Content-Type: text/plain; charset="UTF-8"
X-Mailer: Evolution 3.2.3-0ubuntu6 
Content-Transfer-Encoding: 8bit
Mime-Version: 1.0
Cc: codel@lists.bufferbloat.net, cerowrt-devel@lists.bufferbloat.net,
	Mikael Abrahamsson <swmike@swm.pp.se>
Subject: Re: [Codel] happy 4th!
X-BeenThere: codel@lists.bufferbloat.net
X-Mailman-Version: 2.1.13
Precedence: list
List-Id: CoDel AQM discussions <codel.lists.bufferbloat.net>
List-Unsubscribe: <https://lists.bufferbloat.net/options/codel>,
	<mailto:codel-request@lists.bufferbloat.net?subject=unsubscribe>
List-Archive: <https://lists.bufferbloat.net/pipermail/codel>
List-Post: <mailto:codel@lists.bufferbloat.net>
List-Help: <mailto:codel-request@lists.bufferbloat.net?subject=help>
List-Subscribe: <https://lists.bufferbloat.net/listinfo/codel>,
	<mailto:codel-request@lists.bufferbloat.net?subject=subscribe>
X-List-Received-Date: Tue, 09 Jul 2013 13:36:49 -0000

On Tue, 2013-07-09 at 15:13 +0200, Toke Høiland-Jørgensen wrote:
> Eric Dumazet <eric.dumazet@gmail.com> writes:
> 
> > What do you mean ? This makes little sense to me.
> 
> The data from my previous post
> (http://archive.tohojo.dk/bufferbloat-data/long-rtt/throughput.txt)
> shows fq_codel achieving higher aggregate throughput in some cases than
> pfifo_fast does.
> 
> > I did not received a copy of your setup, so its hard to tell. But
> > using netem correctly is tricky.
> 
> The setup is this:
> 
> Client <--100mbit--> Gateway <--10mbit--> netem box <--10mbit--> Server
> 
> The netem box adds 100ms of latency to each of its interfaces (with no
> other qdisc applied).

OK, thats a total of 200 ms RTT. Its a pretty high value :(

Could you send "tc -s qdisc" taken at netem box ?