Re: [aqm] [Bloat] TCP BBR paper is now generally available

Eric Dumazet <eric.dumazet@gmail.com> Sun, 04 December 2016 17:13 UTC

Return-Path: <eric.dumazet@gmail.com>
X-Original-To: aqm@ietfa.amsl.com
Delivered-To: aqm@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id B598012956A for <aqm@ietfa.amsl.com>; Sun, 4 Dec 2016 09:13:22 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2
X-Spam-Level:
X-Spam-Status: No, score=-2 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_PASS=-0.001] autolearn=ham autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=gmail.com
Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id rLqLb-68IZbO for <aqm@ietfa.amsl.com>; Sun, 4 Dec 2016 09:13:21 -0800 (PST)
Received: from mail-pg0-x241.google.com (mail-pg0-x241.google.com [IPv6:2607:f8b0:400e:c05::241]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 29962128B38 for <aqm@ietf.org>; Sun, 4 Dec 2016 09:13:21 -0800 (PST)
Received: by mail-pg0-x241.google.com with SMTP id p66so13776996pga.2 for <aqm@ietf.org>; Sun, 04 Dec 2016 09:13:21 -0800 (PST)
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 :mime-version:content-transfer-encoding; bh=I2NqDghiQcGHTTzG8Y8lPjH+te9PWAUazhRH5ZjzeZE=; b=ZZjnAAvEr2NAY4+uATVxCo+iQz20LDdlfPszvg6ZKSWMkpt7oZTZdWRxFpIgiNkjmV sIjCZgBnLemdJDQmNbei0Tfxh6kzT566/kRlZcweqSoW1hNW9jZ8fhdRW1lsvDopY3XX ZqlnxO3BRtvIXU1WCjA4AHwgAsDrU3osIXFGIVcF5e3ISJwVgdNvwj9AUzUFOXO/Roih c8RG2YUu3BZNvnAwsj3mDrwB+Y6xBOdHXRVh+N3Bg3/+1O1GuR4+UtBs+4OGnKxeDspa Tdmgu+04B/0KTNYp9lb76hpbv3Kvcn8ugZZbv/UwJxibp3f3piOyxH6/USmIAzVB+QxN QPPg==
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:message-id:subject:from:to:cc:date:in-reply-to :references:mime-version:content-transfer-encoding; bh=I2NqDghiQcGHTTzG8Y8lPjH+te9PWAUazhRH5ZjzeZE=; b=hktZrmJWJEvX5urRp+hYZY6/F/kDIseQP9Gj90sAJV3jqkD/s01MteNfMeEolsad96 JW5qDKl57+vAthDKcxGTBSRSOw7xIly64Xj5KKCGrXG0a7wMw/OPhlP/bpKJdsh6s/CW UwN0uWKUuh0uxZ17sWNV4I5QNVpiK0nHU3zPyKcs0JNR3Fl8qcUa3wn1VZa2VN6Fkegt lmuLtXiVafdx/siRhh8m6QFegq9RdIXoQRlEWNn8IpuuyLmgOBUa9EBjZL5P41cQ+Uh7 Iz3Uo+mU7fSMQFmgS5JhlkqVF/6l0RHafFqbeWS2zxLMomr/fK9TwVF1I81tPMLEEUjI lXGw==
X-Gm-Message-State: AKaTC0127t29mBWcCwTjyf64w5Kjwum2SCFtVQH/XvhiGh1ICnzywa6u2Utm8e5BgFlmlQ==
X-Received: by 10.99.65.65 with SMTP id o62mr95784661pga.73.1480871600809; Sun, 04 Dec 2016 09:13:20 -0800 (PST)
Received: from [172.19.250.57] ([172.19.250.57]) by smtp.googlemail.com with ESMTPSA id k25sm21328988pfg.84.2016.12.04.09.13.19 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sun, 04 Dec 2016 09:13:20 -0800 (PST)
Message-ID: <1480871599.18162.465.camel@edumazet-glaptop3.roam.corp.google.com>
From: Eric Dumazet <eric.dumazet@gmail.com>
To: "Steinar H. Gunderson" <sgunderson@bigfoot.com>
Date: Sun, 04 Dec 2016 09:13:19 -0800
In-Reply-To: <20161204084404.GA22199@sesse.net>
References: <1480796415.18162.408.camel@edumazet-glaptop3.roam.corp.google.com> <9A821B94-143B-446F-8852-2EB0158DD57C@gmail.com> <1480799260.18162.418.camel@edumazet-glaptop3.roam.corp.google.com> <20161203213428.GB38041@sesse.net> <1480801837.18162.419.camel@edumazet-glaptop3.roam.corp.google.com> <20161203221338.GC38041@sesse.net> <1480805737.18162.425.camel@edumazet-glaptop3.roam.corp.google.com> <20161203230335.GA40411@sesse.net> <1480806940.18162.434.camel@edumazet-glaptop3.roam.corp.google.com> <1480807468.18162.436.camel@edumazet-glaptop3.roam.corp.google.com> <20161204084404.GA22199@sesse.net>
Content-Type: text/plain; charset="UTF-8"
X-Mailer: Evolution 3.10.4-0ubuntu2
Mime-Version: 1.0
Content-Transfer-Encoding: 7bit
Archived-At: <https://mailarchive.ietf.org/arch/msg/aqm/F3mos21_029J7RVxuanFxtPMLsI>
Cc: Jonathan Morton <chromatix99@gmail.com>, Neal Cardwell <ncardwell@google.com>, "aqm@ietf.org" <aqm@ietf.org>, bloat <bloat@lists.bufferbloat.net>
Subject: Re: [aqm] [Bloat] TCP BBR paper is now generally available
X-BeenThere: aqm@ietf.org
X-Mailman-Version: 2.1.17
Precedence: list
List-Id: "Discussion list for active queue management and flow isolation." <aqm.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/aqm>, <mailto:aqm-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/aqm/>
List-Post: <mailto:aqm@ietf.org>
List-Help: <mailto:aqm-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/aqm>, <mailto:aqm-request@ietf.org?subject=subscribe>
X-List-Received-Date: Sun, 04 Dec 2016 17:13:23 -0000

On Sun, 2016-12-04 at 09:44 +0100, Steinar H. Gunderson wrote:
> On Sat, Dec 03, 2016 at 03:24:28PM -0800, Eric Dumazet wrote:
> > Wait a minute. If you use fq on the receiver, then maybe your old debian
> > kernel did not backport :
> > 
> > https://git.kernel.org/cgit/linux/kernel/git/davem/net.git/commit/?id=9878196578286c5ed494778ada01da094377a686
> 
> I checked, and it does not seem that the patch is in the backport, indeed.
> I suppose I can try just turning off fq on the receiver?

You could turn off pacing , and keep fq.

tc qdisc change dev eth0 root fq nopacing