IETF Logo Mail Archive

Re: [aqm] Draining queues

Joe Touch <touch@isi.edu> Wed, 20 March 2013 16:42 UTC

Return-Path: <touch@isi.edu>
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 9E3F421F85ED for <aqm@ietfa.amsl.com>; Wed, 20 Mar 2013 09:42:46 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -104.949
X-Spam-Level:
X-Spam-Status: No, score=-104.949 tagged_above=-999 required=5 tests=[AWL=1.423, BAYES_00=-2.599, RCVD_IN_DNSWL_MED=-4, SARE_SUB_OBFU_Q1=0.227, USER_IN_WHITELIST=-100]
Received: from mail.ietf.org ([12.22.58.30]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id nXq18RIXnvDR for <aqm@ietfa.amsl.com>; Wed, 20 Mar 2013 09:42:46 -0700 (PDT)
Received: from boreas.isi.edu (boreas.isi.edu [128.9.160.161]) by ietfa.amsl.com (Postfix) with ESMTP id 1B06C21F85D6 for <aqm@ietf.org>; Wed, 20 Mar 2013 09:42:46 -0700 (PDT)
Received: from [192.168.1.89] (pool-71-105-87-221.lsanca.dsl-w.verizon.net [71.105.87.221]) (authenticated bits=0) by boreas.isi.edu (8.13.8/8.13.8) with ESMTP id r2KGeuOt016772 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NOT); Wed, 20 Mar 2013 09:41:05 -0700 (PDT)
Message-ID: <5149E699.10403@isi.edu>
Date: Wed, 20 Mar 2013 09:40:57 -0700
From: Joe Touch <touch@isi.edu>
User-Agent: Mozilla/5.0 (Windows NT 6.2; WOW64; rv:17.0) Gecko/20130307 Thunderbird/17.0.4
MIME-Version: 1.0
To: "Scheffenegger, Richard" <rs@netapp.com>
References: <mailman.5225.1363736608.3432.aqm@ietf.org> <1363748540.64155384@apps.rackspace.com> <20130320035645.GI9569@verdi> <1363787198.319422762@apps.rackspace.com> <012C3117EDDB3C4781FD802A8C27DD4F24AC0750@SACEXCMBX02-PRD.hq.netapp.com>
In-Reply-To: <012C3117EDDB3C4781FD802A8C27DD4F24AC0750@SACEXCMBX02-PRD.hq.netapp.com>
Content-Type: text/plain; charset="ISO-8859-1"; format="flowed"
Content-Transfer-Encoding: 7bit
X-ISI-4-43-8-MailScanner: Found to be clean
X-MailScanner-From: touch@isi.edu
Cc: "dpreed@reed.com" <dpreed@reed.com>, John Leslie <john@jlc.net>, "aqm@ietf.org" <aqm@ietf.org>
Subject: Re: [aqm] Draining queues
X-BeenThere: aqm@ietf.org
X-Mailman-Version: 2.1.12
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: <http://www.ietf.org/mail-archive/web/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: Wed, 20 Mar 2013 16:42:46 -0000

On 3/20/2013 9:31 AM, Scheffenegger, Richard wrote:
> ECN by itself is only part of the solution (and there are discussion to
> achieve more accurate ECN feedback in TCP, for a number of reasons), ECN
> can not live without a proper AQM, and a responsive (!) transport protocol

Don't forget a decent scheduler and polling-based processing too; 
latency reduction is a systems issue, not just a networking one.

Joe

v2.26.15 | Report a Bug | By Email | System Status