IETF Logo Mail Archive

Re: [aqm] [tsvwg] Immediate ECN: Autotuning AQM for RTT

"Fred Baker (fred)" <fred@cisco.com> Wed, 13 November 2013 22:22 UTC

Return-Path: <fred@cisco.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 8E91221E8171; Wed, 13 Nov 2013 14:22:56 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -110.326
X-Spam-Level:
X-Spam-Status: No, score=-110.326 tagged_above=-999 required=5 tests=[AWL=0.046, BAYES_00=-2.599, RCVD_IN_DNSWL_HI=-8, 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 epK98Y5c1QAP; Wed, 13 Nov 2013 14:22:51 -0800 (PST)
Received: from rcdn-iport-4.cisco.com (rcdn-iport-4.cisco.com [173.37.86.75]) by ietfa.amsl.com (Postfix) with ESMTP id DDF0521E80CF; Wed, 13 Nov 2013 14:22:50 -0800 (PST)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=1117; q=dns/txt; s=iport; t=1384381371; x=1385590971; h=from:to:cc:subject:date:message-id:references: in-reply-to:mime-version; bh=iyTJ7IRFixcRu34+T9i+YOagO0XT9MV+mkWSgvg7r/M=; b=BHp+JJx34PLD+B8sFXSiLyebfEi6FBmik1KITyF6QQlgirx0pQl+YKf8 r4yYEV6mZauGYOyRWt8QLwpnsVUz2g+hXorWNxUx0R9zkbZJWU1KBYu3Y qMVtxw+u2PxDfIuTQmX0drYzQP47i32kRLfKNwSE+cAYBwyvj8D+pxCKD g=;
X-Files: signature.asc : 195
X-IronPort-Anti-Spam-Filtered: true
X-IronPort-Anti-Spam-Result: AgIFAGn6g1KtJXG8/2dsb2JhbABZgweBC78sgSgWdIIlAQEBAwEnUgULAgEIRjIlAgQOBQ6HbQbAMY9fB4MggREDkDCBMIYwkguDKIIq
X-IronPort-AV: E=Sophos; i="4.93,695,1378857600"; d="asc'?scan'208"; a="284565200"
Received: from rcdn-core2-1.cisco.com ([173.37.113.188]) by rcdn-iport-4.cisco.com with ESMTP; 13 Nov 2013 22:22:50 +0000
Received: from xhc-aln-x03.cisco.com (xhc-aln-x03.cisco.com [173.36.12.77]) by rcdn-core2-1.cisco.com (8.14.5/8.14.5) with ESMTP id rADMMnMS004192 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=FAIL); Wed, 13 Nov 2013 22:22:50 GMT
Received: from xmb-rcd-x09.cisco.com ([169.254.9.122]) by xhc-aln-x03.cisco.com ([173.36.12.77]) with mapi id 14.03.0123.003; Wed, 13 Nov 2013 16:22:49 -0600
From: "Fred Baker (fred)" <fred@cisco.com>
To: "<curtis@ipv6.occnc.com>" <curtis@ipv6.occnc.com>
Thread-Topic: [aqm] [tsvwg] Immediate ECN: Autotuning AQM for RTT
Thread-Index: AQHO4L7ihqXe1x/pYE67TZ+HW0tSpQ==
Date: Wed, 13 Nov 2013 22:22:48 +0000
Message-ID: <B5E3D723-4301-4E8D-8733-2CBCE8D3FB53@cisco.com>
References: <201311132148.rADLmFMd043739@gateway1.ipv6.occnc.com>
In-Reply-To: <201311132148.rADLmFMd043739@gateway1.ipv6.occnc.com>
Accept-Language: en-US
Content-Language: en-US
X-MS-Has-Attach: yes
X-MS-TNEF-Correlator:
x-originating-ip: [10.19.64.121]
Content-Type: multipart/signed; boundary="Apple-Mail=_17D15C2E-54A9-463B-83C3-E50C6ABFFFA3"; protocol="application/pgp-signature"; micalg="pgp-sha1"
MIME-Version: 1.0
Cc: "Scheffenegger, Richard" <rs@netapp.com>, tsvwg IETF list <tsvwg@ietf.org>, Bob Briscoe <bob.briscoe@bt.com>, tsv-area IETF list <tsv-area@ietf.org>, Greg White <g.white@CableLabs.com>, AQM IETF list <aqm@ietf.org>
Subject: Re: [aqm] [tsvwg] Immediate ECN: Autotuning AQM for RTT
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, 13 Nov 2013 22:22:56 -0000

On Nov 13, 2013, at 1:48 PM, Curtis Villamizar <curtis@ipv6.occnc.com> wrote:

> Having briefly reviewed the execise with hardware guys quite a few
> times, the answer seems to come out to epsilon where epsilon -> 0
> compared to other things the forwarding engine already needs to do.

Pretty much. I was just trying to point out the issues that drive that cost, even if epsilon, and in so doing provide a useful response.

v2.23.0 | Report a Bug | By Email