Re: [AVTCORE] [tsvwg] [rtcweb] WG Last Call on changes: draft-ietf-avtcore-rtp-circuit-breakers-16

"Fred Baker (fred)" <fred@cisco.com> Tue, 28 June 2016 00:10 UTC

Return-Path: <fred@cisco.com>
X-Original-To: avt@ietfa.amsl.com
Delivered-To: avt@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 317AA12DAB7; Mon, 27 Jun 2016 17:10:49 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -115.947
X-Spam-Level:
X-Spam-Status: No, score=-115.947 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, RCVD_IN_MSPIKE_H3=-0.01, RCVD_IN_MSPIKE_WL=-0.01, RP_MATCHES_RCVD=-1.426, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5, USER_IN_WHITELIST=-100] autolearn=ham autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (1024-bit key) header.d=cisco.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 bsFnzNQBIVOO; Mon, 27 Jun 2016 17:10:47 -0700 (PDT)
Received: from alln-iport-8.cisco.com (alln-iport-8.cisco.com [173.37.142.95]) (using TLSv1.2 with cipher DHE-RSA-SEED-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 26F3012DAB5; Mon, 27 Jun 2016 17:10:47 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=1999; q=dns/txt; s=iport; t=1467072647; x=1468282247; h=from:to:cc:subject:date:message-id:references: in-reply-to:mime-version; bh=nUh+eRUAkz0MKZNyoZ4kFaO+q0WnI3KbfwC+kI4poHk=; b=TVkZ3Tgo7puW1WfPQcGafjt3T+E7OU9dM/5LKdJBlpZRLvKfyTV7PkDV 9s1lXAD4pLHnGCzR3pq1VYOCS5/yDSWAziB6toITN2+CfXStJNsRCoTG0 W0EoO47OisFX+V4jUIs+TmaiWVJ1g/gsqVbFAk69sGEjB2QLTAlma8Ko1 g=;
X-Files: signature.asc : 833
X-IronPort-Anti-Spam-Filtered: true
X-IronPort-Anti-Spam-Result: =?us-ascii?q?A0D1AQD1v3FX/4oNJK1bgz6BUwa4G4IPg?= =?us-ascii?q?XuGGAKBMjgUAQEBAQEBAWUnhEwBAQEDAXkFCwIBCBguMiUCBA4FDogaCMEJAQE?= =?us-ascii?q?BAQEBAQEBAQEBAQEBAQEBAQEBDg6IHwiCTodsgi8FmQIBgy2BbIkfjySPfgEeN?= =?us-ascii?q?oI7gTVuiDF/AQEB?=
X-IronPort-AV: E=Sophos;i="5.26,538,1459814400"; d="asc'?scan'208";a="290630131"
Received: from alln-core-5.cisco.com ([173.36.13.138]) by alln-iport-8.cisco.com with ESMTP/TLS/DHE-RSA-AES256-SHA; 28 Jun 2016 00:10:46 +0000
Received: from XCH-ALN-014.cisco.com (xch-aln-014.cisco.com [173.36.7.24]) by alln-core-5.cisco.com (8.14.5/8.14.5) with ESMTP id u5S0AkAg003816 (version=TLSv1/SSLv3 cipher=AES256-SHA bits=256 verify=FAIL); Tue, 28 Jun 2016 00:10:46 GMT
Received: from xch-rcd-013.cisco.com (173.37.102.23) by XCH-ALN-014.cisco.com (173.36.7.24) with Microsoft SMTP Server (TLS) id 15.0.1210.3; Mon, 27 Jun 2016 19:10:45 -0500
Received: from xch-rcd-013.cisco.com ([173.37.102.23]) by XCH-RCD-013.cisco.com ([173.37.102.23]) with mapi id 15.00.1210.000; Mon, 27 Jun 2016 19:10:42 -0500
From: "Fred Baker (fred)" <fred@cisco.com>
To: John Leslie <john@jlc.net>
Thread-Topic: [tsvwg] [AVTCORE] [rtcweb] WG Last Call on changes: draft-ietf-avtcore-rtp-circuit-breakers-16
Thread-Index: AQHR0NGCnW55W4e6ZUygJkpoCO5zfg==
Date: Tue, 28 Jun 2016 00:10:42 +0000
Message-ID: <CF270C0A-8173-40FF-8C37-E4C7FF23FB72@cisco.com>
References: <E16BEA87-1D0F-48F1-A9AC-2729079D581D@tik.ee.ethz.ch> <8C16F1C6-B4A7-4BB4-B215-D7E7EAF308F8@erg.abdn.ac.uk> <CE03DB3D7B45C245BCA0D243277949362F59C41D@MX307CL04.corp.emc.com> <3E053A65-2698-4749-8E3D-E0451DF84011@ifi.uio.no> <BF6B00CC65FD2D45A326E74492B2C19FB76A6433@FR711WXCHMBA05.zeu.alcatel-lucent.com> <32a23d69d22062669f78df806a4eb6b8.squirrel@erg.abdn.ac.uk> <BF6B00CC65FD2D45A326E74492B2C19FB76A659B@FR711WXCHMBA05.zeu.alcatel-lucent.com> <CE03DB3D7B45C245BCA0D243277949362F5AEE02@MX307CL04.corp.emc.com> <6E35FB6C-CA98-413C-B7AE-75402A968017@ifi.uio.no> <3FD27BBF-8E2D-4A42-86A0-C4C0692FF8C9@csperkins.org> <20160628000400.GA1223@verdi>
In-Reply-To: <20160628000400.GA1223@verdi>
Accept-Language: en-US
Content-Language: en-US
X-MS-Has-Attach: yes
X-MS-TNEF-Correlator:
x-mailer: Apple Mail (2.3124)
x-ms-exchange-messagesentrepresentingtype: 1
x-ms-exchange-transport-fromentityheader: Hosted
x-originating-ip: [10.19.64.115]
Content-Type: multipart/signed; boundary="Apple-Mail=_17B46CEF-55F4-4DB9-806E-BB8961CAED68"; protocol="application/pgp-signature"; micalg=pgp-sha1
MIME-Version: 1.0
Archived-At: <https://mailarchive.ietf.org/arch/msg/avt/kXCXHqZ7hYiLxiDzMueEqcLRtbg>
Cc: IETF AVTCore WG <avt@ietf.org>, "rtcweb@ietf.org" <rtcweb@ietf.org>, Colin Perkins <csp@csperkins.org>, Michael Welzl <michawe@ifi.uio.no>, tsvwg <tsvwg@ietf.org>
Subject: Re: [AVTCORE] [tsvwg] [rtcweb] WG Last Call on changes: draft-ietf-avtcore-rtp-circuit-breakers-16
X-BeenThere: avt@ietf.org
X-Mailman-Version: 2.1.17
Precedence: list
List-Id: Audio/Video Transport Core Maintenance <avt.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/avt>, <mailto:avt-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/avt/>
List-Post: <mailto:avt@ietf.org>
List-Help: <mailto:avt-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/avt>, <mailto:avt-request@ietf.org?subject=subscribe>
X-List-Received-Date: Tue, 28 Jun 2016 00:10:49 -0000

> On Jun 27, 2016, at 5:04 PM, John Leslie <john@jlc.net>; wrote:
> 
> Colin Perkins <csp@csperkins.org>; wrote:
>> On 27 Jun 2016, at 21:52, Michael Welzl <michawe@ifi.uio.no>; wrote:
>> 
>>> Why even bother considering CE-marks as information for a circuit breaker?
>> 
>> Because the alternative is that we only break the circuit once the queue
>> has been driven into overflow, and packets have been lost.
>> We want to avoid that, since it causes latency, and too much latency is
>> very bad for the user experience.
> 
>   If you want a circuit-breaker to control latency, why aren't you measuring
> latency?

You mean, like CoDel?