We would like to have 15 minutes =C2=A0= to present the topic of =E2=80=9CAn Open Conges= tion Control Architecture with network cooperation for RDMA fabric .=E2=80=9D=C2=A0 .=

The objective of the work is to provide low l= atency and high=C2=A0 throughput for datacenter applications such as the AI= computing.=C2=A0

=C2=A0

Thanks

Roni Even

https://ieeexplore.ieee.org/document/6496997?tp=3D&arnumber= =3D6496997&queryText=3Dassessing%20ledbat%27s%20delay%20impact

http://heim.ifi.uio.no/~michawe/research/publications/ledbat-im= pact-letters.pdf

=E2=80=A6 which = may be appropriate to cite. (I don=E2=80=99t want to insist! = but at least I wanted to mention it once so you know that this = exists.)

When the LEDBAT WG started, David Ros = and I were assigned to take the lead on the first milestone: a survey of = LEDBAT=E2=80=99ish mechanisms out there. We wrote it, and it=E2=80=99s = RFC 69297.

Then, we made an extended version, as a = paper:

David Ros, Michael Welzl: = "Less-than-Best-Effort Service: A Survey of End-to-End Approaches", IEEE = Communications Surveys and Tutorials 15(2), pp.898-908, = 2013.

https://ieeexplore.ieee.org/document/6226797?tp=3D&arnumber= =3D6226797&contentType=3DEarly%20Access%20Articles&searchField=3DS= earch_All&queryText=3DLess-than-Best-Effort%20Service:%20A%20Survey%20= of%20End-to-End%20Approaches

http://heim.ifi.uio.no/~michawe/research/publications/lbesurvey= .pdf

=E2=80=A6 yet I believe = this work was largely ignored when LEDBAT was designed. (frankly, I = think the idea of this milestone influencing the design was "lip = service" - we hadn=E2=80=99t even begun with the survey when the = mechanism was basically presented as =E2=80=9Cthis is what it is, now we = can fine-tune it a little=E2=80=9D.)

The number of other mechanisms out there, which we = surveyed, is quite large, and some of these mechanisms contain good = ideas. If you do me the favor of reading the survey to see if you find = some inspiration for further design of LEDBAT++, I would feel that this = work was a little less in vain :-)

I=E2=80=99d also like to note that colleagues have = done newer work on LBE after the survey. This one, for = example:

http://dl.ifip.org/db/conf/networking/networking2017/1570334752= .pdf

and this, before it, about CDG (which is available in = Linux AFAIK):

http://dl.ifip.org/db/conf/networking/networking2017/1570350870= .pdf

Cheers,

Michael

On Jul 22, 2019, at 7:41 PM, = Praveen Balasubramanian <pravb=3D40microsoft.com@dmarc.ietf.org> = wrote:

Hi,

We have submitted the draft = below.

https://www.ietf.org/id/draft-balasubramanian-iccrg-ledbatplusp= lus-00.txt

Thanks

-----Original Message-----
From: internet-drafts@ietf.org <internet-drafts@ietf.org>
Sent: Monday, = July 22, 2019 3:35 PM
To: Praveen Balasubramanian <pravb@microsoft.com>; Osman Ertugay <Osman.Ertugay@microsoft.com>; Daniel Havey <dahavey@microsoft.com>
Subject: New = Version Notification for = draft-balasubramanian-iccrg-ledbatplusplus-00.txt

A new version of I-D, = draft-balasubramanian-iccrg-ledbatplusplus-00.txt
has been = successfully submitted by Praveen Balasubramanian and posted to the IETF = repository.

Name: = draft-balasubramanian-iccrg-ledbatplusplus
Revision: 00
Title: LEDBAT++: = Congestion Control for Background Traffic
Document = date: = 2019-07-22
Group: Individual Submission
Pages:= = 10
URL: =            https://nam06.safelinks.protection.outlook.com/?url=3Dhttps%3A%= 2F%2Fwww.ietf.org%2Finternet-drafts%2Fdraft-balasubramanian-iccrg-ledbatpl= usplus-00.txt&data=3D02%7C01%7Cpravb%40microsoft.com%7Cb60a23eb4b2= 14f814e6808d70ef4c69b%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C6369943= 16788042519&sdata=3D87IU%2FKrzc1j0ZVICsyXz15xnnIP9J2ViKHZ%2Fd3cYet= Q%3D&reserved=3D0
Status: =         https://nam06.safelinks.protection.outlook.com/?url=3Dhttps%3A%= 2F%2Fdatatracker.ietf.org%2Fdoc%2Fdraft-balasubramanian-iccrg-ledbatpluspl= us%2F&data=3D02%7C01%7Cpravb%40microsoft.com%7Cb60a23eb4b214f814e6= 808d70ef4c69b%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C636994316788042= 519&sdata=3DN0L2kfBY7kSlnd41Jq7%2BhWARQDsSUGAxIAPjmb%2BpaAA%3D&= ;amp;reserved=3D0
Htmlized: =       https://nam06.safelinks.protection.outlook.com/?url=3Dhttps%3A%= 2F%2Ftools.ietf.org%2Fhtml%2Fdraft-balasubramanian-iccrg-ledbatplusplus-00= &data=3D02%7C01%7Cpravb%40microsoft.com%7Cb60a23eb4b214f814e6808d7= 0ef4c69b%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C636994316788042519&a= mp;amp;sdata=3DykGj6RbmkJGygjk0tA5gecGv06uyklgExb8hGdKuMxU%3D&rese= rved=3D0
Htmlized: =       https://nam06.safelinks.protection.outlook.com/?url=3Dhttps%3A%= 2F%2Fdatatracker.ietf.org%2Fdoc%2Fhtml%2Fdraft-balasubramanian-iccrg-ledba= tplusplus&data=3D02%7C01%7Cpravb%40microsoft.com%7Cb60a23eb4b214f8= 14e6808d70ef4c69b%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C63699431678= 8042519&sdata=3D%2BM0S5HhOuCqRqar4Iwiikt69HVe8mXhKm14WN7793vo%3D&a= mp;amp;reserved=3D0

Abstract:
  This experimental memo = describes LEDBAT++, a set of enhancements to
=   the LEDBAT (Low Extra Delay Background Transport) congestion = control
  algorithm for background traffic. = The LEDBAT congestion control
  algorithm = has several shortcomings that prevent it from working
=   effectively in practice. LEDBAT++ extends LEDBAT by = adding a set of
  improvements, including = reduced congestion window gain, modified
=   slow-start, multiplicative decrease and periodic slowdowns. = This set
  of improvement mitigates the = known issues with the LEDBAT algorithm,
  such = as latency drift, latecomer advantage and inter-LEDBAT fairness.
  LEDBAT++ has been implemented as a TCP = congestion control algorithm
  in the Windows = operating system. LEDBAT++ has been deployed in
=   production at scale on a variety of networks and been = experimentally
  verified to achieve the = original stated goals of LEDBAT.

Please note that it may take a = couple of minutes from the time of submission until the htmlized version = and diff are available at tools.ietf.org.

The IETF = Secretariat

_______________________________________________
iccrg mailing list
iccrg@irtf.org
https://www.irtf.org/mailman/listinfo/iccrg

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localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id A4AE712001E for ; Mon, 22 Jul 2019 17:43:50 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -4.199 X-Spam-Level: X-Spam-Status: No, score=-4.199 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_NONE=0.001, SPF_PASS=-0.001] autolearn=unavailable autolearn_force=no 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 tGEeoF2U1K8t for ; Mon, 22 Jul 2019 17:43:49 -0700 (PDT) Received: from mail-out02.uio.no (mail-out02.uio.no [IPv6:2001:700:100:8210::71]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id A9FEC1200BA for ; Mon, 22 Jul 2019 17:43:49 -0700 (PDT) Received: from mail-mx11.uio.no ([129.240.10.83]) by mail-out02.uio.no with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.92) (envelope-from ) id 1hpiu9-000D9I-4t; Tue, 23 Jul 2019 02:43:45 +0200 Received: from dhcp-9902.meeting.ietf.org ([31.133.153.2]) by mail-mx11.uio.no with esmtpsa (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) user michawe (Exim 4.92) (envelope-from ) id 1hpiu8-0005xp-GO; Tue, 23 Jul 2019 02:43:45 +0200 From: Michael Welzl Message-Id: <4715AB82-9615-4679-BF83-90FC961BDACB@ifi.uio.no> Content-Type: multipart/alternative; boundary="Apple-Mail=_FD2F41EB-3EE7-4C68-B1DB-1591FC07BB92" Mime-Version: 1.0 (Mac OS X Mail 12.4 \(3445.104.11\)) Date: Mon, 22 Jul 2019 20:43:41 -0400 In-Reply-To: Cc: Praveen Balasubramanian , "iccrg@irtf.org" , Osman Ertugay To: Daniel Havey References: <156383487555.22746.643619690046904120.idtracker@ietfa.amsl.com>

X-Mailer: Apple Mail (2.3445.104.11) X-UiO-SPF-Received: Received-SPF: neutral (mail-mx11.uio.no: 31.133.153.2 is neither permitted nor denied by domain of ifi.uio.no) client-ip=31.133.153.2; envelope-from=michawe@ifi.uio.no; helo=dhcp-9902.meeting.ietf.org; X-UiO-Spam-info: not spam, SpamAssassin (score=-5.0, required=5.0, autolearn=disabled, HTML_MESSAGE=0.001, UIO_MAIL_IS_INTERNAL=-5, uiobl=NO, uiouri=NO) X-UiO-Scanned: 7B545500C257B7B17E397B52837ED05E60D446FE Archived-At: Subject: Re: [iccrg] New Version Notification for draft-balasubramanian-iccrg-ledbatplusplus-00.txt X-BeenThere: iccrg@irtf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Discussions of Internet Congestion Control Research Group \(ICCRG\)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 23 Jul 2019 00:43:51 -0000 --Apple-Mail=_FD2F41EB-3EE7-4C68-B1DB-1591FC07BB92 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=utf-8 Woops, a mistake: > When the LEDBAT WG started, David Ros and I were assigned to take the = lead on the first milestone: a survey of LEDBAT=E2=80=99ish mechanisms = out there. We wrote it, and it=E2=80=99s RFC 69297. Tens of thousands of RFCs! Holy cow! =3D> that should be RFC 6297 :-) Cheers, Michael --Apple-Mail=_FD2F41EB-3EE7-4C68-B1DB-1591FC07BB92 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=utf-8 Woops, a mistake:

When the LEDBAT WG started, David Ros = and I were assigned to take the lead on the first milestone: a survey of = LEDBAT=E2=80=99ish mechanisms out there. We wrote it, and it=E2=80=99s = RFC 69297.

Tens of thousands of RFCs! Holy = cow!

=3D> that should be = RFC 6297 :-)

Cheers,

Michael

= --Apple-Mail=_FD2F41EB-3EE7-4C68-B1DB-1591FC07BB92-- From nobody Mon Jul 22 21:28:23 2019 Return-Path: X-Original-To: iccrg@ietfa.amsl.com Delivered-To: iccrg@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id E1016120018 for ; Mon, 22 Jul 2019 21:28:21 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -17.499 X-Spam-Level: X-Spam-Status: No, score=-17.499 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIMWL_WL_MED=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, ENV_AND_HDR_SPF_MATCH=-0.5, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001, USER_IN_DEF_DKIM_WL=-7.5, USER_IN_DEF_SPF_WL=-7.5] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=google.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 bwkhHwQ5nM9M for ; Mon, 22 Jul 2019 21:28:20 -0700 (PDT) Received: from mail-oi1-x22e.google.com (mail-oi1-x22e.google.com [IPv6:2607:f8b0:4864:20::22e]) (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 E9914120041 for ; Mon, 22 Jul 2019 21:28:19 -0700 (PDT) Received: by mail-oi1-x22e.google.com with SMTP id s184so31309346oie.9 for ; Mon, 22 Jul 2019 21:28:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=mime-version:from:date:message-id:subject:to; bh=TChxoh9ezfA/XiDqsgW4ZiAt0V/t07RpCBZodesgEbY=; b=q1w/2C+7CoiFM5O2dSyWF1YkLx6ICpOWqhFk+Me99ZcXb4+OQRyqrK/3rldHGhmaPQ 0a0x2MFi3NdjtvNv5Q7734g8bHWXpv1mxfe+rZdJtmx+j5h2ByJdJWPn1d2dGIAzPl7E NWa+Zgg/ATHhgJeBxN/y/hSJrvoeeKZkLhsMmTECO4q0sVpyvP8s90cusJlZIpHNPwbp bE//G6OZfrdARdA/ziLz6/CpuBci8vKl+Et0FCAkSLJUsp0xdSFXRNKY7skr8uVgSzM4 9u45c6Rr73AZjidls84X9SlOpcctYx0dwh8DjENvBOo1cQ60qbqOVLhsMZM8ymjAkYuR X8Jw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to; bh=TChxoh9ezfA/XiDqsgW4ZiAt0V/t07RpCBZodesgEbY=; b=Zyjx1n77j4aN6XmW3Tc8DN/ePIybGD/PXCo405PXcKoGJo6FJ1Dnw7zDAW5hQfiCx6 uOTn5bt/4aL4uGFf+tusPzAgHw9L050ZzzmjNUsg7mttSeUrgh4e7SJv3z4VoqRyoCrR kko4LHyab4IBHFZw05Ls206X4Qv5ntIr36QhgQ5zi8zSHH1AZVWTy9cqgNbZXL8FLh0Z xnCANESF+U9irpqslc2WLmpdO7dUFzOFZtPVNmfY3N4qoJxJZ7HDsnRuw4Wv5HiwuEcV NlYDedErCKKa7IiaGau3vYPtNJfkmvNJtTE1aEjV/aJ3SEEhbA2hXHbglhAsT1hGILwd /MeQ== X-Gm-Message-State: APjAAAUr/SSuU2dKjBvXD9D1ivPPC9V+0VxjJRSsMEEr74UQSpPs6X/k fi9MpXCgDqwMCvN6x6umPPNxpCgGkF3wkLChYAjb3w== X-Google-Smtp-Source: APXvYqyVF4SqNzTEjedMolOsxoa62iw14YLezQ/cqP5eweRSWUs1fqNWlvCGE88NKh7N3hwkDYamWsionHdxrgDQ1bM= X-Received: by 2002:aca:b104:: with SMTP id a4mr16250046oif.14.1563856098883; Mon, 22 Jul 2019 21:28:18 -0700 (PDT) MIME-Version: 1.0 From: Neal Cardwell Date: Tue, 23 Jul 2019 00:28:02 -0400 Message-ID: To: BBR Development , iccrg IRTF list Content-Type: multipart/alternative; boundary="0000000000004164b9058e519ff4" Archived-At: Subject: [iccrg] BBR v2 Alpha/Preview Release (slides and code) X-BeenThere: iccrg@irtf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Discussions of Internet Congestion Control Research Group \(ICCRG\)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 23 Jul 2019 04:28:22 -0000 --0000000000004164b9058e519ff4 Content-Type: text/plain; charset="UTF-8" We wanted to mention these updates: o TCP BBR v2 Alpha/Preview Release: https://github.com/google/bbr/blob/v2alpha/README.md (Chromium QUIC release is coming soon.) o Slides for an update on BBR work at Google, including this release, at the IETF 105 ICCRG session tomorrow: https://datatracker.ietf.org/meeting/105/materials/slides-105-iccrg-bbr-v2-a-model-based-congestion-control-00 cheers, neal --0000000000004164b9058e519ff4 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable

We wanted to mention these updates:

o TCP BBR v2 Alpha/Preview Release:

=C2=A0=C2=A0https://github.com/google= /bbr/blob/v2alpha/README.md

=C2=A0 (Chromium QUIC release= is coming soon.)

o Slides for an update on = BBR work at Google, including this release, at the IETF 105 ICCRG session t= omorrow:

=C2=A0=C2=A0ht= tps://datatracker.ietf.org/meeting/105/materials/slides-105-iccrg-bbr-v2-a-= model-based-congestion-control-00

ch= eers,

neal

--0000000000004164b9058e519ff4-- From nobody Tue Jul 23 11:57:00 2019 Return-Path: X-Original-To: iccrg@ietfa.amsl.com Delivered-To: iccrg@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id DED1712070F for ; Tue, 23 Jul 2019 11:56:58 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -4.199 X-Spam-Level: X-Spam-Status: No, score=-4.199 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_MED=-2.3, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no 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 uGHDSV8tG7iO for ; Tue, 23 Jul 2019 11:56:57 -0700 (PDT) Received: from huawei.com (szxga08-in.huawei.com [45.249.212.255]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 4D65A12075F for ; Tue, 23 Jul 2019 11:56:57 -0700 (PDT) Received: from DGGEMM406-HUB.china.huawei.com (unknown [172.30.72.53]) by Forcepoint Email with ESMTP id D2FD1D2BE5BD5548FAF9 for ; Wed, 24 Jul 2019 02:56:54 +0800 (CST) Received: from DGGEMM422-HUB.china.huawei.com (10.1.198.39) by DGGEMM406-HUB.china.huawei.com (10.3.20.214) with Microsoft SMTP Server (TLS) id 14.3.439.0; Wed, 24 Jul 2019 02:56:54 +0800 Received: from DGGEMM506-MBX.china.huawei.com ([169.254.3.119]) by dggemm422-hub.china.huawei.com ([10.1.198.39]) with mapi id 14.03.0439.000; Wed, 24 Jul 2019 02:56:51 +0800 From: "Roni Even (A)" To: iccrg IRTF list Thread-Topic: An Open Congestion Control Architecture with network cooperation for RDMA fabric Thread-Index: AdVBYxyTwvklxU3fSXG70Ej2stPZdg== Date: Tue, 23 Jul 2019 18:56:51 +0000 Message-ID: <6E58094ECC8D8344914996DAD28F1CCD23D21AFF@DGGEMM506-MBX.china.huawei.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.124.182.135] Content-Type: multipart/alternative; boundary="_000_6E58094ECC8D8344914996DAD28F1CCD23D21AFFDGGEMM506MBXchi_" MIME-Version: 1.0 X-CFilter-Loop: Reflected Archived-At: Subject: [iccrg] An Open Congestion Control Architecture with network cooperation for RDMA fabric X-BeenThere: iccrg@irtf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Discussions of Internet Congestion Control Research Group \(ICCRG\)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 23 Jul 2019 18:56:59 -0000 --_000_6E58094ECC8D8344914996DAD28F1CCD23D21AFFDGGEMM506MBXchi_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Hi, We uploaded a presentation on Open Congestion Control Architecture with net= work cooperation for RDMA fabric. This is a managed environment. The slides are in slides-105-iccrg-an-open-congestion-control-architecture-with-network-coope= ration-for-rdma-fabric-00. There are two documents related to the slides= and are referenced in the slides. The document introduces an open architecture to support multiple congestion= algorithms in the NIC. The other feature is to have the network switches when they are the congest= ion point to become also the notification point, this will reduce the time = it will take the response to reach the sender. It is not dependent on the = congestion algorithm but in our case since we talk about RDMA fabric we tes= ted with DCQCN. The initial results of the notification from the switch ar= e in the slides. We intend in the future to propose this control message that can be used by= also by other similar use cases. We were unable to present during the session due to time constrains and wil= l be happy to get any comments. We are looking for feedback and intend to continue this work. Roni Even --_000_6E58094ECC8D8344914996DAD28F1CCD23D21AFFDGGEMM506MBXchi_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Hi,

We uploaded a presentation on Open Congestion Contro= l Architecture with network cooperation for RDMA fabric. This is a managed = environment.

The slides are in

slides-105-iccrg-an-open-congestion-co= ntrol-architecture-with-network-cooperation-for-rdma-fabric-00. There are two documents related to the slides and are referenced in the sl= ides.

The document introduces an open architecture to supp= ort multiple congestion algorithms in the NIC.

The other feature is to have the network switches wh= en they are the congestion point to become also the notification point, thi= s will reduce the time it will take the response to reach the sender. = ;It is not dependent on the congestion algorithm but in our case since we talk about RDMA fabric we tested with D= CQCN. The initial results of the notification from the switch are in = the slides.

We intend in the future to propose this control mess= age that can be used by also by other similar use cases.

We were unable to present during the session due to = time constrains and will be happy to get any comments.

We are looking for feedback and intend to continue t= his work.

Roni Even

--_000_6E58094ECC8D8344914996DAD28F1CCD23D21AFFDGGEMM506MBXchi_-- From nobody Tue Jul 23 15:14:52 2019 Return-Path: X-Original-To: iccrg@ietfa.amsl.com Delivered-To: iccrg@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 383A41209DE for ; Tue, 23 Jul 2019 15:14:44 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.898 X-Spam-Level: X-Spam-Status: No, score=-1.898 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no 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 V5JPpW3lRWBB for ; Tue, 23 Jul 2019 15:14:41 -0700 (PDT) Received: from mx1.cnes.fr (mx1.cnes.fr [194.199.174.200]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id DDE5D1209D2 for ; Tue, 23 Jul 2019 15:14:40 -0700 (PDT) X-IronPort-AV: E=Sophos;i="5.64,300,1559520000"; d="scan'208,217";a="9432007" X-IPAS-Result: =?us-ascii?q?A2EjBgA1hjdd/wIBeApmgy5YgQMUgS4KmTaRfYYXgWcJA?= =?us-ascii?q?QEBAQEBAQEBGxAMAQGEQAKCcjgTAQMBAQEEAQEBAQQBAQIChU45AQuFUC87I?= =?us-ascii?q?wEVFVYmAQQbgxuBHXysKxqEHAOFfwaBNIFjjBKBEUaBTkmDVAIBgS0BEgEhg?= =?us-ascii?q?zuCJgSTcn6HbY4GBwKBMmkDghySCHOMWAOKPI01mV9MPXEzGieDOIFKgh4BB?= =?us-ascii?q?4dXhT9yAY0JgSKBIQEB?= X-URL-LookUp-ScanningError: 1 From: Kuhn Nicolas To: "iccrg@irtf.org" Thread-Topic: Following up with (r)LEDBAT(++) presentations Thread-Index: AdVBoRtOiBYn2SLUTXKZEtZhVHp42w== Date: Tue, 23 Jul 2019 22:13:38 +0000 Deferred-Delivery: Tue, 23 Jul 2019 22:14:37 +0000 Message-ID: Accept-Language: fr-FR, en-US Content-Language: fr-FR X-MS-Has-Attach: X-MS-TNEF-Correlator: x-tm-as-product-ver: SMEX-11.0.0.4255-8.100.1062-24792.000 x-tm-as-result: No--20.937500-0.000000-31 x-tm-as-user-approved-sender: Yes x-tm-as-user-blocked-sender: No Content-Type: multipart/alternative; boundary="_000_F3B0A07CFD358240926B78A680E166FF1EC2505BTWMBXP03cnesnet_" MIME-Version: 1.0 Archived-At: Subject: [iccrg] Following up with (r)LEDBAT(++) presentations X-BeenThere: iccrg@irtf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Discussions of Internet Congestion Control Research Group \(ICCRG\)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 23 Jul 2019 22:14:51 -0000 --_000_F3B0A07CFD358240926B78A680E166FF1EC2505BTWMBXP03cnesnet_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hi, Thanks for the presentations on LEDBAT-related work. I think that further evaluations of the proposals are required to better as= sess their relevance and their parameters. Most of the content of this email was sent after the first presentation of = LEDBAT++ but the points that are mentioned there seems still valid. I hope this helps. - Multiple LEDBAT-like protocols There are multiple "lower than best effort" protocols in the wild that seem= s relevant (e.g. CDG [1][2], FLOWER [3]) since they consider LEDBAT's issue= s in their state-of-the art. Moreover, it is worth pointing out that CDG i= s in the Linux kernel and has a "lower than best effort" option. You may wa= nt to consider them in your evaluations. - Interactions between LBE and AQM Authors of [4] and [5] showed that there can be important issues when LBE s= chemes cohabit with AQM mechanisms. It may be worth considering AQM in your= evaluations. - On the rationale of using fixed target delays Using 'fixed' target delays does not seem to be a good option if protocols = are to somehow be 'network independent' - unless the selected timers are re= levant for data-centers and satellite corner cases ? It may be worth considering various deployment scenarios in the assessment = of the proposal. [1] David A. Hayes, Grenville Armitage (May 2011). Revisiting TCP congestio= n control using delay gradients. 10th International IFIP TC 6 Networking Co= nference (NETWORKING 2011) [2] Tangenes, Tor Christian, David A. Hayes, Andreas Petlund and David Ros.= "Evaluating CAIA Delay Gradient as a Candidate for Deadline-Aware Less-tha= n-Best-Effort Transport." (2017). [3] Trang, Si Quoc Viet and Lochin, Emmanuel and Baudoin, C=E9dric and Dubo= is, Emmanuel and Gelard, Patrick FLOWER - Fuzzy Lower-than-Best-Effort Tran= sport Protocol (2015) In: The 40th IEEE Conference on Local Computer Networ= ks (LCN), 26 October 2015 - 29 October 2015 [4] Y. Gong, D. Rossi, C. Testa, S. Valenti and M. D. T=E4ht, "Fighting the= bufferbloat: On the coexistence of AQM and low priority congestion control= ," 2013 Proceedings IEEE INFOCOM, Turin, 2013, pp. 3291-3296. [5] https://www.ietf.org/proceedings/93/slides/slides-93-iccrg-2.pdf Cheers, Nico --_000_F3B0A07CFD358240926B78A680E166FF1EC2505BTWMBXP03cnesnet_ Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Hi,

Thanks for the presentations on= LEDBAT-related work.

I think that further evaluation= s of the proposals are required to better assess their relevance and their = parameters.

Most of the content of this ema= il was sent after the first presentation of LEDBAT++ but the points= that are mentioned there seems still valid.

I hope this helps. <= /span>

- Multiple LEDBAT-like protocol= s

There are multiple "lower = than best effort" protocols in the wild that seems relevant (e.g. CDG = [1][2], FLOWER [3]) since they consider LEDBAT's issues in their state-of-t= he art. Moreover, it is worth pointing out that CDG is in the Linux kernel and has a “lower than best effort” = option. You may want to consider them in your evaluations.

- Interactions between LBE and = AQM

Authors of [4] and [5] showed t= hat there can be important issues when LBE schemes cohabit with AQM mechani= sms. It may be worth considering AQM in your evaluations.

- On the rationale of using fix= ed target delays

Using 'fixed' target delays doe= s not seem to be a good option if protocols are to somehow be 'network inde= pendent' - unless the selected timers are relevant for data-centers and sat= ellite corner cases ?

It may be worth considering var= ious deployment scenarios in the assessment of the proposal.

[1] David A. Hayes, Grenville A= rmitage (May 2011). Revisiting TCP congestion control using delay gradients= . 10th International IFIP TC 6 Networking Conference (NETWORKING 2011)=

[2] Tangenes, Tor Christian, Da= vid A. Hayes, Andreas Petlund and David Ros. “Evaluating CAIA Delay G= radient as a Candidate for Deadline-Aware Less-than-Best-Effort Transport.&= #8221; (2017).

[3] Trang, Si Quoc Viet and Loc= hin, Emmanuel and Baudoin, C=E9dric and Dubois, Emmanuel and Gelard, Patric= k FLOWER - Fuzzy Lower-than-Best-Effort Transport Protocol (2015) In: The 4= 0th IEEE Conference on Local Computer Networks (LCN), 26 October 2015 - 29 October 2015

[4] Y. Gong, D. Rossi, C. Testa= , S. Valenti and M. D. T=E4ht, "Fighting the bufferbloat: On the coexi= stence of AQM and low priority congestion control," 2013 Proceedings I= EEE INFOCOM, Turin, 2013, pp. 3291-3296.

[5] https://www.ietf.org/procee= dings/93/slides/slides-93-iccrg-2.pdf

Cheers,

Nico

--_000_F3B0A07CFD358240926B78A680E166FF1EC2505BTWMBXP03cnesnet_-- From nobody Tue Jul 23 17:36:32 2019 Return-Path: X-Original-To: iccrg@ietfa.amsl.com Delivered-To: iccrg@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id EA7761200B9 for ; Tue, 23 Jul 2019 17:36:30 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -17.501 X-Spam-Level: X-Spam-Status: No, score=-17.501 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIMWL_WL_MED=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, ENV_AND_HDR_SPF_MATCH=-0.5, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5, USER_IN_DEF_SPF_WL=-7.5] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=google.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 2W7Cbp6eaBTU for ; Tue, 23 Jul 2019 17:36:28 -0700 (PDT) Received: from mail-oi1-x22b.google.com (mail-oi1-x22b.google.com [IPv6:2607:f8b0:4864:20::22b]) (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 C9B0B1209A8 for ; Tue, 23 Jul 2019 17:36:28 -0700 (PDT) Received: by mail-oi1-x22b.google.com with SMTP id v186so33739384oie.5 for ; Tue, 23 Jul 2019 17:36:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=mime-version:from:date:message-id:subject:to:cc; bh=cJrfn2s7QBndfBHSEElzeSU3JuCBJwE1gVQVCxUmXnM=; b=KWr1OasCty2o/3TpOCfWfwwxAiM7i5OWS0mWmb8/RAMgn1bmCJPa7Qf4reS4YyvI2x izxIaO3rxPOMWXOC/7aYLLuPEkvvMBrerMBpD2QuaT0AAhvIKjSwsfO+N+IK3b5JwI0d 9h/xSsCEpSFMMxmXT7VO8oiQvtnRlYsBBmh9SVUYY98ASh8pceR70dORvpi1NC8hA0i4 zPSd8VuELvZIyE5eFTM8W3MICyAdQkYZ9+zEdJsqnb7y3zQptHSda3s77Z8iQLs9KmL0 AL7Y9ITOlToTMN41hcXrJwtTHhCUiiHwzCrPJZEed4wfYIZ7YIWg6uBNLt9hPklQLRso cjTw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to:cc; bh=cJrfn2s7QBndfBHSEElzeSU3JuCBJwE1gVQVCxUmXnM=; b=keM3W91YX9fQzrg50KFqrUTkj6QvRCkL4ARNm/u69xx4vhzfOMW3cqYt0W4dd0pm0P f3wUHkcWizKc+3eKmdoqq5Ui+oMqFK10mLVC7kWcRn98EiwEqkgeD3n9YGbyLrzvY5KE 5VK+M8LxJeF3MAAXpPjNHyK7S4qMzM+SLIs6RQJJkLhLHMl7xL1NDPdirWaT2pmw9j7Z 6KoIyonnYi3SEl9IIRHUpQ0YWjOCIuSukq6BxvPS0GJlZ/bZ2D8XwTleSy23bauZxixL cxTdSi2WtdGMhOyokhFtqTsMICEuFSYuc0ftMBfpnAfOfiRudB9EgH0afUKy4TwIEHzI sMkg== X-Gm-Message-State: APjAAAWz9XlEnDQuE6XU00S5WN8QJRVy56v37duQLNhBrkXYtex4BNYI 5xLziw7TtymA6PtsCEIzDi/pf6+tk/E9v5tsrYrmyqJSAUaYXpyd X-Google-Smtp-Source: APXvYqyPjgnwd/MFdJBi7Sl1pdwn8rbI6tJRdu3Qy5jZ1FDByUtRyd4txOPPoi+kwabZy7VaVKZqauWz7V9y89YUAOU= X-Received: by 2002:aca:4ad2:: with SMTP id x201mr38637055oia.129.1563928587488; Tue, 23 Jul 2019 17:36:27 -0700 (PDT) MIME-Version: 1.0 From: Neal Cardwell Date: Tue, 23 Jul 2019 20:36:11 -0400 Message-ID: To: iccrg IRTF list , Praveen Balasubramanian , marcelo bagnulo braun Cc: Yuchung Cheng Content-Type: text/plain; charset="UTF-8" Archived-At: Subject: [iccrg] LEDBAT++, rLEDBAT, and slowdowns X-BeenThere: iccrg@irtf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Discussions of Internet Congestion Control Research Group \(ICCRG\)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 24 Jul 2019 00:36:31 -0000 Thanks for today's presentations on LEDBAT++ and rLEDBAT. These are nice work, and I agree they are important improvements on LEDBAT, and worth pursuing as working group efforts, with a goal of standardizing these algorithms in some form. I had two related questions on slowdowns: (1) Regarding LEDBAT++ and slowdowns: https://tools.ietf.org/html/draft-balasubramanian-iccrg-ledbatplusplus-00#section-4.4 To try to avoid latency drift in the base delay, the LEDBAT++ design describes periodic slowdowns that cut cwnd to 2 packets. As far as I'm aware, the only way the flows would be able to refresh an accurate notion of the base delay would be if there is at least one slowdown during the base delay filter window in which the bottleneck queue is essentially empty. But if a LEDBAT++ flow has a fair share of the BDP that is less than the depth of the queue, then having that flow remove all of its packets from the path, by itself, will not fully drain the bottleneck queue (the packets from the remaining flows that are not in slowdown will be enough to fill the pipe and create a non-zero queue, obscuring the base delay). So AFAICT uncoordinated slow-downs won't drain the queue; then the only approach I can think of to achieve this would be for the flows to coordinate in some fashion to all do a slowdown during overlapping time intervals (as in BBR's PROBE_RTT mechanism). But AFAICT in the design described in the draft, if there are many flows then I did not see a mechanism described in the draft that would achieve this. The IETF 100 LEDBAT++ slides show a multi-flow example, on page 14: https://datatracker.ietf.org/meeting/100/materials/slides-100-iccrg-ledbat-low-priority-tcp-congestion-control-in-windows-01 But that example has just two flows. And two flows is an easy case for this kind of scheme: if there are two flows that are sharing a link equally, then when one of them stops sending then this will almost always drain the queue quite well. Do you have test results you can share with more flows, showing how the slowdown mechanism works for cases with more flows? Or is there a way to add more text in the draft to explain how the slowdown design in LEDBAT++ handles this issue already? (2) The rLEDBAT draft: https://tools.ietf.org/html/draft-bagnulo-iccrg-rledbat-00 mentions: "rLEDBAT estimates the Base RTT (i.e. the RTT when there is no queuing delay) as the minimum observed RTT in the last n minutes." However it doesn't seem to mention a slowdown mechanism to try to refresh the estimate of the base RTT. Does it have such a mechanism? AFAICT rLEDBAT, like LEDBAT++, would need a mechanism to do a coordinated cut in cwnds, like BBR's PROBE_RTT mechanism, if multiple rLEDBAT flows are to all maintain a good estimate of the base RTT of the path. Any thoughts on that question? Apologies if I'm missing something on either of these issues. :-) And thank you both for presenting these respective algorithms. I think both algorithms are important advances, and standardizing something like each of them would be valuable for the community. thanks, neal From nobody Wed Jul 24 07:24:50 2019 Return-Path: X-Original-To: iccrg@ietfa.amsl.com Delivered-To: iccrg@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id F03E21201F8 for ; Wed, 24 Jul 2019 07:24:41 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.897 X-Spam-Level: X-Spam-Status: No, score=-1.897 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_NONE=0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no 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 icX2XEXK-qc0 for ; Wed, 24 Jul 2019 07:24:39 -0700 (PDT) Received: from emh03.mail.saunalahti.fi (emh03.mail.saunalahti.fi [62.142.5.109]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id F218F120131 for ; Wed, 24 Jul 2019 07:24:38 -0700 (PDT) Received: from eggert.org (unknown [62.248.255.8]) by emh03.mail.saunalahti.fi (Postfix) with ESMTP id A3B87400CE for ; Wed, 24 Jul 2019 17:24:36 +0300 (EEST) Received: from dhcp-88b7.meeting.ietf.org (dhcp-88b7.meeting.ietf.org [31.133.136.183]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by eggert.org (Postfix) with ESMTPSA id 2DD5564E012 for ; Wed, 24 Jul 2019 17:24:31 +0300 (EEST) From: Lars Eggert Content-Type: multipart/signed; boundary="Apple-Mail=_58137CB7-735C-43D0-8BC4-00E115613A9F"; protocol="application/pgp-signature"; micalg=pgp-sha512 Mime-Version: 1.0 (Mac OS X Mail 12.4 \(3445.104.11\)) Message-Id: <4E8EC16F-3934-4D33-906D-4CEBBB32ADC9@eggert.org> Date: Wed, 24 Jul 2019 10:24:29 -0400 To: iccrg IRTF list X-MailScanner-ID: 2DD5564E012.A33EF X-MailScanner: Found to be clean X-MailScanner-From: lars@eggert.org Archived-At: Subject: [iccrg] Workshop on Buffer Sizing X-BeenThere: iccrg@irtf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Discussions of Internet Congestion Control Research Group \(ICCRG\)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 24 Jul 2019 14:24:49 -0000 --Apple-Mail=_58137CB7-735C-43D0-8BC4-00E115613A9F Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=us-ascii Hi, wanted to make sure folks were aware of this workshop at Stanford: Workshop on Buffer Sizing http://buffer-workshop.stanford.edu/ Stanford University December 2-3, 2019 Lars --Apple-Mail=_58137CB7-735C-43D0-8BC4-00E115613A9F Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename=signature.asc Content-Type: application/pgp-signature; name=signature.asc Content-Description: Message signed with OpenPGP -----BEGIN PGP SIGNATURE----- iQIzBAEBCgAdFiEEDrrUO3PMwKM8fddaHbmKvSnuNPgFAl04ah0ACgkQHbmKvSnu NPgQgBAAlwLRLyatQnA6vQo2mzmxFkEc7FH8tx+XHCPMXXVWYBvHlX/FONuqjmff fSGyDYLWHaznOIHpzvLb6tXIKoGdZYRr3/ODKMCMBAzvwJIsvANby7hnczK9DnFU P5a5iu2xUHRCi64yLGEhudVwfKPIXqQNSXI/dPziha48VNwuDLPSkuMJCn7JvpU+ GUtx6nJhBtI7sNNwYV7YqbWGlL0mrb0tC6wxcN9k0mreS+0nnxx5vTtxsFNqsaM0 OZHnRQRT0v5Xjf/pqRJkC8Ge3CwUI4tQ1YQFedz5gKHMRIvwfrDpngfDydZf2U1y C3tm7cnDyARgBq4c2FU1mVB3lYMCPV61x1tUwuqnhxoQoh4LQ5vr20pPDmFtQPtN ba1jYp38zxrqc5thTzbcfY/2I/rUUNuxQ75K7Y+inYcscyc7BkFdvmNCTcuO9odz CrODOeCDQPTj+6CKKzosxvmwMwwgSJ3YTHUYkPbeA8cV8ANI+am/auRGj4EhTGDj up/n0qroLYZPv3TjAweKvhp+Hz6AoAyEwvme1VdKca9zBYdo0E6CIg9LlRu1Egvx tqaeGUduHHRVjF7drONNAX1cgvlrLGmE+PqgZZg/2EQR6RRkuhItwXU9mVn0J75r xsZtS01VwUJLmF2rW+xJJpUWT83k/M7isnyC60oDMI1CR8Ag8yY= =pnHl -----END PGP SIGNATURE----- --Apple-Mail=_58137CB7-735C-43D0-8BC4-00E115613A9F-- From nobody Thu Jul 25 22:10:16 2019 Return-Path: X-Original-To: iccrg@ietfa.amsl.com Delivered-To: iccrg@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 7C2C612029A for ; 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Fri, 26 Jul 2019 07:10:08 +0200 Received: from Exch-A2.personal.kau (130.243.19.83) by Exch-A1.personal.kau (130.243.19.82) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.1.1591.10; Fri, 26 Jul 2019 07:10:08 +0200 Received: from Exch-A2.personal.kau ([fe80::d09:7e68:ff95:4a60]) by Exch-A2.personal.kau ([fe80::d09:7e68:ff95:4a60%7]) with mapi id 15.01.1591.017; Fri, 26 Jul 2019 07:09:54 +0200 From: =?iso-8859-1?Q?Anna_Brunstr=F6m?= To: iccrg IRTF list CC: "Markus.Amend@telekom.de" , "Veselin.Rakocevic.1@city.ac.uk" , "Eckard.Bogenfeld@telekom.de" , Andreas Kassler Thread-Topic: MP-DCCP framework for enabling transfer of UDP/IP traffic over multiple data paths in multi-connectivity networks Thread-Index: AdVDbb+WMvdpuR36QpaXntBOMiBudg== Date: Fri, 26 Jul 2019 05:09:54 +0000 Message-ID: Accept-Language: en-US, sv-SE Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [130.243.27.149] Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-Bayes-Prob: 0.9949 (Score 5, tokens from: outbound, outbound-kau-se:default, kau-se:default, base:default, @@RPTN) X-p0f-Info: os=Windows 7 or 8, link=Ethernet or modem X-CanIt-Geo: No geolocation information available for fe80::d09:7e68:ff95:4a60 X-CanItPRO-Stream: outbound-kau-se:outbound (inherits from outbound-kau-se:default, kau-se:default, base:default) X-Canit-Stats-ID: 0a0Fha8rj - e9dd4d74a9c4 - 20190726 X-Antispam-Training-Forget: https://mailfilter.sunet.se/canit/b.php?c=f&i=0a0Fha8rj&m=e9dd4d74a9c4&rlm=outbound-kau-se&t=20190726 X-Antispam-Training-Nonspam: https://mailfilter.sunet.se/canit/b.php?c=n&i=0a0Fha8rj&m=e9dd4d74a9c4&rlm=outbound-kau-se&t=20190726 X-Antispam-Training-Phish: https://mailfilter.sunet.se/canit/b.php?c=p&i=0a0Fha8rj&m=e9dd4d74a9c4&rlm=outbound-kau-se&t=20190726 X-Antispam-Training-Spam: https://mailfilter.sunet.se/canit/b.php?c=s&i=0a0Fha8rj&m=e9dd4d74a9c4&rlm=outbound-kau-se&t=20190726 X-CanIt-Archive-Cluster: PfMRe/vJWMiXwM2YIH5BVExnUnw DKIM-Signature: v=1; a=rsa-sha256; c=relaxed; d=kau.se; h=from:to:cc :subject:date:message-id:content-type:content-transfer-encoding :mime-version; s=canit; bh=DK/o/jWevKLuboBVQwqH860s5hOw03Iiwoigl v2bf4Q=; b=lT2BU/IkRPha6ykFugNnxD0GD5lGzGg3Xfj4AlqTMl6kF92E/6n/h xTS1it6T/v+/uChuwWknIGq05+jmCrmQsAhLD2iNJX9hPwOzwRZsI/fx5tQbRM/+ aRgT1V1Ui9ia+Y8ZFydWCDhuZ0ylz27FwU+TfXP7/sjLABxbkDnBUG9LTFmQHSHU Pc7kC+P+BG4LGXMAEKr+0EFryHkGbTMWPg1m9DXG7JY4O7/niqlPSZ/Ber6b0+W2 4M1vy8OkPzwBHdDYdIlWQy4yQs8LLlllkOKBBVPdRu5r/0AcYpY4OSMdh+yXh17R tjfYSQrTsRzDcZ78JVkP+ZxnT0o/i0uVg== X-Scanned-By: CanIt (www . roaringpenguin . com) Archived-At: Subject: [iccrg] MP-DCCP framework for enabling transfer of UDP/IP traffic over multiple data paths in multi-connectivity networks X-BeenThere: iccrg@irtf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Discussions of Internet Congestion Control Research Group \(ICCRG\)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 26 Jul 2019 05:10:15 -0000 Hi all, There was no time on Tuesday to present any results from our work on a Mult= ipah DCCP framework targeting the transfer of UDP/IP traffic in multi-conne= ctivity networks. If you are still around there will be a short presentatio= n on it at the tsvwg working group in the final session tomorrow. You can also check out the iccrg slides at https://datatracker.ietf.org/mee= ting/105/materials/slides-105-iccrg-multipath-dccp-framework-00 or our pape= r with more detailed results at https://arxiv.org/pdf/1907.04567.pdf. There are also three drafts related to the proposal: https://tools.ietf.org/html/draft-amend-tsvwg-multipath-dccp https://tools.ietf.org/html/draft-amend-tsvwg-multipath-framework-mpdccp https://tools.ietf.org/html/draft-amend-tsvwg-dccp-udp-header-conversion We are happy to receive any comments on the work! Best Regards, Anna From nobody Wed Jul 31 01:40:19 2019 Return-Path: X-Original-To: iccrg@ietfa.amsl.com Delivered-To: iccrg@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 9061312004A for ; Wed, 31 Jul 2019 01:40:17 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.002 X-Spam-Level: X-Spam-Status: No, score=-2.002 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_PASS=-0.001] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (1024-bit key) header.d=ericsson.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 cn-58IJT62Zf for ; Wed, 31 Jul 2019 01:40:15 -0700 (PDT) Received: from EUR01-VE1-obe.outbound.protection.outlook.com (mail-eopbgr140085.outbound.protection.outlook.com [40.107.14.85]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id C3EDA120098 for ; 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There is no contact info on the page. http://buffer-workshop.stanford.edu/cfp/ Sz. -----Original Message----- From: iccrg On Behalf Of Lars Eggert Sent: Wednesday, July 24, 2019 16:24 To: iccrg IRTF list Subject: [iccrg] Workshop on Buffer Sizing Hi, wanted to make sure folks were aware of this workshop at Stanford: Workshop on Buffer Sizing http://buffer-workshop.stanford.edu/ Stanford University December 2-3, 2019 Lars

We wo= uld like to have 15 minutes to present the topic of “An Open Congestion Control Architecture with network cooperation for RDMA fab= ric .” .

&n= bsp;

We wo= uld like to have 15 minutes to present the topic of “An Open Congestion Control Architecture with network cooperation for RDMA fabric .” .

&n= bsp;

We would like to have 15 minutes =C2=A0= to present the topic of =E2=80=9CAn Open Conges= tion Control Architecture with network cooperation for RDMA fabric .=E2=80=9D=C2=A0 .=

=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0