From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <dave.taht@gmail.com>
Received: from mail-qt1-x831.google.com (mail-qt1-x831.google.com
 [IPv6:2607:f8b0:4864:20::831])
 (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits))
 (No client certificate requested)
 by lists.bufferbloat.net (Postfix) with ESMTPS id EE0E83B2A4
 for <ecn-sane@lists.bufferbloat.net>; Thu, 28 Mar 2019 13:09:59 -0400 (EDT)
Received: by mail-qt1-x831.google.com with SMTP id v20so23925558qtv.12
 for <ecn-sane@lists.bufferbloat.net>; Thu, 28 Mar 2019 10:09:59 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025;
 h=mime-version:from:date:message-id:subject:to
 :content-transfer-encoding;
 bh=2Z1sQn0JqOF/oWFo7vES5c2Oz9p8nhJdsP1OLCF61Pw=;
 b=gBWJcVcI6jdJaizFWjUnKkXtGNNI4gSv5aeRxzRAvpP5kjOsW/Ef2hp/NbVh9FL60B
 5aHH4TKs1Voqs4TkpTJOSBbn3yY+vTpky3J5ZJIdclTTQHncrCYmYd2WkxyPCC/1Vep6
 zfyQa2/eIt3AGdNw8Qqhp6bPrAag9tGl5YCBhNkDEzEjZiB8acaYSSk6e4ZHTNry+uv3
 IBwi3HFE2KwzweejFTWtAL8OgPOmw7Lj/wcj+C0D+GL1iVCmLEtqR4MvREoW8z+ob1c0
 6/xI2cqZrAKQ7C5O5yl/Ud5ZNZanwyx0Y3CGihqxoRRVVAEBMzXxXL0GMkTCqMYXoh3o
 cJlg==
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
 :content-transfer-encoding;
 bh=2Z1sQn0JqOF/oWFo7vES5c2Oz9p8nhJdsP1OLCF61Pw=;
 b=UHFhneXWvTPQkcGV+fczRNL4d3zqAiOJXtu9CbbJXVfFIZYqPuIoo7baSOE8LwhqLL
 cPmLsPz18ctpBM+P8qPbQDZ0rLWwN7IvWh6Kmrt8qHgW0hoPgp/ZbfuCAqnVeWcMswuJ
 3w0LINLwOV4h2s5+PxJ//+y9CwaNZ4xgDa1r2KksG3MDW1Ye/5iFo8udrwAVOYxBeGnn
 XOKIjLDtKGwrIgUvxnDeXU/2QdBtTbZUsPBUDr0OAwJ03DRDOPJnzJDbjcOHoPpaaWbf
 fqHQO/E7UEJisH1kz3fnJn6u6mllmbO+rRkLzXVraOLBVfrDGPKdICxYDRPLTA2vCvuB
 3hbQ==
X-Gm-Message-State: APjAAAWlNSQPHfxlpYpO5wfR84CntfnvlCcgBuhoLNBNW7JsJdVFAtEX
 85mp7wYtmX0FybOvimf4DZZIiDJzx/rlPWueiFbF6e5uxhsJpA==
X-Google-Smtp-Source: APXvYqx9uwCef0bI4pG4qpd+SkdW9kM2/LapiNcpcWfs6PZKRCQY0LBD8489SvPu4BTLj7DcJeyyOvPYFNc9Nm6TT+0=
X-Received: by 2002:ac8:3786:: with SMTP id d6mr36466509qtc.328.1553792999236; 
 Thu, 28 Mar 2019 10:09:59 -0700 (PDT)
MIME-Version: 1.0
From: Dave Taht <dave.taht@gmail.com>
Date: Thu, 28 Mar 2019 10:09:48 -0700
Message-ID: <CAA93jw7ME=9E=6Vb++7F1BoEPC_qSsvgNVAzfr8HCOFLS=zQrg@mail.gmail.com>
To: ECN-Sane <ecn-sane@lists.bufferbloat.net>, 
 BBR Development <bbr-dev@googlegroups.com>, iccrg IRTF list <iccrg@irtf.org>
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
Subject: [Ecn-sane] cwnd 4 in BBRv2?
X-BeenThere: ecn-sane@lists.bufferbloat.net
X-Mailman-Version: 2.1.20
Precedence: list
List-Id: Discussion of explicit congestion notification's impact on the
 Internet <ecn-sane.lists.bufferbloat.net>
List-Unsubscribe: <https://lists.bufferbloat.net/options/ecn-sane>,
 <mailto:ecn-sane-request@lists.bufferbloat.net?subject=unsubscribe>
List-Archive: <https://lists.bufferbloat.net/pipermail/ecn-sane>
List-Post: <mailto:ecn-sane@lists.bufferbloat.net>
List-Help: <mailto:ecn-sane-request@lists.bufferbloat.net?subject=help>
List-Subscribe: <https://lists.bufferbloat.net/listinfo/ecn-sane>,
 <mailto:ecn-sane-request@lists.bufferbloat.net?subject=subscribe>
X-List-Received-Date: Thu, 28 Mar 2019 17:10:00 -0000

I just finished watching the sessions in ietf iccrg...

and although I have many questions about BBRv2, I am curious if the
cwnd in it is capped to a minimum of 4, not 2, still? BBRv1 is...

https://github.com/torvalds/linux/blob/master/net/ipv4/tcp_bbr.c#L385



--=20

Dave T=C3=A4ht
CTO, TekLibre, LLC
http://www.teklibre.com
Tel: 1-831-205-9740