From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-qt1-x82e.google.com (mail-qt1-x82e.google.com [IPv6:2607:f8b0:4864:20::82e]) (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 0F1273B2A4; Mon, 1 Apr 2019 05:58:49 -0400 (EDT) Received: by mail-qt1-x82e.google.com with SMTP id w5so9727770qtb.11; Mon, 01 Apr 2019 02:58:49 -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=fXXixQedT6I09/3Xsp1E5kmjqaaLX9g79PzIgNSiuWw=; b=cYKEZXl8WW0/f9cwid2m1K7d5iqE/A2JsucsQ0L5CQxeEVhZlMlrFrd1uyLrbmjVCI kktR4fEQghk/HaZ1C82tqdT2wwutuozwGVMp729E0YKp8HD6l+wHCNFuu1dLOvSlXpdv 70pmTRNMeHqnz+uQ3+3H5PjCNZGQ7NfL3tsNP5ejA/uY3f3ikle0bDL2i8toSOmSRDtQ mz4+atLWzgMSKPX9uYi8wViIPcrSq36LOYbo9UzIj6iQCQYXw7HhW9ROj74keotsRnr0 VSbTOxrozHxp/pGWurfVxNHTeLV+T6hycKA4lWIUdEGLcRrbVg66UF3QQw4ICKB7ZA/p DNHg== 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=fXXixQedT6I09/3Xsp1E5kmjqaaLX9g79PzIgNSiuWw=; b=CvWP7V7+FYrPW1ZFRilabsdo+bt8DspIIcV75j0w+UIwJNs7KPPWGpNOjLAEwfyOyR EpVoe8imHgs/A1bgbBdqzIS/fGAdBf8ruGNhT6NHtfIamWMPSC8E6t818g3QCb2hc0Vq a0BPV6s5GHapjwGRhyROFX+JsIom/TQnG4rQXizXawrSI7rKb5Vn2O3Wlch5WHgk4ihY RXolPc3YCvs7O28KVuhQqRSW9/bsxMxYgY/p+kCt2axkU+XbdgItRejjFtLIzrevQjgN W575ulzzNSKyxC7qit+m5RgmjnRVgXonqkrWxxdCJAlQqQSwtl+2d83yXsczCDfrjiTA rimg== X-Gm-Message-State: APjAAAVL+rRmty30uXndp60Xz2pYpjznewOISEBO+2hXJHy8kxQqBadO wmpGTzA7v1iRPhLiyrw69wiY+0eBvJS+L316ET1M4NNZD64= X-Google-Smtp-Source: APXvYqyarycSZTI7XSfutl2MS4PqL7BAGGq5POXf+hB8fqI9BOUTCA8+00AfO52L/PoT8tANDjWffvqtb5Xo7BZMLgY= X-Received: by 2002:a0c:af74:: with SMTP id j49mr4337609qvc.129.1554112728110; Mon, 01 Apr 2019 02:58:48 -0700 (PDT) MIME-Version: 1.0 From: Dave Taht Date: Mon, 1 Apr 2019 11:58:36 +0200 Message-ID: To: ECN-Sane , bloat , BBR Development Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Subject: [Bloat] BBRv2 presentation in ICCRG video X-BeenThere: bloat@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: General list for discussing Bufferbloat List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 01 Apr 2019 09:58:49 -0000 So, it turns out the BBRv2 team was planning on using a l4s-style/dctcp-ish ecn response. The video is up here: https://www.youtube.com/watch?v=3DcJ-0Ti8ZlfE alternatively, here: http://mail.taht.net/~iccrg/IETF104-ICCRG-20190328-1610.webm The Q&A session afterward (about 28 minutes in) showed that the BBRv2 team = were not even testing against fully deployed fq_codel's RFC3168 ecn response and there were all sorts of other fun questions following. So I think this answers Vint "Seersucker"' Cerf's ecn-sane's team's question "is ECN even needed for BBR?" I'm SO glad we got our SCE alternative ready for publication in time to reset the clock by a lot. The preso in tsvwg: https://www.youtube.com/watch?v=3DJQmWyr0JDJM&t=3D1h3m50s Also... Over the last week, jonathan, pete, and rodney (and jason?) also got a modified reno-style transport to respond properly to SCE: https://github.com/dtaht/bufferbloat-rfcs/tree/master/sce/results/prototype= 1 was the first one, the current one is even more excellent. Fun times in the congestion control universe! --=20 Dave T=C3=A4ht CTO, TekLibre, LLC http://www.teklibre.com Tel: 1-831-205-9740