From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from vs19.mail.saunalahti.fi (vs19.mail.saunalahti.fi [62.142.117.200]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.bufferbloat.net (Postfix) with ESMTPS id 9D6183B25E for ; Sat, 17 Sep 2016 14:25:34 -0400 (EDT) Received: from vams (localhost [127.0.0.1]) by vs19.mail.saunalahti.fi (Postfix) with SMTP id 3DAB520173 for ; Sat, 17 Sep 2016 21:25:33 +0300 (EEST) Received: from gw02.mail.saunalahti.fi (gw02.mail.saunalahti.fi [195.197.172.116]) by vs19.mail.saunalahti.fi (Postfix) with ESMTP id 2353D20173 for ; Sat, 17 Sep 2016 21:25:33 +0300 (EEST) Received: from radio2 (dsl-jnsbrasgw2-58c076-229.dhcp.inet.fi [88.192.118.229]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by gw02.mail.saunalahti.fi (Postfix) with ESMTPSA id 1CCE14002D for ; Sat, 17 Sep 2016 21:25:32 +0300 (EEST) Received: from ebirdie by radio2 with local (Exim 4.84_2) (envelope-from ) id 1blKHo-0007Km-SB for cerowrt-devel@lists.bufferbloat.net; Sat, 17 Sep 2016 21:24:24 +0300 Date: Sat, 17 Sep 2016 21:24:24 +0300 From: Erkki Lintunen To: "cerowrt-devel@lists.bufferbloat.net" Message-ID: <20160917182424.GA28071@radio2.ebirdie> Mail-Followup-To: "cerowrt-devel@lists.bufferbloat.net" MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.23 (2014-03-12) Subject: [Cerowrt-devel] BBR congestion control X-BeenThere: cerowrt-devel@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: Development issues regarding the cerowrt test router project List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 17 Sep 2016 18:25:34 -0000 This may already be yesterday news to list subscribers, but may there be still be others like me missing this fascinating new entry, I'm for rescue. > While it is impossible to disambiguate any single bandwidth or RTT > measurement, a connection's behavior over time tells a clearer > story. BBR uses a measurement strategy designed to resolve this > ambiguity. It combines these measurements with a robust servo loop > using recent control systems advances to implement a distributed > congestion control algorithm that reacts to actual congestion, not > packet loss or transient queue delay, and is designed to converge with > high probability to a point near the optimal operating point. Got the bit from Steinar H. Gunderson's blog, , where before he has shared his troubles with bufferbloat while delivering video streams from big events of young hackers.