From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from cassarossa.samfundet.no (cassarossa.samfundet.no [IPv6:2001:67c:29f4::29]) (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 CE66F3B25E for ; Fri, 21 Oct 2016 04:47:28 -0400 (EDT) Received: from pannekake.samfundet.no ([2001:67c:29f4::50] ident=unknown) by cassarossa.samfundet.no with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.84_2) (envelope-from ) id 1bxVU6-0004iW-8z for bloat@lists.bufferbloat.net; Fri, 21 Oct 2016 10:47:26 +0200 Received: from sesse by pannekake.samfundet.no with local (Exim 4.84_2) (envelope-from ) id 1bxVU6-0003Zu-6a for bloat@lists.bufferbloat.net; Fri, 21 Oct 2016 10:47:26 +0200 Date: Fri, 21 Oct 2016 10:47:26 +0200 From: "Steinar H. Gunderson" To: bloat Message-ID: <20161021084726.GA1913@sesse.net> References: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: X-Operating-System: Linux 4.9.0-rc1 on a x86_64 User-Agent: Mutt/1.5.23 (2014-03-12) Subject: Re: [Bloat] "BBR" TCP patches submitted to linux kernel 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: Fri, 21 Oct 2016 08:47:29 -0000 On Fri, Sep 16, 2016 at 02:04:37PM -0700, Dave Taht wrote: > I'm really looking forward to trying them out and reading the upcoming paper. > > https://patchwork.ozlabs.org/patch/671069/ As a random data point, I tried a single flow from my main server in .no to my backup server in .nl and compared CUBIC (with sch_fq) to BBR (naturally also in sch_fq) on the sender side. The results were quite consistent across runs: - BBR ramped up much quicker than CUBIC. - BBR gave ~10% higher max speed than CUBIC (~680 Mbit/sec on a gigabit link). - CUBIC wavered a bit up and down (~100 Mbit/sec) from the max; BBR stayed put (perhaps 2 Mbit/sec difference) the entire time. http://pastebin.com/0XQaJvD9 for a typical log. I don't have any fancy graphs, sorry :-) /* Steinar */ -- Homepage: https://www.sesse.net/