From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-qk0-x232.google.com (mail-qk0-x232.google.com [IPv6:2607:f8b0:400d:c09::232]) (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 A7B593B25E for ; Thu, 27 Oct 2016 13:33:38 -0400 (EDT) Received: by mail-qk0-x232.google.com with SMTP id z190so55515328qkc.2 for ; Thu, 27 Oct 2016 10:33:38 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc:content-transfer-encoding; bh=iG070XMQx8b+mK6kKW6Epn5+UdQYEFIyZ1Cue5PXPsA=; b=GsuBPDuNwbWOlUIA9iik+t0VQ0HUIE+scqmncJzQ7eBQIqk1I88204sOzoeus0fe24 bBRwD6RCB1CUac6jI9TuCLyHnlAbzQfMHKEtobsnkXYXePxwHaMx+POIwyY4md52t9Kj eZxttxZzJfg/I83Wb0vIBRP+hC2FFaX50SwI53rjfbQGEGNVxFlJGWtKH1ixCCguOWHM 40/aETTNoT9mo6U+AlB4uhszjuIK/ieQiZnlxRIRKHDB/o3Y/5lHYdfIM5EhUJSJuqLb RtXvh3lMQvwvnJY0EQ+wMWgETLMYhoLPlLSbmdNkBlCehn1bhS2HP9XQKhJffR70OlLI LmOg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to:cc:content-transfer-encoding; bh=iG070XMQx8b+mK6kKW6Epn5+UdQYEFIyZ1Cue5PXPsA=; b=R07livkaC5iYO55VAzb5ExLAWvvx1bfrNVcL0K9nbPGQj9OIIwSlQWpD/VSLdXXnCQ +ybaSnFMN4rf9MvtFw0/pEvpJdnt/8+wxFuiB8CLhHmuYjMRpcrrE91iVTLAzVBOvIYf +jmFoJxKXFkukeT0Xyi32zwNHPyjChEzY/n+kAbn0SAUfryAKGJ2veetcFkKSpcNCmwo YL/p2HXkJ1BcXZc0LxWcIZ4w7iuxgctaFkzQH08O0q5V16rM8sZ0M92KAMh6MfhKfwwm KFoJy1AcBi1ghfAnwk24VWUGzt5F7/Zc9Vy1iM+FG5sr01ZwP/IIo8yiDKyaKPOMYWGm PyyA== X-Gm-Message-State: ABUngvdtHQkZs3hhvng3Y7PzWVOd+AGcTey3f0/shnXQMuiQPf5D5GoWpAgCBNvEtS92AUAQdLwSwXGBW3aHLg== X-Received: by 10.55.72.209 with SMTP id v200mr6784732qka.262.1477589618114; Thu, 27 Oct 2016 10:33:38 -0700 (PDT) MIME-Version: 1.0 Received: by 10.12.146.164 with HTTP; Thu, 27 Oct 2016 10:33:37 -0700 (PDT) In-Reply-To: <20161027170447.GA28383@sesse.net> References: <20161021084726.GA1913@sesse.net> <20161027170447.GA28383@sesse.net> From: Dave Taht Date: Thu, 27 Oct 2016 10:33:37 -0700 Message-ID: To: "Steinar H. Gunderson" Cc: bloat Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable 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: Thu, 27 Oct 2016 17:33:38 -0000 On Thu, Oct 27, 2016 at 10:04 AM, Steinar H. Gunderson wrote: > On Fri, Oct 21, 2016 at 10:47:26AM +0200, Steinar H. Gunderson wrote: >> 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 (natu= rally >> also in sch_fq) on the sender side. The results were quite consistent ac= ross >> runs: > > Another datapoint: A friend of mine had a different, worse path (of about= 40 ms) > and tested with iperf. > > CUBIC delivered 20.1 Mbit/sec (highly varying). BBR delivered 485 Mbit/se= c. I mostly live in a world (wifi) where loss is uncommon, unless forced on it with a AQM. At the moment my biggest beef with BBR is that it ignores ECN entirely (and yet negotiates it). BBR is then so efficient at using up all the pipe that a single queued aqm "marks madly" and everything else eventually starves. Watch "ping" fade out here... http://blog.cerowrt.org/flent/bbr-comprehensive/bbr_ecn_eventually_starving= _ping.png somewhat conversely in fq_codel, this means that it ignores codel's marking attempts entirely and BBR retains it's own dynamics, (while the non-BBR flows are fine) which is kind of neat to watch. > /* Steinar */ > -- > Homepage: https://www.sesse.net/ > _______________________________________________ > Bloat mailing list > Bloat@lists.bufferbloat.net > https://lists.bufferbloat.net/listinfo/bloat --=20 Dave T=C3=A4ht Let's go make home routers and wifi faster! With better software! http://blog.cerowrt.org