From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-io1-xd2c.google.com (mail-io1-xd2c.google.com [IPv6:2607:f8b0:4864:20::d2c]) (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 6C87E3CB46 for ; Tue, 6 Jul 2021 22:10:57 -0400 (EDT) Received: by mail-io1-xd2c.google.com with SMTP id b15so1119092iow.4 for ; Tue, 06 Jul 2021 19:10:57 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc:content-transfer-encoding; bh=6CCxZ1YpnS46u6dyzIzHczbpRJvE4coRw0ykGTb5YpA=; b=rbSVqOiJNZllNzf6Rd0g8kIT1VAfaJrbLR7soSmCHPuu1aeOpn+NQUo+30n+3eukbZ a3rgR12j/2BvmjkXn4bnmFFPzBDCJI72Yoz0BTUshjZ4r5lN4xSE1tDj8bFvwd27Lx7d 1ymWcb4a8Ld9CL8nvjFt44RgWbZiCwdh93m0hbbcv36c1UJ5pcaLSZ3xewQqRjX6uxn1 7dbV94pMDxDTCosvZbLZV4cC3HKrQrwLN5LzFOBfe3CS0QHG3VZiRLP/nPoVHrJXtGVW pjNJPVMeNh3dv3BlPoxuHTrprIQTsgeigBNRqBdB5dli4HyM7mwyy8cQYdAzDSVPVwHV aAvw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc:content-transfer-encoding; bh=6CCxZ1YpnS46u6dyzIzHczbpRJvE4coRw0ykGTb5YpA=; b=H4OVXNQ+glQY+rCrabqwZehUEXm1715NyaSOSU54aI+rCeNjPO8UinjfiCkpKzyopI hS8mq7RKu0MoGUKDnyAINoPOYx3uERjtfhMIromVn3iF7ZMxJlXCO0Gjri8lxUoZIjhL W/U1CuJNnPId8MXy5MjhXsZup10qS9oTaFw0VFlpC3rLKTp7AF7qeA9PJ/OprC43etPu 7MHla5hFrap/I717Ez8dfdPws6zEQOyPc3LD/lRMaHGab89Mn7wZClVYcza3V4QpQgQ1 0a3VZanUulcPnnW7RUmQa9CIJmPlYPUtx7A2Rf2l3SybsKLIKdy32RBWeW8zqieH6FA/ LXMg== X-Gm-Message-State: AOAM533u86QWOxmrrY5g8B+MEUIHqrZd1Hu0L7hXOCRz5Tr9KEZwreMR LrzoPx3nvl48y9qGtLGXgmwyp1gmdqpGXgMTneY= X-Google-Smtp-Source: ABdhPJzHItEX8ZAaIsePMDPDdALkjiUGfGIm5sV5H73poWnyciq6TXoIuqLsarFrPFyeqXvGi6SrgXn0zbV4j1HFaIo= X-Received: by 2002:a6b:b5ce:: with SMTP id e197mr2612807iof.123.1625623856846; Tue, 06 Jul 2021 19:10:56 -0700 (PDT) MIME-Version: 1.0 References: <20210621210048.628befdb@hermes.local> <38CC4C4D-AE42-4629-8472-16BCC0DEAFEA@gmx.de> <383273DA-3700-469D-9FE2-524C9D21C4DA@cable.comcast.com> In-Reply-To: From: Dave Taht Date: Tue, 6 Jul 2021 19:10:44 -0700 Message-ID: To: "Wheelock, Ian" Cc: "Livingood, Jason" , Aaron Wood , "bloat@lists.bufferbloat.net" Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Subject: Re: [Bloat] Really getting 1G out of ISP? 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: Wed, 07 Jul 2021 02:10:57 -0000 On Tue, Jul 6, 2021 at 3:28 PM Wheelock, Ian w= rote: > > The support for AQM (PIE) is mandatory in D3.1 modems regardless of the U= S mode in use (ie sc-qam (3.0) or ofdma (3.1) upstream), so it should be en= abled. I am under the distinct impression it is only on for ISP provided modems for at least one ISP. > Get Outlook for Android > > ________________________________ > From: Bloat on behalf of Aaron Wood= > Sent: Tuesday, July 6, 2021 11:13:59 PM > To: Livingood, Jason > Cc: bloat@lists.bufferbloat.net > Subject: Re: [Bloat] Really getting 1G out of ISP? > > Are these in-flux changes to where the upstream split is why some modems = report DOCSIS 3.1 downstream, but only 3.0 upstream? (and therefore aren't= enabling AQM on the upstream?) > > -Aaron > > On Tue, Jun 22, 2021 at 4:04 PM Livingood, Jason via Bloat wrote: > > > For DOCSIS the issue seems to be an unfortunate frequency split between= up and downstream and use of lower efficiency coding schemes. > > Performance really takes a big step forward once a person has a D3.1 mode= m in their home, bringing OFDM and OFDMA as key advancements. Also in flux = at the moment is where the upstream split is in cable networks, which are m= oving to mid-split or high-split designs that bring more upstream bandwidth= . As well, over the past 18+ months, most cable networks have added substan= tially more upstream channels as well as performed quite a number of fiber = node splits. And that is just below the physical layer stuff - there's also= a lot of work at the software layer for modems and CMTSes that is quite in= teresting. > > JL > > _______________________________________________ > Bloat mailing list > Bloat@lists.bufferbloat.net > https://lists.bufferbloat.net/listinfo/bloat > > _______________________________________________ > Bloat mailing list > Bloat@lists.bufferbloat.net > https://lists.bufferbloat.net/listinfo/bloat --=20 Latest Podcast: https://www.linkedin.com/feed/update/urn:li:activity:6791014284936785920/ Dave T=C3=A4ht CTO, TekLibre, LLC