From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-qk0-x22c.google.com (mail-qk0-x22c.google.com [IPv6:2607:f8b0:400d:c09::22c]) (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 C2CB43CB3B for ; Mon, 12 Feb 2018 09:34:08 -0500 (EST) Received: by mail-qk0-x22c.google.com with SMTP id g129so4025549qkb.13 for ; Mon, 12 Feb 2018 06:34:08 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:sender:in-reply-to:references:from:date:message-id :subject:to:cc; bh=CVCY6oCGn60nDGrgQk8Msymu7eLlo940wouI9ntE+38=; b=Vi00kgoiUweL9gPf6FelJw1IijxcdcTItglElBiwPoAKUDdY8QGxmx9PmAFS5EAbYf bsiC+vxCmn6om8Tw7EJHEFpOmsk57PnY+yNhmz+VbXDwGF7Gsc7LON6/4XCVHveXEQs2 bZivh95Zu3wBVsAFLCWfn+WO2PVC0FqYj/sZlM5+OpzH3wQPsM1wVhJAIUztv1ZTD/VC whq0D7zvHRRqd3FG5zMOLzJyAI2x+F/mEbCvVfr3mmBn3KfMOZYFbuR/hYNfh3+oUbJ9 LSbkfJQwx6W5Tll+AS4o3oIZJfQOkCDjMg37cYi0WfVTs0QYoMY4zxbzCBbuKQdGKrvl wS7g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:sender:in-reply-to:references:from :date:message-id:subject:to:cc; bh=CVCY6oCGn60nDGrgQk8Msymu7eLlo940wouI9ntE+38=; b=W1FOCx3bospEAGFq3ubUrDQJZRzhVduGP22d4f9a4RzqnLtAiKsfRDxvqDC7HG1Q/m Xj3qHqmXofWV3AcO6KzDfGfKFg+/EZyOnu2UnwIuGQuXZegCr82AiWczu7bW4b8KyLjQ 63TnSxpc5BV9KS2I+rENozEMpsGnN2rJFkO3TvaTdAsXhF1GSh4mNKqrZMnijbb6Y6Oi G+ASWwMRDiHhhsv51/ugoZoHrcQQk7r2PmI85cg2iW3x8C3yjNO3LxxkqM/h30wkTdUA OKp0F6242FJiGJLtnJC30arZGktc6/QV1y3E7I0EphrarGAe0LPAxbB2CgDNAhd7KSa0 n4ag== X-Gm-Message-State: APf1xPCJJiawvr66F5I1IpWZEfvNAMi7fx7mmZI4AnhTa84bWJPzag4Z GlM5zcnWMnkkR9EqlCECqQFxpmiLZHJ3/meKDJ8= X-Google-Smtp-Source: AH8x2265HAeMucB88j/MtkjxOKSJlKHf11Dlkka+uJbE6ZO+X8eHsXirRUf96PeGbJmePg6L2JHRgAxGAXt5HMarmU8= X-Received: by 10.55.219.1 with SMTP id e1mr18444522qki.151.1518446048105; Mon, 12 Feb 2018 06:34:08 -0800 (PST) MIME-Version: 1.0 Sender: gettysjim@gmail.com Received: by 10.12.168.232 with HTTP; Mon, 12 Feb 2018 06:34:07 -0800 (PST) In-Reply-To: References: From: Jim Gettys Date: Mon, 12 Feb 2018 09:34:07 -0500 X-Google-Sender-Auth: kOvLAYYwg9231oJYZdPogZ8K2kY Message-ID: To: Jonathan Morton Cc: Bruno George Moraes , bloat Content-Type: multipart/alternative; boundary="f403043ae95c4ee9d9056504c563" Subject: Re: [Bloat] Curious case of local "Fiber" 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, 12 Feb 2018 14:34:08 -0000 --f403043ae95c4ee9d9056504c563 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Mon, Feb 12, 2018 at 8:56 AM, Jonathan Morton wrote: > > On 22 Jan, 2018, at 10:07 pm, Bruno George Moraes > wrote: > > > > My NIC is configured to only 1/1 buffers, then MTU 1492 (increased of > default 1480), PPoE login with Windows 10 using CUBIC. > > I didn't know Windows supported CUBIC. The default AFAIK is Compound TCP= , > if it isn't NewReno. > > In any case, it looks like the bottleneck isn't at your NIC (so your > settings don't matter), but at the router terminating the fibre for the > whole building. That's the best place to mitigate the bloat, since it > would work for the whole building's uplinks. > =E2=80=8BNote, as always, you should locate your bottleneck. WiFi is also highly suspect; you have terrible bloat in the upload direction, which is probably typical for a WiFi bottleneck from a device/laptop. - Jim =E2=80=8B > > - Jonathan Morton > > _______________________________________________ > Bloat mailing list > Bloat@lists.bufferbloat.net > https://lists.bufferbloat.net/listinfo/bloat > --f403043ae95c4ee9d9056504c563 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable

On Mon, Fe= b 12, 2018 at 8:56 AM, Jonathan Morton <chromatix99@gmail.com><= /span> wrote:
> On 22= Jan, 2018, at 10:07 pm, Bruno George Moraes <brunogm0@gmail.com> wrote:
>
> My NIC is configured to only 1/1 buffers, then MTU 1492 (increased of = default 1480), PPoE login=C2=A0 with Windows 10 using CUBIC.

I didn't know Windows supported CUBIC.=C2=A0 The default AFAIK i= s Compound TCP, if it isn't NewReno.

In any case, it looks like the bottleneck isn't at your NIC (so your se= ttings don't matter), but at the router terminating the fibre for the w= hole building.=C2=A0 That's the best place to mitigate the bloat, since= it would work for the whole building's uplinks.
<= br>
=E2=80=8BNo= te, as always, you should locate your bottleneck.

WiFi is also highly suspect; you have terrible blo= at in the upload direction, which is probably typical for a WiFi bottleneck= from a device/laptop.
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0- Jim

=E2=80=8B

=C2=A0- Jonathan Morton

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