From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ed1-x536.google.com (mail-ed1-x536.google.com [IPv6:2a00:1450:4864:20::536]) (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 9948A3BA8E for ; Fri, 4 Jan 2019 12:52:45 -0500 (EST) Received: by mail-ed1-x536.google.com with SMTP id d39so32457560edb.12 for ; Fri, 04 Jan 2019 09:52:45 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:references:from:message-id:date:user-agent:mime-version :in-reply-to:content-language:content-transfer-encoding; bh=LcBnxRe21vn5+iFfrp22ozSeGs9+IF1F6tW5ncrMRB8=; b=ctB/CmtUnFLjBi31C0HEVs+f9zO3h9MhiClbzQCQlJrNi2VdMB1IZPK0T3aqjMq5n2 7erGstb6e2aaHKIFWj6OKbpWT6nQX6mfpVdTqoTQJZ0W5WoWRCHAyzpz0pD7vNQIGfZn RwdRiqa4B17RCTCqgUfjStmmfdMkagNIwRgQRBdO6p6NyukhQfyg4IIHiZt9fFoLq5R+ NA95HzzcSixTWZWGplVcY3F6pbhLJPwvB197/hz2KzeSf64fo5QTJv65lNz35SpYbSI/ Lu8V1tettZoKFZDNk5Bn8L1o5Ovl7S4nRX0HK6bMKWfngrHPnQntKb3TaFYiVuy5YID+ S0Aw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=LcBnxRe21vn5+iFfrp22ozSeGs9+IF1F6tW5ncrMRB8=; b=CwpNLGpo610T009JQEfYLnPd5u7PX/tzaLNNxg7jc0yHXzDB7/73W7xnzlEXCdow8F Z34E8BlqIqf12wJ5XrO9Ds+EqGXO4fQbKL9bDCVfuP4Rz49LgLC4a7tOXfPYHl975Cb5 9g4sORoSp+UeVJWja+ERBdbtSWYDjURRBfUsTMlur92HRvoP+A6RyYLEsgatx1l6v+qV Ao0LVG3skSn4uhdTZFyzq9iVX49R3T8goVxWA/fgu5v1IlsrVRmXadEQqNEslO3H5FcG FvFN+T4WWj95kZe99KpFQzygQ+9vgP65cO+5MqIUMEdy7DBMbAifTDK1HvqPVT1ITPvj K63w== X-Gm-Message-State: AA+aEWa70h8KdUZ999Y5y6H//J2m+PV3Y6d+SKjLWdVL8KlnumEWkbu/ Wjt9xvBQ9H0evxmzHnleau93pYFM X-Google-Smtp-Source: AFSGD/W8cko1+zsXAN7QPHT7sweoSEz6ZIoUUT+OtplFB9LpqU3i2c9K7sD3KT3/riMBqGwcSo1hIg== X-Received: by 2002:a50:bc12:: with SMTP id j18mr47452359edh.50.1546624364448; Fri, 04 Jan 2019 09:52:44 -0800 (PST) Received: from dracor.xperim.be (234.19-240-81.adsl-dyn.isp.belgacom.be. [81.240.19.234]) by smtp.gmail.com with ESMTPSA id k13-v6sm14112140ejk.50.2019.01.04.09.52.43 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 04 Jan 2019 09:52:43 -0800 (PST) Received: from [192.168.1.184] (bajor.xperim.be [192.168.1.184]) by dracor.xperim.be (Postfix) with ESMTPSA id 62E64382F8E; Fri, 4 Jan 2019 18:52:43 +0100 (CET) To: bloat@lists.bufferbloat.net References: From: Jan Ceuleers Message-ID: <06222342-1cb3-068d-cc85-c5ff4c9a9d06@gmail.com> Date: Fri, 4 Jan 2019 18:52:43 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.2.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Subject: Re: [Bloat] Does VDSL interleaving+FEC help bufferbloat? 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, 04 Jan 2019 17:52:45 -0000 On 04/01/2019 18:10, Dave Taht wrote: > dsl interleave was added primarily to make multicast udp tv streams > work better (as they are very intolerant of packet loss). Often (as in > free's implementation) these streams are "invisible" to the overlying > IP applications. It typically adds at least 6ms of delay to an already > slow technology. > > Do measure unloaded latency with and without it on, it's been a long > time since I fiddled with it.... Interleaving isn't a parameter that mere end-users* can influence - it is part of the line's profile, and that's determined by the network operator. *: you know, the people who pay the bills...