From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pf1-x42f.google.com (mail-pf1-x42f.google.com [IPv6:2607:f8b0:4864:20::42f]) (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 3C8163B29E for ; Sun, 25 Jun 2023 14:51:17 -0400 (EDT) Received: by mail-pf1-x42f.google.com with SMTP id d2e1a72fcca58-6687446eaccso2392662b3a.3 for ; Sun, 25 Jun 2023 11:51:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=networkplumber-org.20221208.gappssmtp.com; s=20221208; t=1687719076; x=1690311076; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:subject:cc:to:from:date:from:to:cc:subject:date :message-id:reply-to; bh=eDqs/Pz5ctzgHShurE8704vyV2DAetgY0Abxfma/X6Y=; b=NcxAZGBBcfpq3jLxSk5DJgNXKUIBRBxYn//227XaSL4WEz8VOsg06X9HRFVI0txFhe DgTyJKQBolNS8hjJCgw8Vks2adzAGApA+mFry3UO0ywr1Mo6RxN5vVY5o6Jg07ny7cHs IxuMiCp7CRgNmwEhqUGZBkCgEkDiIYFVbD/K376XUpdEWQnOnlNSUEv7Z54kr6G9YgDJ zoIaAhObyX79zdJ8j77nStM+wYf2etklb+cR5yMsnngT40wYgNbcxCxiYVxwm1K6kwn7 t8nvMWw/IgvB6ayemnhcBAeX0u0EfR/u8pr33MYxvskmXS+v3USt9QdrW72CNBFMA/z6 Ge9w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1687719076; x=1690311076; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:subject:cc:to:from:date:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=eDqs/Pz5ctzgHShurE8704vyV2DAetgY0Abxfma/X6Y=; b=C7Dhtgz9dii18khX/nqm9RY0dRZd2NIw7MJrWiyAolTXcZmKgIhhrh1igOpFhrNZWu q4AR7zo8MQIZrdy2/Dx2UO9qsUnLC6Zf2IIz0Za8nLbeFTxf+AUyddRcJbwU/SIq1JRs 1siRd9H7wVPyvW2e7Fcb7n65FZNR3Nr5X7DwHZFZnD1HSmTAFs8U9rNHBywiZuT+Zz2X DU0k0y5HE2OK+jB/8frd3WAmnUTXTvP24wbxZNw2PPKUXNkkCsNDcjgmYVRFoHGSoiEm xL6PGO7PS+CrZ+cfMR7qjfr84JaLT6iqrVPnGX0ASJ0MsMhC9a5Rf3wF54ls1qPeoWD3 MELg== X-Gm-Message-State: AC+VfDyXx0ihkNFQ0t9YfE3NtG3BW4m5YbubHyGNif3JpWS0nu/cpAJA KuccK0N/AHbhNox6bEao/MqF8wXgU5y6BEY1Iwokig== X-Google-Smtp-Source: ACHHUZ6VOKtNoD4F+PHTofKIrVqlBsRlDN+1JgbIAfc55zmWIPine4GlGtiUbPpxFvjxS3yXVB8Now== X-Received: by 2002:a05:6a21:6d86:b0:124:413a:56d2 with SMTP id wl6-20020a056a216d8600b00124413a56d2mr13602979pzb.43.1687719076041; Sun, 25 Jun 2023 11:51:16 -0700 (PDT) Received: from hermes.local (204-195-120-218.wavecable.com. [204.195.120.218]) by smtp.gmail.com with ESMTPSA id n189-20020a6327c6000000b0055387ffef10sm2795136pgn.24.2023.06.25.11.51.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 25 Jun 2023 11:51:15 -0700 (PDT) Date: Sun, 25 Jun 2023 11:51:13 -0700 From: Stephen Hemminger To: "David P. Reed via Bloat" Cc: "David P. Reed" , "Cake List" Message-ID: <20230625115113.2291f7d6@hermes.local> In-Reply-To: <1687632112.01524513@apps.rackspace.com> References: <1687632112.01524513@apps.rackspace.com> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Subject: Re: [Cake] [Bloat] Two questions re high speed congestion management and datagram protocols X-BeenThere: cake@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: Cake - FQ_codel the next generation List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 25 Jun 2023 18:51:17 -0000 On Sat, 24 Jun 2023 14:41:52 -0400 (EDT) "David P. Reed via Bloat" wrote: > I also was looking back to DCCP as a useful way to get a UDP that handled congestion without engaging the higher layers, and preserving the other flexibility of UDP. DCCP never got widely used, and Linux is on the path of deprecating it.