From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-lj1-x22a.google.com (mail-lj1-x22a.google.com [IPv6:2a00:1450:4864:20::22a]) (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 11A523CB38 for ; Mon, 21 Oct 2024 04:48:50 -0400 (EDT) Received: by mail-lj1-x22a.google.com with SMTP id 38308e7fff4ca-2fabb837ddbso56304091fa.1 for ; Mon, 21 Oct 2024 01:48:49 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=heistp.net; s=google; t=1729500528; x=1730105328; darn=lists.bufferbloat.net; h=mime-version:user-agent:content-transfer-encoding:date:to:from :subject:message-id:from:to:cc:subject:date:message-id:reply-to; bh=FhSanfc0nlyqXv2GKG6SJ4QfNU76W/8yeJKt/HKOslU=; b=X6cTowEeoCYFrmHSZT7a1ICPH7aMB0saHIHUmKH6FFKuq8oDYXX6gm1+CVsTQqlCrs HVg/qKok7MvnLIcd84E062XO/c0bDmQRH1f3DwZTfm0Ud2Up+iscPzKiBK5vfJLUKw9G XVXSChXc8K7zvS5/27zyTf9tKoJvso162q1Ejs40Ygy6wb4O7LLIJ31TBLihtEB/37D2 ARpRJ2BsUkYsQ36cOJ7Bi/wbXoh4kOPMvba7GnWR5mbnQAeDhJ9t2khpl9fd0yt1KfMD 6TE20etfrqOlpoHBirvZAB/F/taV8jeTkq94IEktxHYbKi+tc3C5VDh/YQ1mFKgwu251 R1Kg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1729500528; x=1730105328; h=mime-version:user-agent:content-transfer-encoding:date:to:from :subject:message-id:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=FhSanfc0nlyqXv2GKG6SJ4QfNU76W/8yeJKt/HKOslU=; b=WetlXl2vfEgi1+ic8wiTNO9h/EoJo2tSdkhCqoShaagNyjb5oH1iJUFJYF4HPA0UCV sFYOflFX4tIKuhlbG4KjtNpjMw4M+xQwrbcTbp1T4uyKpvVcOT4b6/kkWnBOUu5L2Gue D0zYwzfv2j8kKTracyJb+5G4eaKibj3Iiks6k3tGrY3D6E/SJmWgyxznTuQ3taQSh7UD J92JA4Cfw8xTCsyN4NeAp8jfpCWZFncfnvc8JWSXv7A6o/cVamDB/G9ePUx2HkoWG2xx 4XwUUUvjIZCrqru09/yBvvy/bemCGcGjZ5OHejf3Kka7imRPr778LDRcpIbz0lhXpGe1 WyDw== X-Gm-Message-State: AOJu0Yy2HaD71yOgkwqBd6eQPwT8dQiNHZycv9K2/9ChdV6YV7ogwYej TRihK4obhfl3YPS4qb5zMuH2RxP1ehdKVqqbHp82NNNM/MTMvVp0HyLDhYWQ6STSv67MGI3cKhe i X-Google-Smtp-Source: AGHT+IGrlMDckDTBvZM0Mq8WDX5OfLREJeZ0c6K5vvkiutPVg8fhW7XhjOZRv1G/Tc2NkrFZNJO7rA== X-Received: by 2002:a2e:460a:0:b0:2fa:c0b5:ac8c with SMTP id 38308e7fff4ca-2fb82eb01efmr55167731fa.21.1729500528203; Mon, 21 Oct 2024 01:48:48 -0700 (PDT) Received: from [10.72.0.88] (h-1169.lbcfree.net. [185.193.85.130]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-a9a91370e49sm177377466b.117.2024.10.21.01.48.47 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 21 Oct 2024 01:48:47 -0700 (PDT) Message-ID: <360d3979f452ceb0d6ebbc352b35213b00e46495.camel@heistp.net> From: Pete Heist To: ecn-sane@lists.bufferbloat.net Date: Mon, 21 Oct 2024 10:48:47 +0200 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.52.4 MIME-Version: 1.0 Subject: [Ecn-sane] Multiplicative Decrease Scaling (high-fidelity ECN in a single queue) X-BeenThere: ecn-sane@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: Discussion of explicit congestion notification's impact on the Internet List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 21 Oct 2024 08:48:50 -0000 Hi all, I'm looking for some feedback on a way to do early and frequent ECN that retains compatibility with conventional CCAs in a single queue. Here's a write-up including simulation results: https://github.com/heistp/md-scaling/blob/main/MD-Scaling.md ----- Abstract: Multiplicative Decrease Scaling (MDS or MD-Scaling) provides high- fidelity Explicit Congestion Notification (ECN) in a way that's compatible with conventional congestion control algorithms (CCAs) in a single queue. Using a signaling and response relationship that allows cwnd convergence with conventional CCAs, MDS aims to reduce queueing delay, and increase utilization for MDS CCAs, while supporting the transition to scalable CCAs. ----- I find the results interesting, and am looking to determine if this idea is worth pursuing further. Any feedback on the approach, proposed signaling mechanism or anything else is welcome. Thanks! Pete Heist PS- I've also posted this to ICCRG in the IRTF, so apologies to anyone getting hit with it twice.