From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-io1-xd33.google.com (mail-io1-xd33.google.com [IPv6:2607:f8b0:4864:20::d33]) (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 20E753CB35 for ; Thu, 7 Oct 2021 16:19:28 -0400 (EDT) Received: by mail-io1-xd33.google.com with SMTP id 134so8134429iou.12 for ; Thu, 07 Oct 2021 13:19:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=mime-version:from:date:message-id:subject:to :content-transfer-encoding; bh=M1W/mBrcwnQpm97M4RtrRdQWEla/S5RvCqX9aaFfD/w=; b=Amw3/usnQ5v3ObKIP8zUQVgYam1AzZboogWFlMfBLzJkHNbbeUsb4qGjMsMxkxenF5 ybXo291GIIiU0yd6FcaaQjmZAlFWmHQJMwiBVhMelqXT1XXm/m8/F8QkRMz8A/p2las6 vSf991d+C0T53pd8cfNGB8QZgQV/N24MP2zffdEPt+bEtlPkLKjcPG/6bSL4CT5ouANU PImG+6DEuqmwnbxcWaDz/YZUyhfboLlm6UD5vhuGQF0aUoSB0kKdWFwvXcqXDfUXaS3n Mbwr8c4fuJbwZ+FZqWSAV96ZNWYIi8GHZjsQEhtEDm0qPgof73WPysJIrc8qhFzepWQH ui/w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:from:date:message-id:subject:to :content-transfer-encoding; bh=M1W/mBrcwnQpm97M4RtrRdQWEla/S5RvCqX9aaFfD/w=; b=vOG7Jw39wmpSEU0ev1HhWtlTmFP/gQQOQNlL8WuEbvmOHrhUtLL+JY4MniikJ7Y1+X tmvPDubQzGPsWXVdzNAhEzCo/8KL1zGNJMK18rqwsQk5GnRR0RL6xa1zPcuOP9A6r5S8 KFZoEQXsjkIvR6mcCOKqCLM1YJHh4j9/du5EK3scN5ye3p6H9qdMcHux+YGco4d0r+IE CaYqwtAQ0ghF77uk6B4CiAAdtqFKhXfxCD+FQIXWVx9Vj2azkSScgErYpXWglRRi8U8l baTf0h7nYkcVI8zkqqFop2tLnlgK6dsOcTyRiamkot+1PCS/B3LwBvgKA1XrrK1eSod6 kEAg== X-Gm-Message-State: AOAM533bSXE9T75IkDc+Z3jBBv1mlQk64ngKrbdZg+Yy8Lo4uyuzKosP xdm9c4bme5F/3NqXQeJywirRG9hg7Z8bWU97VkamAI1v X-Google-Smtp-Source: ABdhPJxvNwYcf4fAJE5roaiDjmI+cEhu8pBMo9Hu9oMkaZGzPsxnsWQggRmS2wbHpup/DRk0WpPCMwL9z4mfdz8IJeM= X-Received: by 2002:a05:6638:d43:: with SMTP id d3mr4701688jak.60.1633637967349; Thu, 07 Oct 2021 13:19:27 -0700 (PDT) MIME-Version: 1.0 From: Dave Taht Date: Thu, 7 Oct 2021 13:19:15 -0700 Message-ID: To: Cake List Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Subject: [Cake] slightly negative deficits 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: Thu, 07 Oct 2021 20:19:28 -0000 I have sometimes thought that allowing the deficit to go negative (either one quantum or one mtu) might result in slightly better service times, or tcp, or aqm behavior, given tcp's requirement for two back to back packets to release an ack. similarly, scaling to 2 MTU at higher rates might reduce cpu load. (sch_fq uses 2mtu) --=20 Fixing Starlink's Latencies: https://www.youtube.com/watch?v=3Dc9gLo6Xrwgw Dave T=C3=A4ht CEO, TekLibre, LLC