From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wr1-x435.google.com (mail-wr1-x435.google.com [IPv6:2a00:1450:4864:20::435]) (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 E0AF13B2A4 for ; Tue, 1 Nov 2022 16:15:41 -0400 (EDT) Received: by mail-wr1-x435.google.com with SMTP id o4so21675299wrq.6 for ; Tue, 01 Nov 2022 13:15:41 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:from:to:cc:subject:date:message-id:reply-to; bh=C7mnFlWkftVc+AC15SEtfiEvu1ePfHtPH7LFzTmKMyw=; b=GGTSiaIuIk2YbezijtIG834YCuDugv1PeZ7SpTZMt+blNds4EFoz5YAWtgT0ntA4pf f4iy+PGdS+g4s9PJ9JN8gGDgvne19AEaSCaGHgh3LsVHO9owAOqmCrf36JEGOwZ50e5p 4LSg0tOmr79wMhERCxZoVxtVRc/vTVH+AB+XoBaicUOTJhyPmi/8r9ehpFUC4m/7p7fx wVPoJcUI15pWSfGT3oJkVyrGfIcLtwVed+KuhPlkqLD/PFifvb1HRdaHR0uJ4wOHGU6+ NRIFwzRFRczl7PRc1bqHtQ+Z4PfqCP5DbAOgu5jJ7shUji8uNj3Jyosa4ma9IM6jyguL Oymw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=C7mnFlWkftVc+AC15SEtfiEvu1ePfHtPH7LFzTmKMyw=; b=NahdBBFptPWMce2kRXzIcXJTWT3aTjp5EKqqbKfs2PBew5vNZzfy3ci5C0xtY5SM9P IycX+A8AhxldGbdSdQ/DTJwVfmyVEJmXkhE0q4x8Wfl1ZUk475vOUe3ItmnKa0Ttvjsw 3YvIpEtagdaCeZf8bEMQR3CuhEEaL9bn2ISkRBv47Vi/0Z/6iMFy69IbEDsNmW4E4Guk BsTLwyjp/eUhEkh4XKkBGQR4wSBlil++Gvu48mmVhH6ptFax7oliNzgscJI5OYa2rxZD sF0yXnHOkKTKvMiOrUmY2Tg8KAEXQg7rB25AtFMELHaDpk5+Q3lx1Q57yHXhd2HGr7Wk K9JQ== X-Gm-Message-State: ACrzQf2zuSKhYlHYZ6KJJraSXO33aihEDbEgyN2zhtfm3CpQe65EDnOs 7b41VZ4adh0zcYso7VQ69JV5vvYDx9aZcwzaV9Y= X-Google-Smtp-Source: AMsMyM76l3QPdJ40/tDLp+ziTz8Z6maHxW4GIG1hmxm8SFLK0CMG7H/UzlzyWg1zYGMjYKO1eRuAtBnweD+z0QUYZyY= X-Received: by 2002:adf:f242:0:b0:236:68ef:e76e with SMTP id b2-20020adff242000000b0023668efe76emr13079392wrp.482.1667333740695; Tue, 01 Nov 2022 13:15:40 -0700 (PDT) MIME-Version: 1.0 References: <0a8cc31c7077918bf84fddf9db50db02@rjmcmahon.com> In-Reply-To: From: Dave Taht Date: Tue, 1 Nov 2022 13:15:29 -0700 Message-ID: To: "MORTON JR., AL" Cc: rjmcmahon , Rpm , "ippm@ietf.org" Content-Type: text/plain; charset="UTF-8" Subject: [Rpm] lightweight active sensing of bandwidth and buffering X-BeenThere: rpm@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: revolutions per minute - a new metric for measuring responsiveness List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 01 Nov 2022 20:15:42 -0000 For about 2 years now the cake w-adaptive bandwidth project has been exploring techniques to lightweightedly sense bandwidth and buffering problems. One of my favorites was their discovery that ICMP type 13 got them working OWD from millions of ipv4 devices! They've also explored leveraging ntp and multiple other methods, and have scripts available that do a good job of compensating for 5g and starlink's misbehaviors. They've also pioneered a whole bunch of new graphing techniques, which I do wish were used more than single number summaries especially in analyzing the behaviors of new metrics like rpm, samknows, ookla, and RFC9097 - to see what is being missed. There are thousands of posts about this research topic, a new post on OWD just went by here. https://forum.openwrt.org/t/cake-w-adaptive-bandwidth/135379/793 and of course, I love flent's enormous graphing toolset for simulating and analyzing complex network behaviors.