From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-lf0-x233.google.com (mail-lf0-x233.google.com [IPv6:2a00:1450:4010:c07::233]) (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 7FF3A3B2A4 for ; Sun, 7 Jan 2018 10:21:48 -0500 (EST) Received: by mail-lf0-x233.google.com with SMTP id u84so9680816lff.7 for ; Sun, 07 Jan 2018 07:21:48 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:subject:from:in-reply-to:date:cc :content-transfer-encoding:message-id:references:to; bh=wU1fBJ2gcKdufrC8CsI6RDCdOJ7pVlQABf+hOpdhm34=; b=iPL/ITfqWZ0mblzoN9FK2aySKApFLs7+xmdWoAu4xrjBjG1q7lplOa3Spv+JQVdQEV K06Iyy8C+rREpo2kOf4UEe7YPAiuiJ6EyOfbwbwyqUH8nyAcGNaPCN9K4YG9gJa7Z32b v+XaxkmyNzi27ZAzlBpVzJF7Fn6LBIcPqhLVgUb56qZbXWk8vktq08aLbGJrI01jNBDo aZE6I2vsBXQTFMQ7983k+mapE6HE0U/cKH5ccFqy+Pxc0Ntxel0OQq4kndzoEQrJRX2B /K+YmAABNHmsCvDZLA4Vl0zXTE5sjcOuHs1eiO3+75Uw9Hkxc2mGdEFNRHlZo3ugWGoo Ql9w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:subject:from:in-reply-to:date:cc :content-transfer-encoding:message-id:references:to; bh=wU1fBJ2gcKdufrC8CsI6RDCdOJ7pVlQABf+hOpdhm34=; b=rrR5ju4urfaNsFR/qJoSMCZv5c3inUJIKL5Z5ab9fT6H2MFZS1uFeXPw7GSTLxlrJe 6y3Wa16RyQidm7caF5STpUkOOplY9Jtn8+GSpvvi576Xm7fz8e2U/YIMY+QjfCJxGX5s olnPGS10+5YHh3rEhA3rCgn/4lA/Lwz0IJnykqHxZAZaaiaOez3nYQL503b3oI0N1RsW DmTfMChY1LWvBZkw6zTfrhDHrqtpQ0i5cJV5mW/n0syuNDLC3vILH9i1fVP4FpYzBVA4 C1tcYIjl3oDQW5aS9b1rGi669A4hD/2V7UvHDQfBuysF+QQq4Ou8ufiGX/cDJ+8uQQzC nP0w== X-Gm-Message-State: AKwxytc3Ziq9/nt1Y0pk2qdvZpCkPTYY4N2xvII+Y/2DBwENu6OfkZHB P8XOB5imPSJeHWn17bSDXvQ= X-Google-Smtp-Source: ACJfBou0UD4iGyc1DHHDgKGS4pU3WFU6UuGct83M6r4ncJ8tTE0nR2+y8WmNr/PeRmZs2A1TwbxcOw== X-Received: by 10.25.40.4 with SMTP id o4mr4089839lfo.130.1515338507069; Sun, 07 Jan 2018 07:21:47 -0800 (PST) Received: from [192.168.239.216] (mobile-access-bceee7-52.dhcp.inet.fi. [188.238.231.52]) by smtp.gmail.com with ESMTPSA id z18sm1809263lfj.47.2018.01.07.07.21.45 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sun, 07 Jan 2018 07:21:46 -0800 (PST) Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (Mac OS X Mail 11.2 \(3445.5.20\)) From: Jonathan Morton In-Reply-To: Date: Sun, 7 Jan 2018 17:21:44 +0200 Cc: Ryan Mounce , Cake List Content-Transfer-Encoding: quoted-printable Message-Id: References: <31d49a5d-02a2-3dc8-a455-52d453b83bdf@gmail.com> <3b255661-1b16-cc29-958f-bbbedbcbab9e@gmail.com> <8FB76CCB-1AAB-42F6-AEF8-D0D8A438EA91@gmx.de> <7ca86dce-7645-38e8-df4e-148245e9991c@gmail.com> <3B4D3F22-DA08-4A8A-A1E2-C31A2B627727@gmx.de> <7416D2DC-A95B-40EA-B7AB-000BF9D113F8@gmx.de> <202188C4-062D-430B-838B-EAFEDB394002@gmail.com> To: Sebastian Moeller X-Mailer: Apple Mail (2.3445.5.20) Subject: Re: [Cake] overheads or rate calculation changed? 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, 07 Jan 2018 15:21:48 -0000 > On 7 Jan, 2018, at 10:19 am, Sebastian Moeller = wrote: >=20 > We really need this "behave like all other qdiscs" mode so that cake = can be used with "tc stab" exactly as awkward as all other qdiscs, it = would be really unfortunate if cake would require different "tc stab" = magic than say HTB+fq_codel. Okay, that's a valid use-case for not molesting the packet size at all. = I'll have to think about how best to interface that to userspace. >> If you then specify "overhead 34", you'll get exactly that, relative = to the transport-layer packet (that is, IP). >=20 > That is the best thing to do agreed, but from your description above I = am not sure about the exact conditions you propose to do that. It'll be what you get in all cases, *unless* you specifically invoke the = stab-compatible behaviour. - Jonathan Morton