From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from nm30-vm8.bullet.mail.ir2.yahoo.com (nm30-vm8.bullet.mail.ir2.yahoo.com [212.82.97.86]) (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 CC7B33B2A4 for ; Wed, 1 Mar 2017 13:37:44 -0500 (EST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.fr; s=s2048; t=1488393463; bh=WWX1DCuun3rDEWy+okI3KpPNZk9VCpo/e1+J3PXrxbE=; h=Subject:From:To:Date:From:Subject; b=jg+Xm7ksgIBjTz/lEpzfKPDjsfTjVTblo1SfWiZ/umAShEUoi+SN/JOp1g0S+h3yJxKl4XCTUasQvC8xizM015R1GaUhaf9fCL2kIlIMjFuYt/zKNVm6wHcpagSdKfyokS0uoJVsrXMOR5AW9RinCmpjs+RcrOXF7zZoQL4mZm9CVi9qJViI5YOW09jI/oR6u/dhfTwgPgPLHIsFhViN368+s0j5JhJ4sq3anVWWsMLSBZd2HlpjGHkXT2Y5JaWLJnR4Dq/IYLfkTdEP2NWmcX5vqLjC60ptUGpRcsl/D9Kf3jaEfkCsNbkDX+qBAi7mBlMBkhlD29fEw9LwDjCS2g== Received: from [212.82.98.51] by nm30.bullet.mail.ir2.yahoo.com with NNFMP; 01 Mar 2017 18:37:43 -0000 Received: from [46.228.39.90] by tm4.bullet.mail.ir2.yahoo.com with NNFMP; 01 Mar 2017 18:37:43 -0000 Received: from [127.0.0.1] by smtp127.mail.ir2.yahoo.com with NNFMP; 01 Mar 2017 18:37:43 -0000 X-Yahoo-Newman-Id: 257731.73520.bm@smtp127.mail.ir2.yahoo.com X-Yahoo-Newman-Property: ymail-3 X-YMail-OSG: 4ORTDnYVM1mlGcnmzNJ6FI0ZEeI9zNO1sTz2GMaMRNCUsxW Dy1jorkYtWaXDa9gxenKFl.4XT7H0AUL2IrOmWAjRskYgydUgYWd.TTFPkAb 2vKj0rGSA86NBdqq4u1A_Rq2LtgOI6Bb0mNM7Ws9f1XUusCSI03DVG6PAYsE aZqKQUlwiBZbbouXcJrzEx6nrC.iBsHEjTFvpwQow744Y1zZahUDZKw8.Eno IxHQWWVhYzRcWVgNr6i5PfaNJkIe06Ow1v940E9njjNrIGeUp.0HHDlK8GiU SPaJjDnbgB4.qxlALb_TNFr89BCk7xX0bp7XqIMNAGvf5kZTecblxWrBuEJz BeEEPiHJEZ5lA3xfsQrsqyMIrOvEdQ68nPUqkwudoPBMtT41XXBz7fJUyNaS s4Vs03dwwCuDaGtfLQlwrz_ai2xDd_AS8fn7BDKPcorWXdiUXOUVek9ZSSAx rAJQLqTt.Pa7OZ3ZErQfsHnQF_SaLkDfePS9p9G9Xx0RG3p225LHrZ2iCdjP d9wKIJ91auOnE1mlSOozyI7B9FFAFnbZO38QNXT09LvEk_es2LOIlzW3E3Zu anYUYcCcCn2aTv5wlHOHGFf2w X-Yahoo-SMTP: R8REcOaswBA8tpUVQfvLNOMJ0vXRwYHSeLQ- Message-ID: <1488393458.14392.3.camel@yahoo.fr> From: Y To: bloat Date: Thu, 02 Mar 2017 03:37:38 +0900 Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.22.5 (3.22.5-1.fc25) Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: [Bloat] Stab overhead caliculation and mpu for ingress shaping. X-BeenThere: bloat@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: General list for discussing Bufferbloat List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 01 Mar 2017 18:37:45 -0000 Hi , all. I set root qdisc for traffic shaping like this egress $tc qdisc add dev $ext_ingress root handle 1: stab overhead -4 linklayer atm mpu 60 mtu 2048 tsize 256 hfsc default 13 ingress $tc qdisc add dev $ext root handle 1: stab overhead -4 mpu 53 linklayer atm mtu 2048 tsize 256 hfsc default 26 ($ works at script ) PPPoA WAN - modem/router - Ethernet LAN - My pc 1 interface. engress overhead of PPPoA via ethernet is -4 and mpu 53. This is certain. We can think without Ethernet padding at stab. My asking is whether that This is also correct at ingress shaping or not? mpu for ingress in myscript = 60. Because of minimal ethernet packet size = 60( with padding without FCS) oevrhead for ingress in myscript = -4. Because I want to shape connection , so , must set speed setting * 48 / 53. This is certain or not? Yuta. For example. see this section (Extensive framing compensation (for DSL/ATM/PPPoe)) https://www.bufferbloat.net/projects/codel/wiki/Cake/