From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.toke.dk (mail.toke.dk [52.28.52.200]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.bufferbloat.net (Postfix) with ESMTPS id B4CF53CB35 for ; Mon, 31 Dec 2018 15:39:43 -0500 (EST) From: Toke =?utf-8?Q?H=C3=B8iland-J=C3=B8rgensen?= DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=toke.dk; s=20161023; t=1546288782; bh=/PjiZ3NPudqcMYC4lmAiFDcLIcwFn4CbbqrgQSQbGjM=; h=From:To:Subject:In-Reply-To:References:Date:From; b=HzJEwb2rh1/Wz07PzYnVypESuZmql1MdMYdttIiv04LyqtkOvphzXlZl5EhUTfHnh wivzc21QTK6KhgKp52g2NtLqDuUm6mYcVueXMTiP3FgSKVK8HjmsI/mzo1xjVckNsm 7Qa/FhakJxPwBXSP7qTmv3Su9BXldCYApp3DiiMS1a/cfJl4khiSmQxX6243mIpVBw Cs752ooOzxNonN8z/yf1L/bM6QQIpC5JeJvngPs4I8AXDAIEoL42V8SJRkTpRMiazc 3GXRgf7mJBDmoKnQMtWgT9ZsvAAy0jAT8tHfqg6mxBlHx9NpznGMrz002QdTfZpgOb oPB6FYZ8UlwGQ== To: Dev , bloat@lists.bufferbloat.net In-Reply-To: References: Date: Mon, 31 Dec 2018 21:39:40 +0100 X-Clacks-Overhead: GNU Terry Pratchett Message-ID: <875zv9fn1v.fsf@toke.dk> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Subject: Re: [Bloat] link saturation test failing 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: Mon, 31 Dec 2018 20:39:43 -0000 Dev writes: > I=E2=80=99m running Debian Buster, trying to saturate a link, enable fq_c= odel > and drop my ping times back down, but they seem to stay high. > > I connected machine A and B to a gig switch, then dropped the port > speed on machine A like: > > ethtool -s enp8s0 advertise 0x002 >From which machine are you running the test? If your bottleneck is the switch, that is where the buffering will happen; FQ-CoDel on the host can do nothing about that... -Toke