From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-lf0-x230.google.com (mail-lf0-x230.google.com [IPv6:2a00:1450:4010:c07::230]) (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 E40B83BA8E for ; Tue, 3 Jul 2018 05:18:40 -0400 (EDT) Received: by mail-lf0-x230.google.com with SMTP id u14-v6so1029671lfu.0 for ; Tue, 03 Jul 2018 02:18:40 -0700 (PDT) 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=E7yYhNUKKLCLHNNCyTacGZMZz3JnxsNjjmDcjw3M798=; b=fVHVUTWlLtHYR4eQCOP4c78Yn8VKzypgzOvY28wx1oIjgapXQCCreJOLWk29mdGi3A Xr5glw5dS2HNnO3cPAb1gBBJU3qYAZAnm5LyOQQZ+HNSrQrjghrJbnsa06WiU08w4Dta ox5mP7VRv67VDe1+EbAvyzKVgmarQ8Hi+yvIEKRjBD/R1nzLGKNS26Y2ijQWzwdn6t8c jLEMhQPTrXg8KXLB/bIoTlQxsbaAQM2/qUgJZuI8gP/NeaSxH5QDErgsCyDrOjdGsNWu KKFj/cTYmdrz54d/Rn8qOMP0R3vJiXuTLgP3v1tuzGN7nvk/cqh+vv0NRrzfHXCvjUjO RvsA== 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=E7yYhNUKKLCLHNNCyTacGZMZz3JnxsNjjmDcjw3M798=; b=RkxL+/NqTkM1d6H1NeFjufuqVyjy3b4yVVsz/ptDCVoK+7Ee1VQoWIaV5fu/01qtct 1h7dCsTr7RbbsWn6qUpuI5bUF0zlI02prba2/3NeUeGbbZcRt5NFDoXwgnINvyrml+o5 Fo1XuDy1WQ+Z4pNRUdutupH8K2dWHD5opHOzcvScUz/G/BXt+w1IQ5CZ53epXOKOrRS4 brFn6MhHVHyEgbVXjsHgAYGbr5rbnXkigfmF1zasi7OCItsjSDd+XY3MfDgsh/Z0iL8T FRIxuI2NLLUncfGcc+K9SGH0Rjqwsy49pzNglGKwzTgUHGsdSvfWWj7Cus3QyvDKGQJh p8Ow== X-Gm-Message-State: APt69E2anLfg6u0exCGqGIYeTxCC74z6zbFsCjpCccCt8hyBni6VvJfR pjqCojznTDPKAbggQYG0Zok= X-Google-Smtp-Source: AAOMgpefJRb6GPaVC8AG7nE/q6D6L4Yfa6NwCq9SBCZZgDpVfAz/POV65/d5imePO16MNvmdgDDqSA== X-Received: by 2002:a19:5418:: with SMTP id i24-v6mr14832404lfb.34.1530609519902; Tue, 03 Jul 2018 02:18:39 -0700 (PDT) Received: from [192.168.239.102] (83-245-232-101-nat-p.elisa-mobile.fi. [83.245.232.101]) by smtp.gmail.com with ESMTPSA id y5-v6sm158014lfc.58.2018.07.03.02.18.38 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 03 Jul 2018 02:18:39 -0700 (PDT) Content-Type: text/plain; charset=utf-8 Mime-Version: 1.0 (Mac OS X Mail 11.4 \(3445.8.2\)) From: Jonathan Morton In-Reply-To: <48ECB6C8-5D22-4785-A6CE-696D87EC5496@toke.dk> Date: Tue, 3 Jul 2018 12:18:33 +0300 Cc: Georgios Amanakis , Cake List Content-Transfer-Encoding: quoted-printable Message-Id: <73DD74AD-C2E7-4A12-AE49-C06D4486660E@gmail.com> References: <94C9790F-E9BC-4D59-9845-17C305E4B910@darbyshire-bryant.me.uk> <17AF79A0-0213-44E3-95B9-62795A644A47@heistp.net> <87lgatj13k.fsf@toke.dk> <87fu11ipir.fsf@toke.dk> <871scligay.fsf@toke.dk> <2AE036E5-BD3D-4176-9476-9EC824EC1D18@darbyshire-bryant.me.uk> <87r2klh1fz.fsf@toke.dk> <87lgath01v.fsf@toke.dk> <52B2B44D-4382-404C-8F6D-03F12A72B11F@heistp.net> <31667353-48F2-4FAB-AC05-163680451719@toke.dk> <48ECB6C8-5D22-4785-A6CE-696D87EC5496@toke.dk> To: =?utf-8?Q?Toke_H=C3=B8iland-J=C3=B8rgensen?= X-Mailer: Apple Mail (2.3445.8.2) Subject: Re: [Cake] cake at 60gbit 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: Tue, 03 Jul 2018 09:18:41 -0000 > On 3 Jul, 2018, at 1:23 am, Toke H=C3=B8iland-J=C3=B8rgensen = wrote: >=20 > My hunch is that this has something to do with the way mlx5 uses = multiple receive queues (and thus multiple CPUs). Which is probably = different from veth... At this stage I'm pretty confident it has nothing to do with Cake, and = everything to do with the Mellanox hardware and driver. It does strike = me that Linux' default handling of multiqueue hardware doesn't map very = well to the qdisc interface. - Jonathan Morton