From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-lf1-x133.google.com (mail-lf1-x133.google.com [IPv6:2a00:1450:4864:20::133]) (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 94EC93B29D for ; Thu, 28 Sep 2023 07:44:58 -0400 (EDT) Received: by mail-lf1-x133.google.com with SMTP id 2adb3069b0e04-503056c8195so21231330e87.1 for ; Thu, 28 Sep 2023 04:44:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1695901497; x=1696506297; darn=lists.bufferbloat.net; h=to:references:message-id:content-transfer-encoding:cc:date :in-reply-to:from:subject:mime-version:from:to:cc:subject:date :message-id:reply-to; bh=doibEFsOm9IA11RCdyXM8CKtsDb8IDtzIcLlao1HRAg=; b=BsmjkEAEXM96eZVl2k2woKzWhQd2vt7wABCdP0dkduxFTsBHyTQ7IkP+PZ+Jq1BIQZ zamqyq7y8ooBg7zDZlPLJKuvJztuxKTSz0UhizSBiCLFH9fVew6puUQ1art9HyZ7eLe3 m2OM1haPNtqlommMEceaonwCOjqszG382w+1vm9T8miG0VCrIFK4gA0gOQ4SPm1K6Ec/ uKiTycRE+PD+iHWvKPNILnM6u7GGPXkvMO6a+M3dEAU5yDxW8QGbPv+OcNm18GuTvlaI 5gbUWYBDk+70jDisK8zjpkZqGVm6PufpLK2xDHPvHTQE9jgN6M203tgmPMMQ4m93aKtW uIpg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1695901497; x=1696506297; h=to:references:message-id:content-transfer-encoding:cc:date :in-reply-to:from:subject:mime-version:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=doibEFsOm9IA11RCdyXM8CKtsDb8IDtzIcLlao1HRAg=; b=JG7y94YJT9vbWIS+hb45a8Pg/wy/sIZfpzovohObxzB0jVRg7+6h2bdGO92tdD1jZU r6rOb7x6gealp4LBzYRa9FkZBebehoy5N6zeadNdGfKHvpt5etV0dxWaZ2MVslW/1258 MyqJQufj4wfTOS3XUAeeuxi11i6mA+18qlsz/kKUkXkfaTXgkLvls9N2GlV35uDjJzFM 2gWP8grHsMi+20p5rb83cXmXFJtW56Jb9YHJGqsZBT0KQFUU7HtELg2UVLmWQtWAVSIq 5uLqm5d8Q9+vZ4nv9kbcYc1fpDBzJ5nO4gIHhbiUwITdvKVYomZjGvG9ysH3cCqNiv60 D++Q== X-Gm-Message-State: AOJu0YxX/R3md7oq/H4VWejFdwB873tshJlRoKEV9K/TzJ0cccIMyBMQ nK7lOJyKkBWjMIy/ZZh+VCs= X-Google-Smtp-Source: AGHT+IGeOi/91qUmVxh4MBEzpQzu6//e0s+ev3IFztROn2b2K0ZoMUjLv/P32ccneqFzLHWyXDk2fA== X-Received: by 2002:a19:5f08:0:b0:503:654:cf27 with SMTP id t8-20020a195f08000000b005030654cf27mr733251lfb.28.1695901496752; Thu, 28 Sep 2023 04:44:56 -0700 (PDT) Received: from smtpclient.apple (188-67-146-233.bb.dnainternet.fi. [188.67.146.233]) by smtp.gmail.com with ESMTPSA id t12-20020ac243ac000000b004fdba93b92asm3051118lfl.252.2023.09.28.04.44.56 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Thu, 28 Sep 2023 04:44:56 -0700 (PDT) Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (Mac OS X Mail 14.0 \(3654.100.0.2.22\)) From: Jonathan Morton X-Priority: 3 (Normal) In-Reply-To: Date: Thu, 28 Sep 2023 14:44:53 +0300 Cc: dave seddon , Cake List Content-Transfer-Encoding: quoted-printable Message-Id: <6D098714-69DC-41D9-A7DC-E94FD9C77625@gmail.com> References: <1695068690.78066946@apps.rackspace.com> To: "David P. Reed" X-Mailer: Apple Mail (2.3654.100.0.2.22) Subject: Re: [Cake] some comprehensive arm64 w/cake results 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: Thu, 28 Sep 2023 11:44:58 -0000 > On 19 Sep, 2023, at 1:07 am, Jonathan Morton = wrote: >=20 >> Raspberry Pi 4's just aren't very good at networking because of their = I/O architecture on the board, just as they are slow at USB in general. = That's why the CM4 is interesting. It's interesting that the PiHole has = gotten so popular - it would run better on an Pi with a better network = architecture. >=20 > On the contrary, the Pi 4 has an excellent I/O architecture compared = to most of its peers, and especially compared to the previous Pis. The = built-in NIC is internal to the SoC and *NOT* attached via USB any more, = so it can genuinely support gigabit speeds. The USB interface is also = fast enough to support a second GigE NIC, though the latency wouldn't be = as good as one attached over PCIe. That's with a standard, = off-the-shelf Pi 4B. Timely breaking news: the Raspberry Pi 5 has just been announced. The important new feature here (for us) is that it exposes a PCIe bus = lane on the standard model, so you don't have to mess around with the = Compute Module just to get access to that. The built-in Ethernet port = is now implemented in a PCIe-attached "southbridge" chip, and the WiFi = performance has been improved by accelerating the interface by which the = radio is attached. On the downside, the price has gone up. - Jonathan Morton=