From owner-freebsd-arch@freebsd.org Wed Jan 29 21:11:50 2020 Return-Path: Delivered-To: freebsd-arch@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 7368F1FED8A; Wed, 29 Jan 2020 21:11:50 +0000 (UTC) (envelope-from phk@critter.freebsd.dk) Received: from phk.freebsd.dk (phk.freebsd.dk [130.225.244.222]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 487GPx22T5z4C8F; Wed, 29 Jan 2020 21:11:48 +0000 (UTC) (envelope-from phk@critter.freebsd.dk) Received: from critter.freebsd.dk (v-critter.freebsd.dk [192.168.55.3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by phk.freebsd.dk (Postfix) with ESMTPS id CD9BA1AF101; Wed, 29 Jan 2020 21:11:40 +0000 (UTC) Received: from critter.freebsd.dk (localhost [127.0.0.1]) by critter.freebsd.dk (8.15.2/8.15.2) with ESMTPS id 00TLBeFW078427 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NO); Wed, 29 Jan 2020 21:11:40 GMT (envelope-from phk@critter.freebsd.dk) Received: (from phk@localhost) by critter.freebsd.dk (8.15.2/8.15.2/Submit) id 00TLBcgZ078426; Wed, 29 Jan 2020 21:11:38 GMT (envelope-from phk) To: Paul Mather cc: Robert Clausecker , freebsd-arm , freebsd-arch Subject: Re: arm64 as Tier 1 for FreeBSD 13 In-reply-to: From: "Poul-Henning Kamp" References: <17938.1575444597@critter.freebsd.dk> <20191204092402.GA82492@fuz.su> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-ID: <78424.1580332298.1@critter.freebsd.dk> Content-Transfer-Encoding: quoted-printable Date: Wed, 29 Jan 2020 21:11:38 +0000 Message-ID: <78425.1580332298@critter.freebsd.dk> X-Rspamd-Queue-Id: 487GPx22T5z4C8F X-Spamd-Bar: - Authentication-Results: mx1.freebsd.org; dkim=none; dmarc=none; spf=pass (mx1.freebsd.org: domain of phk@critter.freebsd.dk designates 130.225.244.222 as permitted sender) smtp.mailfrom=phk@critter.freebsd.dk X-Spamd-Result: default: False [-1.46 / 15.00]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-0.91)[-0.914,0]; FROM_HAS_DN(0.00)[]; RCPT_COUNT_THREE(0.00)[4]; R_SPF_ALLOW(-0.20)[+mx]; NEURAL_HAM_LONG(-0.59)[-0.589,0]; MIME_GOOD(-0.10)[text/plain]; DMARC_NA(0.00)[freebsd.dk]; RCVD_COUNT_THREE(0.00)[3]; TO_MATCH_ENVRCPT_SOME(0.00)[]; TO_DN_ALL(0.00)[]; IP_SCORE(0.04)[ip: (0.06), ipnet: 130.225.0.0/16(0.07), asn: 1835(0.08), country: EU(-0.01)]; FORGED_SENDER(0.30)[phk@phk.freebsd.dk,phk@critter.freebsd.dk]; R_DKIM_NA(0.00)[]; MIME_TRACE(0.00)[0:+]; ASN(0.00)[asn:1835, ipnet:130.225.0.0/16, country:EU]; FROM_NEQ_ENVFROM(0.00)[phk@phk.freebsd.dk,phk@critter.freebsd.dk]; RCVD_TLS_ALL(0.00)[] X-BeenThere: freebsd-arch@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Discussion related to FreeBSD architecture List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 29 Jan 2020 21:11:50 -0000 -------- In message , Paul= Mather writes: >On Dec 4, 2019, at 4:24 AM, Robert Clausecker wrote: > >> On Wed, Dec 04, 2019 at 07:29:57AM +0000, Poul-Henning Kamp wrote: >>> In message , Ed Maste writes: >> >> Indeed. For example, on a Raspberry Pi 3B, it takes multiple days to >> build world as the build must be done single threaded due to a lack of >> RAM (building LLVM is the worst offender here). I plugged in a "WD SSD Passport" USB disk, it supports BIO_DELETE and performs so much better than a SD card, that swapon(8) is a good idea. I will also repeat again: We ignore the RPi4 at our peril. RPi's are a LOT easier to get hold of for hackers and in particular for educators. We may not want to use them ourselves, but we should keep that part of the on-ramp open, in particular for young people. -- = Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe = Never attribute to malice what can adequately be explained by incompetence= .