From owner-freebsd-arm@freebsd.org Wed Jul 18 06:06:42 2018 Return-Path: Delivered-To: freebsd-arm@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 78FD01039942 for ; Wed, 18 Jul 2018 06:06:42 +0000 (UTC) (envelope-from fbsd@www.zefox.net) Received: from www.zefox.net (www.zefox.net [50.1.20.27]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "www.zefox.org", Issuer "www.zefox.org" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id DBC218A69C for ; Wed, 18 Jul 2018 06:06:41 +0000 (UTC) (envelope-from fbsd@www.zefox.net) Received: from www.zefox.net (localhost [127.0.0.1]) by www.zefox.net (8.15.2/8.15.2) with ESMTPS id w6I66org025384 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Tue, 17 Jul 2018 23:06:51 -0700 (PDT) (envelope-from fbsd@www.zefox.net) Received: (from fbsd@localhost) by www.zefox.net (8.15.2/8.15.2/Submit) id w6I66oJ5025383; Tue, 17 Jul 2018 23:06:50 -0700 (PDT) (envelope-from fbsd) Date: Tue, 17 Jul 2018 23:06:50 -0700 From: bob prohaska To: freebsd-arm@freebsd.org Subject: Re: RPI3 swap experiments Message-ID: <20180718060650.GA24566@www.zefox.net> References: <20180629155131.GA35717@www.zefox.net> <20180629233937.GC35717@www.zefox.net> <0f137e06-214a-3e8c-a216-f061ec04ac2c@sentry.org> <20180630005145.GA43801@www.zefox.net> <6f3406e2-71f3-d0c2-2b65-703e1a1d3c25@sentry.org> <8e92b2b7-da61-3efb-7231-9fac76b2c1d4@sentry.org> <2deaaec3-f78f-0b09-5ca7-27e14c6979f9@sentry.org> <20180704004554.GA61273@www.zefox.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20180704004554.GA61273@www.zefox.net> User-Agent: Mutt/1.5.24 (2015-08-30) X-BeenThere: freebsd-arm@freebsd.org X-Mailman-Version: 2.1.27 Precedence: list List-Id: "Porting FreeBSD to ARM processors." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 18 Jul 2018 06:06:42 -0000 It appears that some progress has been made in getting swap working reasonably on the RPI3. A -j4 buildworld attempt running r336356 to compile 336431 failed with "out of swap" but the worst read and write delays were less than 5 seconds, a marked improvement over previous examples. In this case swap was split, 2 each 1GB partitions on USB flash plus 1 GB on the microSD card. Previous attempts using 3 each 1 GB partitions on USB flash have been repeatedly successful, while a single attempt using 3 each 1GB partitions on microSD failed. Details are at http://www.zefox.net/~fbsd/rpi3/swaptests/r336356/2gbusbflash_1gbsdflash/ Thanks for reading, bob prohaska