From owner-freebsd-current@FreeBSD.ORG Sun Nov 29 19:30:25 2009 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id BB2061065672; Sun, 29 Nov 2009 19:30:25 +0000 (UTC) (envelope-from kline@thought.org) Received: from aristotle.thought.org (aristotle.thought.org [209.180.213.210]) by mx1.freebsd.org (Postfix) with ESMTP id 690448FC19; Sun, 29 Nov 2009 19:30:25 +0000 (UTC) Received: from thought.org (tao.thought.org [10.47.0.250]) (authenticated bits=0) by aristotle.thought.org (8.14.2/8.14.2) with ESMTP id nATJToH2074601; Sun, 29 Nov 2009 11:29:50 -0800 (PST) (envelope-from kline@thought.org) Received: by thought.org (nbSMTP-1.00) for uid 1002 kline@thought.org; Sun, 29 Nov 2009 11:30:18 -0800 (PST) Date: Sun, 29 Nov 2009 11:30:18 -0800 From: Gary Kline To: Roland Smith Message-ID: <20091129193018.GA87743@thought.org> References: <1259283983.92302.23.camel@neo.cse.buffalo.edu> <20091127030601.CAB2C1CC0E@ptavv.es.net> <20091127055757.GA75657@thought.org> <20091127083304.GA8618@slackbox.xs4all.nl> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20091127083304.GA8618@slackbox.xs4all.nl> User-Agent: Mutt/1.4.2.3i X-Organization: Thought Unlimited. Public service Unix since 1986. X-Of_Interest: With 23 years of service to the Unix community. X-Spam-Status: No, score=-4.4 required=3.6 tests=ALL_TRUSTED,AWL,BAYES_00 autolearn=ham version=3.2.3 X-Spam-Checker-Version: SpamAssassin 3.2.3 (2007-08-08) on aristotle.thought.org X-Mailman-Approved-At: Sun, 29 Nov 2009 21:23:46 +0000 Cc: freebsd-current@freebsd.org, freebsd-stable Subject: Re: 8.0-RELEASE completed... X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 29 Nov 2009 19:30:25 -0000 On Fri, Nov 27, 2009 at 09:33:04AM +0100, Roland Smith wrote: > On Thu, Nov 26, 2009 at 09:57:58PM -0800, Gary Kline wrote: > > > > Altho I am still some time from having my migration from the > > 1998 Kayak -> 2009 Dell done and working, will it be possible > > to upgrade my 32bit 7.2-R, p4 to a 64bit 8.0? > > It is possible, but not easy. Upgrading from 7.x to 8.0 on the same > architecture is not that hard IMHO. Upgrading from i386 to amd64 on the same > release is doable but tricky; you need a spare root partition to install the > amd64 binaries. Combining these two sounds like a big can of worms to me. My > advice would be _not_ to do it. Yes, and for now I'll stick with simply going from v7 to v8--in the 32-bit release... Lots of stuff to get-working PLUS the server migration from ancient to new. ---eventually i'll take a _long_ breath. > > It would be far easier to just install 8.0 on the new machine and migrate your > data and configuration files. You are going to have to build your ports from > scratch anyway, because you're switching to another architecture and another > major release. > > As far as I know, the on-disk filesystem format hasn't changed. (unless your > old machine is still running UFS1. The default now is UFS2) Pretty sure I'm using the default. UFS2. > > There are a couple of differences between 7.x and 8.0; > * The USB stack has been rewritten. I've had to change the following in > /etc/devfs.rules: replace "add path 'usb*' mode 0660 group usb" with "add > path 'usb/*' mode 0660 group usb" Roland, would you please update your webpage? No hurry, but by sometime early in '10. I do rely on others' datapoints. But now tat I'm having to do some real work in this migration, it's time to learn about some things I've let slide. { One far, far OT question here: who can explain what dovecot is/does? why it even exists? I'm familiar with MTA's, like sendmail; likewise with MUA's, like evo, kmail, and mutt. It's time to learn another level of complexity, evidently....} > * The name of the tty devices has changed in /etc/ttys; ttydN -> ttyuN > (impacts /etc/ttys) What impact is this likely to have on my server? The more ttys we've got, the better, for a term/xterm/ like me. But because I've only used my Kayak as a server, I don't think I touched much in tty-land. *But* I probably will. I can't see just letting a heavy-duty dual-core suck up so many kilowats. --Okay, I'll get off the soapbox now:) > * There have been a lot of changes in the kernel configuration. If you want a > custom kernel, start anew from the 8.0 GENERIC kernel so you don't miss > anything. Could somebody who's running a 32biter send a GENERIC from 8.0 so I can diff? > * A lot of changes as well in /etc/src.conf (the file that defines which parts > of the system are built from source) > * Network cards show up in dmesg and ifconfig, but not as devices in /dev (but > that could be a configuration error on my part.) > Sorry, you left me in the dust with "/etc.src.conf". I though the entire system was built from source. Examples, please? > > Since you're switching to another CPU, things like cache size will have a > major inpact. WRT single versus multi cores, my impression has been that the > individual cores in a multi-core intel CPU are somewhat slower that the core > of a similarly clocked single-core CPU. (based on some informal testing I've > done with povray). If your workloads are capable of running on multiple cores > (e.g. make jobs, different programs running concurrently) there will be a > significant speed increase. > > You only _need_ amd64 if you are running out of address space on the i386 > architecture. Having said that, I've been running amd64 on my desktop since > 5.3-RELEASE more or less because I can, and it has worked fine ever since. Be > aware though that there are a few (most binary) ports that do not work on > amd64. You can see that in the port Makefiles by looking for things like > NOT_FOR_ARCHS and ONLY_FOR_ARCHS. For whatever I do, 32 bits has been fine. I spend virtually my entire bg working in the 64bit world, which used to be: supercomputer-level processing. > > HTH, Yup; this has been a serious help; you it will robably keep me from stepping in it [[ a mine-field ]] when I move to 8.0 or 8.1 next year. gary > > Roland > -- > R.F.Smith http://www.xs4all.nl/~rsmith/ > [plain text _non-HTML_ PGP/GnuPG encrypted/signed email much appreciated] > pgp: 1A2B 477F 9970 BA3C 2914 B7CE 1277 EFB0 C321 A725 (KeyID: C321A725) -- Gary Kline kline@thought.org http://www.thought.org Public Service Unix http://jottings.thought.org http://transfinite.thought.org The 7.31a release of Jottings: http://jottings.thought.org/index.php