From owner-freebsd-stable@FreeBSD.ORG Tue Jun 27 06:26:14 2006 Return-Path: X-Original-To: freebsd-stable@freebsd.org Delivered-To: freebsd-stable@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 5210D16A400 for ; Tue, 27 Jun 2006 06:26:14 +0000 (UTC) (envelope-from wb@freebie.xs4all.nl) Received: from smtp-vbr16.xs4all.nl (smtp-vbr16.xs4all.nl [194.109.24.36]) by mx1.FreeBSD.org (Postfix) with ESMTP id 47A4443D4C for ; Tue, 27 Jun 2006 06:26:11 +0000 (GMT) (envelope-from wb@freebie.xs4all.nl) Received: from freebie.xs4all.nl (freebie.xs4all.nl [213.84.32.253]) by smtp-vbr16.xs4all.nl (8.13.6/8.13.6) with ESMTP id k5R6Q9jS005283; Tue, 27 Jun 2006 08:26:09 +0200 (CEST) (envelope-from wb@freebie.xs4all.nl) Received: from freebie.xs4all.nl (localhost [127.0.0.1]) by freebie.xs4all.nl (8.13.6/8.13.3) with ESMTP id k5R6Q9PF096558; Tue, 27 Jun 2006 08:26:09 +0200 (CEST) (envelope-from wb@freebie.xs4all.nl) Received: (from wb@localhost) by freebie.xs4all.nl (8.13.6/8.13.6/Submit) id k5R6Q89N096557; Tue, 27 Jun 2006 08:26:08 +0200 (CEST) (envelope-from wb) Date: Tue, 27 Jun 2006 08:26:08 +0200 From: Wilko Bulte To: "M.Hirsch" Message-ID: <20060627062608.GB96454@freebie.xs4all.nl> References: <000001c6996c$3eab9df0$ad0d510a@toshi> <44A05B77.1030200@gmx.de> <20060626221804.GA94278@freebie.xs4all.nl> <44A060C3.8090008@hirsch.it> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <44A060C3.8090008@hirsch.it> User-Agent: Mutt/1.5.11 X-Virus-Scanned: by XS4ALL Virus Scanner Cc: freebsd-stable@freebsd.org Subject: Re: FreeBSD 6.x CVSUP today crashes with zero load ... X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 27 Jun 2006 06:26:14 -0000 On Tue, Jun 27, 2006 at 12:33:39AM +0200, M.Hirsch wrote.. > Wilko Bulte schrieb: > > >You really have never seen a machine used for serious business apparantly. > > > > > > > Depends on what you define "serious business"... > Yes, I am rather new to FreeBSD (2y+) > I am just trying to setup a /stable/ cluster of six machines right now. > For over a week straight. > 4.11 works perfectly. But support is going to be dropped very soon, so > that's a bad option for me right now. > > Over all, the system is /only/ supposed to handle a few hundred hits per > second. (but including dynamic stuff like php...) > > Dunno if that (or what else) is "serious business" for you. > Which version would you suggest for "serious business"? I am not talking about FreeBSD specifically, I am talking about computing in general. > Anyways, my point stands: I rather have any of my nodes panic than > carrying the risk of creating invalid data... > One in a billion can be high probability, soon... (just planning for the > future...) > > >panics like that should be eradicated, adding more nonsensical panics > >is not what we need. > > > uh, I would not call hardware failure "nonsensical panics". I guess I > must have misunderstood you... Panics are there for situations when there is no other way out. Really no other way out. Panicing an ECC-equipped box for a single bit error is nonsense and defeats the whole idea behind ECC. Don;t confuse ECC with parity checking. Please go and read bit on soft bit errors on RAM, can be induced by (cosmic) radiation etc. ECC will correct(!!!!) these single bit errors, and detect multiple bit errors. -- Wilko Bulte wilko@FreeBSD.org