From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Fri, 8 Jun 2001 14:58:32 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Fri, 8 Jun 2001 14:58:21 -0400 Received: from alcove.wittsend.com ([130.205.0.20]:15508 "EHLO alcove.wittsend.com") by vger.kernel.org with ESMTP id ; Fri, 8 Jun 2001 14:58:06 -0400 Date: Fri, 8 Jun 2001 14:56:46 -0400 From: "Michael H. Warfield" To: "J . A . Magallon" Cc: "Michael H . Warfield" , Chris Boot , mirabilos {Thorsten Glaser} , "L . K ." , "Albert D . Cahalan" , "linux-kernel @ vger . kernel . org" Subject: Re: temperature standard - global config option? Message-ID: <20010608145646.D20944@alcove.wittsend.com> Mail-Followup-To: "J . A . Magallon" , "Michael H . Warfield" , Chris Boot , mirabilos {Thorsten Glaser} , "L . K ." , "Albert D . Cahalan" , "linux-kernel @ vger . kernel . org" In-Reply-To: <20010607212138.B29121@alcove.wittsend.com> <20010608140553.C20944@alcove.wittsend.com> <20010608204306.C2768@werewolf.able.es> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.3.2i In-Reply-To: <20010608204306.C2768@werewolf.able.es>; from jamagallon@able.es on Fri, Jun 08, 2001 at 08:43:06PM +0200 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Jun 08, 2001 at 08:43:06PM +0200, J . A . Magallon wrote: > On 06.08 Michael H. Warfield wrote: > > Actually, the REAL point I was TRYING to make (and doing a really > > shabby job of it) is that some of this needs a little dose of reality. > > We don't have sensors that are accurate to 1/10 of a K and certainly not > > to 1/100 of a K. Knowing the CPU temperature "precise" to .01 K when > > the accuracy of the best sensor we are likely to see is no better than > > +- 1 K is just about as relevant as negative absolute temperatures. > Lets see, somebody can develop lab equipment (dont think on PTRs or > thermistors in common world) that givee 10e-3 precission, and you are just > making linux not suitable to control that hardware. Think open. > What is the real difference between managing temperatures with a short > or a long ?. Is it really needed to fit it in a short ??!!! > I would use an unsigned long with fixed point and all done. No, we are not talking lab instrumentation here. We are talking about CPU monitoring. Lab instrumentation is a whole different issue with things like the IEEE bus and such. Lab instrumentation would require it's own drivers and interface. > -- > J.A. Magallon # Let the source be with you... > mailto:jamagallon@able.es > Linux Mandrake release 8.1 (Cooker) for i586 > Linux werewolf 2.4.5-ac9 #1 SMP Wed Jun 6 09:57:46 CEST 2001 i686 Mike -- Michael H. Warfield | (770) 985-6132 | mhw@WittsEnd.com (The Mad Wizard) | (678) 463-0932 | http://www.wittsend.com/mhw/ NIC whois: MHW9 | An optimist believes we live in the best of all PGP Key: 0xDF1DD471 | possible worlds. A pessimist is sure of it!