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From: "Michael H. Warfield" <mhw@wittsend.com>
To: "J . A . Magallon" <jamagallon@able.es>
Cc: "Michael H . Warfield" <mhw@wittsend.com>,
	Chris Boot <bootc@worldnet.fr>,
	mirabilos {Thorsten Glaser} <isch@ecce.homeip.net>,
	"L . K ." <lk@aniela.eu.org>,
	"Albert D . Cahalan" <acahalan@cs.uml.edu>,
	"linux-kernel @ vger . kernel . org"
	<linux-kernel@vger.kernel.org>
Subject: Re: temperature standard - global config option?
Date: Fri, 8 Jun 2001 14:56:46 -0400	[thread overview]
Message-ID: <20010608145646.D20944@alcove.wittsend.com> (raw)
In-Reply-To: <20010607212138.B29121@alcove.wittsend.com> <B746D8FA.F994%bootc@worldnet.fr> <20010608140553.C20944@alcove.wittsend.com> <20010608204306.C2768@werewolf.able.es>
In-Reply-To: <20010608204306.C2768@werewolf.able.es>; from jamagallon@able.es on Fri, Jun 08, 2001 at 08:43:06PM +0200

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!


  reply	other threads:[~2001-06-08 18:58 UTC|newest]

Thread overview: 79+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2001-06-06 12:27 temperature standard - global config option? David N. Welton
2001-06-06 13:50 ` Pavel Machek
2001-06-06 16:06   ` Chris Boot
2001-06-06 16:16     ` Peter Svensson
2001-06-06 16:58       ` Bill Pringlemeir
2001-06-06 20:47       ` H. Peter Anvin
2001-06-06 21:40         ` Kipp Cannon
2001-06-06 23:02           ` Maciej Zenczykowski
2001-06-06 23:27             ` David Flynn
2001-06-08 20:04           ` Pavel Machek
     [not found]       ` <9fm4sc@cesium.transmeta.com>
2001-06-08 20:06         ` Pavel Machek
2001-06-06 19:32     ` Matthias Urlichs
2001-06-06 21:45       ` es1371 compile issue in 2.4.5-ac9 Alan Olsen
2001-06-07 15:14         ` Keith Owens
2001-06-07 18:27           ` Alan Olsen
2001-06-06 19:44     ` temperature standard - global config option? José Luis Domingo López
2001-06-07  3:50       ` watermodem
2001-06-06 20:42     ` Pavel Machek
2001-06-06 21:52       ` J . A . Magallon
2001-06-07 10:05         ` Philips
2001-06-07 12:20           ` L. K.
2001-06-07 16:44             ` David Rees
2001-06-07 21:37               ` Chris Boot
2001-06-08  0:03                 ` Albert D. Cahalan
2001-06-08  0:54                   ` Michael H. Warfield
2001-06-07 21:02             ` Albert D. Cahalan
2001-06-07 21:23               ` L. K.
2001-06-07 21:30                 ` mirabilos {Thorsten Glaser}
2001-06-08  1:21                   ` Michael H. Warfield
2001-06-08 11:30                     ` Thomas Speck
2001-06-08 17:33                     ` Chris Boot
2001-06-08 18:05                       ` Michael H. Warfield
2001-06-08 18:43                         ` J . A . Magallon
2001-06-08 18:56                           ` Michael H. Warfield [this message]
2001-06-08 19:00                             ` J . A . Magallon
2001-06-08 21:16                         ` Albert D. Cahalan
2001-06-08 21:22                           ` L. K.
2001-06-08 21:38                             ` Albert D. Cahalan
2001-06-08 21:28                           ` Chris Boot
2001-06-09  7:55                             ` H. Peter Anvin
2001-06-21  7:33                             ` Kai Henningsen
2001-06-21 11:18                               ` Jonathan Morton
2001-06-21 15:39                                 ` Kurt Roeckx
2001-06-08 23:16                           ` Michael H. Warfield
2001-06-08 23:53                             ` John Chris Wren
2001-06-09  3:52                               ` Albert D. Cahalan
2001-06-09  7:58                                 ` H. Peter Anvin
2001-06-09  9:17                                   ` James Sutherland
2001-06-09 15:06                                     ` Charles Cazabon
2001-06-09  0:13                             ` Bill Pringlemeir
2001-06-09 10:11                               ` L. K.
2001-06-09 10:20                                 ` Steffen Persvold
2001-06-09 17:21                                 ` Chris Boot
2001-06-09  5:45                             ` Albert D. Cahalan
2001-06-09  7:57                             ` H. Peter Anvin
2001-06-09  8:00                             ` Albert D. Cahalan
2001-06-09  8:43                               ` H. Peter Anvin
2001-06-08  6:48                   ` L. K.
2001-06-06 14:06 ` john slee
2001-06-06 19:19   ` J . A . Magallon
2001-06-06 19:01 ` Dr. Kelsey Hudson
2001-06-06 19:08 ` Alan Cox
2001-06-06 19:26   ` J . A . Magallon
2001-06-06 21:00     ` Paul Fulghum
2001-06-06 21:01     ` Harald Arnesen
2001-06-06 21:05       ` Alan Cox
2001-06-07 10:43         ` David N. Welton
2001-06-06 20:45   ` Pavel Machek
2001-06-06 21:04     ` Alan Cox
  -- strict thread matches above, loose matches on Subject: below --
2001-06-07 22:10 Chris Adams
2001-06-08 21:33 Leif Sawyer
2001-06-08 23:50 ` Michael H. Warfield
2001-06-09  9:30 ` L. K.
2001-06-21 12:06 Randal, Phil
2001-06-21 12:56 ` Richard B. Johnson
2001-06-21 12:45 Richard J Moore
2001-06-21 16:59 ` Lauri Tischler
2001-06-21 19:14   ` Kai Henningsen
2001-06-21 20:19     ` Lauri Tischler

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