From: Dave Jones <davej@suse.de>
To: Helge Hafting <helgehaf@aitel.hist.no>
Cc: "Pering, Trevor" <trevor.pering@intel.com>, linux-kernel@vger.kernel.org
Subject: Re: [PATCH][2.5.32] CPU frequency and voltage scaling (0/4)
Date: Fri, 30 Aug 2002 13:53:47 +0200 [thread overview]
Message-ID: <20020830135347.A26909@suse.de> (raw)
In-Reply-To: <3D6F2704.A78F0A0@aitel.hist.no>; from helgehaf@aitel.hist.no on Fri, Aug 30, 2002 at 10:04:20AM +0200
On Fri, Aug 30, 2002 at 10:04:20AM +0200, Helge Hafting wrote:
> An MHz carries more meaning - it is a measurable frequency.
It's equally meaningless (in fact, less meaningful).
- By your definition my 900MHz VIA C3 is faster than my 800MHz Athlon.
(Clue: It isn't).
- With trickery like AMD's quantispeed ratings, MHz really is a totally
meaningless number when relating to performance of a CPU.
- A MHz rating is only meaningful across the same vendor/family of CPUs.
Getting cpufreq's policy interface into something CPU agnostic therefore
precludes MHz ratings AFAICS.
Dave
--
| Dave Jones. http://www.codemonkey.org.uk
| SuSE Labs
next prev parent reply other threads:[~2002-08-30 11:49 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-08-29 15:07 [PATCH][2.5.32] CPU frequency and voltage scaling (0/4) Pering, Trevor
2002-08-30 8:04 ` Helge Hafting
2002-08-30 11:53 ` Dave Jones [this message]
2002-08-30 12:36 ` Helge Hafting
2002-08-30 22:43 ` george anzinger
-- strict thread matches above, loose matches on Subject: below --
2002-08-28 20:25 Grover, Andrew
2002-08-28 20:46 ` Linus Torvalds
2002-08-28 11:46 Dominik Brodowski
2002-08-28 18:47 ` Linus Torvalds
2002-08-28 18:48 ` Cort Dougan
2002-08-28 19:25 ` Alan Cox
2002-08-28 19:32 ` Cort Dougan
2002-08-29 10:26 ` Zwane Mwaikambo
2002-08-28 19:41 ` Peter Riocreux
2002-08-28 19:58 ` Linus Torvalds
2002-08-29 9:51 ` Padraig Brady
2002-08-29 10:23 ` Zwane Mwaikambo
2002-08-28 19:21 ` Alan Cox
2002-08-28 19:49 ` Linus Torvalds
2002-08-28 20:25 ` Alan Cox
2002-08-28 20:29 ` Linus Torvalds
2002-08-28 23:26 ` Alan Cox
2002-08-28 23:49 ` Linus Torvalds
2002-08-30 0:39 ` jw schultz
2002-08-29 7:01 ` Dominik Brodowski
2002-08-28 20:39 ` Dominik Brodowski
2002-08-28 21:05 ` Linus Torvalds
2002-09-06 11:31 ` Pavel Machek
2002-08-28 20:27 ` Dominik Brodowski
2002-08-28 20:19 ` Dominik Brodowski
2002-08-28 20:43 ` Linus Torvalds
2002-08-28 20:53 ` Dominik Brodowski
2002-08-28 21:08 ` Linus Torvalds
2002-08-28 23:00 ` george anzinger
2002-08-28 23:30 ` Alan Cox
2002-08-29 0:08 ` Linus Torvalds
2002-08-29 7:07 ` Dominik Brodowski
2002-08-29 10:02 ` Padraig Brady
2002-08-29 10:53 ` Alan Cox
2002-08-29 13:38 ` Dave Jones
2002-08-29 18:47 ` Linus Torvalds
2002-08-29 19:24 ` Alan Cox
2002-08-29 21:22 ` george anzinger
2002-08-30 6:46 ` David Gibson
2002-08-30 7:54 ` Helge Hafting
2002-08-30 3:21 ` David Lang
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