From: Albert Cahalan <albert@users.sf.net>
To: linux-kernel mailing list <linux-kernel@vger.kernel.org>
Cc: alan@lxorguk.ukuu.org.uk
Subject: Re: High pitched noise from laptop: processor.c in linux 2.6
Date: 17 Oct 2004 01:21:15 -0400 [thread overview]
Message-ID: <1097990475.2673.14262.camel@cube> (raw)
Alan Cox writes:
> On Sad, 2004-10-16 at 20:52, Lee Revell wrote:
>> [Pavel Machek]
>>> What benefits? HZ=1000 takes 1W more on my system.
>>
>> Better timer resolution?
>
> And heavily reduced accuracy on a lot of laptops
> where 1000Hz is enough to make the clock slide
> every time the battery state is queried or an SMM
> event triggers.
How low is low enough for nearly all of these laptops?
Some decent choices:
wrongness_% HZ_diff PIT_# HZ actual_HZ
-0.00083809 -0.003051 3278 364 363.996949
-0.00016762 -0.000483 4143 288 287.999517
-0.00016762 -0.000724 2762 432 431.999276
-0.00016762 -0.001448 1381 864 863.998552
+0.00008381 +0.000304 3287 363 363.000304
+0.00008381 +0.000435 2299 519 519.000435
+0.00008381 +0.000525 1903 627 627.000525
next reply other threads:[~2004-10-17 5:28 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-10-17 5:21 Albert Cahalan [this message]
-- strict thread matches above, loose matches on Subject: below --
2004-10-18 3:51 High pitched noise from laptop: processor.c in linux 2.6 Yu, Luming
2004-10-18 11:41 ` Pavel Machek
2004-10-20 14:47 ` Måns Rullgård
2004-10-20 15:47 ` Pavel Machek
2004-10-20 16:37 ` Måns Rullgård
2004-10-20 16:49 ` Jan-Benedict Glaw
2004-10-20 16:53 ` Pavel Machek
2004-10-20 16:53 ` Lee Revell
2004-10-20 17:13 ` Måns Rullgård
2004-10-21 20:32 ` Lee Revell
2004-10-21 21:39 ` Jon Masters
2004-10-20 23:31 ` Giuseppe Bilotta
2004-10-07 9:30 Fraz
2004-10-07 10:32 ` Pavel Machek
2004-10-07 10:53 ` Måns Rullgård
2004-10-07 14:32 ` Pavel Machek
2004-10-16 19:52 ` Lee Revell
2004-10-16 21:46 ` Alan Cox
2004-10-17 1:24 ` Lee Revell
2004-10-17 1:50 ` Kyle Moffett
2004-10-17 2:21 ` Alan Cox
2004-10-17 3:33 ` Lee Revell
2004-10-22 11:40 ` Alexandre Oliva
2004-10-16 19:59 ` Måns Rullgård
2004-10-16 20:42 ` Pavel Machek
2004-10-07 14:34 ` Pavel Machek
2004-10-17 0:45 ` Alex Riesen
2004-10-07 10:37 ` Christian Hesse
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