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From: Neil Brown <neilb@cse.unsw.edu.au>
To: Lorenzo Hernandez Garcia-Hierro <lorenzohgh@nsrg-security.com>
Date: Tue, 13 Jan 2004 14:48:21 +1100
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Message-ID: <16387.27269.8538.507466@notabene.cse.unsw.edu.au>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Noise with  2.6.0 in a Dell Laptop ( Latitude c600 )
In-Reply-To: message from Lorenzo Hernandez Garcia-Hierro on  January 7
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On  January 7, lorenzohgh@nsrg-security.com wrote:
> 
> Hi,
> 
> When the 2.6.0 inits in my laptop it becomes reaaallyyy noisy.
> Why ?

What sort of noise?  High pitched whine?  
I fix it with the following patch.

NeilBrown



Status: ok

Reduce HZ to 100

see if it affects noise..

 ----------- Diffstat output ------------
 ./include/asm-i386/param.h |    2 +-
 1 files changed, 1 insertion(+), 1 deletion(-)

diff ./include/asm-i386/param.h~current~ ./include/asm-i386/param.h
--- ./include/asm-i386/param.h~current~	2003-12-26 14:44:21.000000000 +1100
+++ ./include/asm-i386/param.h	2003-12-26 14:50:36.000000000 +1100
@@ -2,7 +2,7 @@
 #define _ASMi386_PARAM_H
 
 #ifdef __KERNEL__
-# define HZ		1000		/* Internal kernel timer frequency */
+# define HZ		100		/* Internal kernel timer frequency */
 # define USER_HZ	100		/* .. some user interfaces are in "ticks" */
 # define CLOCKS_PER_SEC	(USER_HZ)	/* like times() */
 #endif