Re: High frequency sound when loading the processor module -- Please help

[Vasileios Gkanis <gkanis-4fMUIQ/vbHD2fBVCVOL8/A@public.gmane.org>]

If in the file include/asm-i386/param.h, I change the 
#ifdef __KERNEL__
# define HZ  1000  /* Internal kernel timer frequency */
# define USER_HZ 100  /* .. some user interfaces are in "ticks" */
# define CLOCKS_PER_SEC  (USER_HZ) /* like times() */
#endif

to 
#ifdef __KERNEL__
# 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

will it do the trick or will I make a mess?
Can I experiment with different values? I read that RedHat uses HZ=512

On Friday 08 April 2005 03:39 pm, Dominik Brodowski wrote:
> On Fri, Apr 08, 2005 at 02:28:51PM -0600, Vasileios Gkanis wrote:
> > Hi,
> >
> > I have two objections to what you said:
> > If what you are saying is correct (I am not arguing with you on the
> > quality of the switches ....you might be right ...)
> > 1) I should hear this sound in Windows, but I do not
> > 2) I should hear the sound only when the system switches between the
> > states, and not all the time.
> >
> > I think it is a driver issue.
>
> It is the CPU being woken up 1000 times a second, thus switching between
> the states indeed this often. You can either use HZ - modifying patch or a
> patch making the system "tickless" to avoid these sounds. Both patch types
> are quite / very experimental, however.
>
>  Dominik
>
>
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