Re: [PATCH] i386: Selectable Frequency of the Timer Interrupt

Lee Revell
2005-07-15T00:15:06Z

On Fri, 2005-07-15 at 02:04 +0200, Jesper Juhl wrote:
> While reading this thread it occoured to me that perhaps what we
> really want (besides sub HZ timers) might be for the kernel to
> auto-tune HZ?
>
> Would it make sense to introduce a new config option (say
> CONFIG_HZ_AUTO) that when selected does something like this at boot:
>
> if (running_on_a_laptop()) {
> set_HZ_to(250);
> }

I don't think this will fly because we take a big performance hit by
calculating HZ at runtime.

Lee