Dynamic changing of Hz value

Geert Uytterhoeven geert at linux-m68k.org
Wed Apr 13 21:12:24 EST 2005

On Wed, 13 Apr 2005, [iso-8859-1] Garcia Jérémie wrote:
> I'm working on a project that needs the clock granularity changed from 10ms to 5ms while running.
> So as a kernel newbie, I understand that I have to deal with the HZ value. I read a lot of things on it through many forums and mailing lists but they always talk about it in a static way (how to fix a value different from 100) as with the Robert love's patch. What I would like to do is to code a routine that allows to modify the HZ value dynamically but the more I read about it and the more I begin to think that it is not possible.
> Could someone tell me if, first of all, it is possible? If yes, what would be the process?
> Note: I'm using a linux montavista pro 3.1 ( kernel 2.4.20 ) with a powerPC 405EP

Googling for `dynamic HZ' gives http://kerneltrap.org/node/4393
It's for 2.6, though.



Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert at linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
							    -- Linus Torvalds

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