Re: HZ, preferably as small as possible

Linus Torvalds
2002-07-17T20:58:52Z

On Wed, 17 Jul 2002, Richard B. Johnson wrote:
>
> It is hardly novel and I can't imagine how Bresenham or whomever
> could make such a claim to the obvious. Even the DOS writer(s) used
> this technique to get one-second time intervals from the 18.206
> ticks/per second.

Ehh.. Look at _existing_ linux code to do exactly the same.

See update_wall_time_one_tick() and second_overflow() (which does a lot
more besides, but it does largely boil down to this "average fractions
using basic integer math" thing.

Linus