Re: HZ question

Coywolf Qi Hunt
2005-09-14T04:00:28Z

On 9/13/05, Mark Hounschell <markh@compro.net> wrote:
> I need to know the kernels value of HZ in a userland app.
>
> getconf CLK_TCK
> and
> hz = sysconf (_SC_CLK_TCK)
>
> both seem to return CLOCKS_PER_SEC which is defined as USER_HZ which is
> defined as 100.
>
> include/asm/param.h:
>
> #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
>
> Thanks in advance for any help
> Mark

simply zgrep HZ= /proc/config.gz
on my box, I get CONFIG_HZ=1000
--
Coywolf Qi Hunt