lkml.org 
[lkml]   [2005]   [Sep]   [14]   [last100]   RSS Feed
Views: [more markup]  [less markup]  [headers]  [forward] 
 
Messages in this thread
/
DateWed, 14 Sep 2005 12:00:23 +0800
FromCoywolf Qi Hunt <>
SubjectRe: HZ question
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
http://sosdg.org/~coywolf/
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-09-14 04:03    [from the cache]
©2003-2008