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From: Mark Hounschell <markh@compro.net>
To: linux-kernel@vger.kernel.org
Subject: HZ question
Date: Tue, 13 Sep 2005 08:48:51 -0400	[thread overview]
Message-ID: <4326CAB3.6020109@compro.net> (raw)

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

             reply	other threads:[~2005-09-13 12:48 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-09-13 12:48 Mark Hounschell [this message]
2005-09-13 13:46 ` HZ question linux-os (Dick Johnson)
2005-09-13 14:00   ` Mark Hounschell
2005-09-13 14:20     ` Tim Schmielau
2005-09-13 15:05       ` Mark Hounschell
2005-09-13 16:01         ` Tim Schmielau
2005-09-13 16:41           ` Mark Hounschell
2005-09-13 16:47           ` Mark Hounschell
2005-09-13 18:38             ` Stefan Smietanowski
2005-09-13 19:17               ` Mark Hounschell
2005-09-13 23:19                 ` Daniel Barkalow
2005-09-13 17:34         ` john stultz
2005-09-13 19:15           ` Mark Hounschell
2005-09-14  4:15           ` George Anzinger
2005-09-13 20:13   ` jdow
2005-09-13 20:38     ` linux-os (Dick Johnson)
2005-09-15  1:29       ` Lee Revell
2005-09-13 14:07 ` Tim Schmielau
2005-09-14  4:00 ` Coywolf Qi Hunt
2005-09-15  1:20   ` Lee Revell
2005-09-15 16:16     ` Joe Bob Spamtest
2005-09-15 20:19       ` Valdis.Kletnieks
2005-09-15 20:34         ` Jesper Juhl

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