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Message-ID: <2cd57c9005091321006825540@mail.gmail.com>
Date: Wed, 14 Sep 2005 12:00:23 +0800
From: Coywolf Qi Hunt <coywolf@gmail.com>
Reply-To: coywolf@gmail.com
To: markh@compro.net
Subject: Re: HZ question
Cc: linux-kernel@vger.kernel.org
In-Reply-To: <4326CAB3.6020109@compro.net>
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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/
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