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Date: Fri, 12 Jul 2002 10:30:13 -0700
From: george anzinger <george@mvista.com>
Organization: Monta Vista Software
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To: Roland Dreier <roland@topspin.com>
CC: Stevie O <oliver@klozoff.com>, lkml <linux-kernel@vger.kernel.org>
Subject: Re: HZ, preferably as small as possible
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Roland Dreier wrote:
> 
> >>>>> "george" == george anzinger <george@mvista.com> writes:
> 
>     george> Well, in truth it has nothing to do with interrupts.  It
>     george> is just that that is the way most systems keep time.  The
>     george> REAL definition of HZ is in its relationship to jiffies
>     george> and seconds.
> 
>     george> I.e. jiffies * HZ = seconds, by definition.
> 
> I'm sure you know the truth, but this isn't quite right.  Just to be
> pedantic and make sure the correct definition is out there:
> 
>   jiffies / HZ = seconds
> 
> For example if HZ is 100 then the jiffy counter is incremented 100
> times each second.
> 
Of course you are right.  Must have been a brain fart :)

-- 
George Anzinger   george@mvista.com
High-res-timers: 
http://sourceforge.net/projects/high-res-timers/
Real time sched:  http://sourceforge.net/projects/rtsched/
Preemption patch:
http://www.kernel.org/pub/linux/kernel/people/rml
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