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Date:      Mon, 5 Dec 2005 13:47:56 -0600
From:      "Matthew D. Fuller" <fullermd@over-yonder.net>
To:        Kevin Oberman <oberman@es.net>
Cc:        kama <kama@pvp.se>, freebsd-stable@freebsd.org, Peter Jeremy <PeterJeremy@optushome.com.au>
Subject:   Re: cpu-timer rate
Message-ID:  <20051205194756.GG90806@over-yonder.net>
In-Reply-To: <20051205181552.2D7AB5D04@ptavv.es.net>
References:  <20051205124910.GC90806@over-yonder.net> <20051205181552.2D7AB5D04@ptavv.es.net>

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On Mon, Dec 05, 2005 at 10:15:52AM -0800 I heard the voice of
Kevin Oberman, and lo! it spake thus:
> > From: "Matthew D. Fuller" <fullermd@over-yonder.net>
> > 
> > Because the rate is always twice hz.
> 
> While I will concede that I have no explanation, but on all of my
> systems rate = HZ +/-1. I have never seen a case where rate/2 = HZ.

Well, OK, it always is when you're using the LAPIC timer, which I
think is on 6.x and up (with the APIC enabled, of course).  When
you're using irq0, it just runs at hz.


-- 
Matthew Fuller     (MF4839)   |  fullermd@over-yonder.net
Systems/Network Administrator |  http://www.over-yonder.net/~fullermd/
           On the Internet, nobody can hear you scream.



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