From owner-freebsd-current  Sat Sep 14  3:40:14 2002
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Date: Sat, 14 Sep 2002 03:23:41 -0700 (PDT)
From: Julian Elischer <julian@elischer.org>
To: Poul-Henning Kamp <phk@critter.freebsd.dk>
Cc: Terry Lambert <tlambert2@mindspring.com>,
	Mark Murray <mark@grondar.za>,
	FreeBSD current users <current@FreeBSD.ORG>
Subject: Re: A riddle in -current 
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On Sat, 14 Sep 2002, Poul-Henning Kamp wrote:

> In message <Pine.BSF.4.21.0209140244340.82711-100000@InterJet.elischer.org>, Ju
> lian Elischer writes:
> 
> >the only difference I've found so far is teh following differnce in the
> >dmesg output:
> >21,22c21
> >< Timecounter "ACPI-safe"  frequency 3579545 Hz
> >< unknown: I/O range not supported
> >---
> >> Timecounter "ACPI-fast"  frequency 3579545 Hz
> 
> You can test the difference this makes by timing
> 	for (i = 0; i < 1000000; i++)
> 		gettimeofday(&tv, NULL)
> 
> ACPI-safe means that the hardware doesn't act like a properly implemented
> binary counter (!) whereas ACPI-fast has not given any signs of having
> trouble during the boot-time probing.


that's interesting...
why would they differ.... thy are the same hardware
(serial numbers 1 apart ....) I'll have to investigate closer..

> 
> -- 
> Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
> phk@FreeBSD.ORG         | TCP/IP since RFC 956
> FreeBSD committer       | BSD since 4.3-tahoe    
> Never attribute to malice what can adequately be explained by incompetence.
> 


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