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Date:      Wed, 28 Jun 2000 16:32:38 +0200
From:      Andreas Persson <pap@garen.net>
To:        freebsd-stable@FreeBSD.ORG
Subject:   Re: microuptime() going backwards
Message-ID:  <20000628163236.A70918@sophocles>
In-Reply-To: <200006280321.UAA00490@mass.osd.bsdi.com>; from msmith@freebsd.org on Tue, Jun 27, 2000 at 08:21:18PM -0700
References:  <20000627120348.B5328@sydney.worldwide.lemis.com> <200006280321.UAA00490@mass.osd.bsdi.com>

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On Tue, Jun 27, 2000 at 08:21:18PM -0700, Mike Smith wrote:
>I explained this to you at Usenix, actually.  It has nothing to do with 
>APM, it has to do with the selection of clocks available with/without APM 
>compiled into the kernel - there is probably either a bug in the TSC 
>hardware on this CPU, or (more likely) a bug in the timecounter code 
>(since people see this on !APM systems already).
Setting the sysctl kern.timecounter.method to 1 seems to have solved this
on one of my 4.0-RELEASE boxes. No microuptime() messages for almost 3
weeks now.

>-- 
>\\ Give a man a fish, and you feed him for a day. \\  Mike Smith
>\\ Tell him he should learn how to fish himself,  \\  msmith@freebsd.org
>\\ and he'll hate you for a lifetime.             \\  msmith@cdrom.com

-- 
Andreas Persson
pap@garen.net


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