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Date:      Thu, 07 Sep 2000 22:43:11 -0700
From:      Mike Smith <msmith@freebsd.org>
To:        Greg Lehey <grog@lemis.com>
Cc:        Kenneth Wayne Culver <culverk@wam.umd.edu>, John Baldwin <jhb@pike.osd.bsdi.com>, Steve Ames <steve@virtual-voodoo.com>, freebsd-current@FreeBSD.ORG
Subject:   Re: microuptime() went backwards 
Message-ID:  <200009080543.WAA01815@mass.osd.bsdi.com>
In-Reply-To: Your message of "Fri, 08 Sep 2000 13:54:33 %2B0930." <20000908135433.V83632@wantadilla.lemis.com> 

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> > Sep  7 14:35:55 laptop /kernel: microuptime() went backwards (10412.355980 -> 10412, -694583121)y
> >
> > this is bad.. right ? :-)
> 
> Well, at any rate it looks very funny.  If this is a laptop, try
> building a kernel without apm and see if that helps.

It only helps "hide" the problem.  There's either *extremely* bogus data 
coming in, or an arithmetic or sequencing error that's allowing a corrupt 
timecounter to be seen.

It might help to see the negative number as hex...

-- 
... every activity meets with opposition, everyone who acts has his
rivals and unfortunately opponents also.  But not because people want
to be opponents, rather because the tasks and relationships force
people to take different points of view.  [Dr. Fritz Todt]




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