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Date:      Sun, 30 Sep 2001 21:50:24 -0700
From:      Mike Smith <msmith@freebsd.org>
To:        mjacob@feral.com
Cc:        current@freebsd.org
Subject:   Re: reappearance of an old bug again? (microtime went backwards) 
Message-ID:  <200110010450.f914oOn05597@mass.dis.org>
In-Reply-To: Message from Matthew Jacob <mjacob@feral.com>  of "Sun, 30 Sep 2001 21:35:27 PDT." <Pine.BSF.4.21.0109302134440.95162-100000@beppo> 

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> 
> -current as of the last day or so- anyone else seen?
> 
> Sep 30 20:47:15 quarm ntpd[239]: kernel time discipline status change 2041
> microuptime() went backwards (939.4410978 -> 938.949317)

Try turning off the ACPI timer:

debug.acpi.disable="timer"

in loader.conf and see if it goes away.  I'm still looking for better
testing techniques, since it looks like the ACPI timer can't be trusted. 8(

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