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Date:      Thu, 21 Mar 2002 19:22:23 +0100
From:      Thierry Herbelot <thierry@herbelot.com>
To:        Yann Ramin <atrus@atrustrivalie.org>
Cc:        "E.B. Dreger" <eddy+public+spam@noc.everquick.net>, stable@FreeBSD.ORG
Subject:   Re: microuptime() going backward in 4.5-R
Message-ID:  <3C9A24DF.49992674@herbelot.com>
References:  <Pine.LNX.4.20.0203210158430.10399-100000@www.everquick.net> <3C99429D.3000500@atrustrivalie.org>

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Yann Ramin wrote:
> 
> I had a similar problem when I upgraded to my new Athlon system. For
> some reason a rather old Intel fxp based card was causing time to go
> backwards when the interface was brought up. Didn't do that in 4.3-R
> which I was running before I upgraded everything. Never did really
> resolve it, just plucked the card. The motherboard is a Soyo Dragon Plus
> with an Athlon 1700+. I'm using the onboard VIA Rhine II, which is
> perfectly adequte for me. Just something to throw into the pile of odd
> and assorted problems.
> 
> Yann
> 
> E.B. Dreger wrote:
> 
> >Greetings all,
> >
> >My Micron PTSAM (Samurai bridge) dual-CPU board has been
> >experiencing time travel since upgrading to 4.5-R.  4.4-R and
> >4.3-R were stable.
> >

I suppose you see "microuptime time went backwards" error message ?

If so, you could try setting "options         NTIMECOUNTER=20" in your
kernel config (ISTR phk even added recently NTIMECOUNTER=HZ)

FWIW, this solved my problem on dual-P6 running 4.5-S

	TfH

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