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Date:      Thu, 25 Mar 2004 09:27:05 +0100
From:      =?iso-8859-1?Q?Johan_Lindstr=F6m?= <johan.jl@home.se>
To:        "'jason'" <jason@ec.rr.com>, "'Nikolas Britton'" <freebsd@nbritton.org>
Cc:        freebsd-newbies@freebsd.org
Subject:   SV: CPU Clock Freq
Message-ID:  <20040325083057.1598043D46@mx1.FreeBSD.org>
In-Reply-To: <40627EF1.6060805@ec.rr.com>

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Nikolas, try the snapshot function of VMWare of you don=92t want to see =
the
cool startup messages.

-- Johan=20

> -----Ursprungligt meddelande-----
> Fr=E5n: owner-freebsd-newbies@freebsd.org=20
> [mailto:owner-freebsd-newbies@freebsd.org] F=F6r jason
> Skickat: den 25 mars 2004 07:41
> Till: Nikolas Britton
> Kopia: freebsd-newbies@freebsd.org
> =C4mne: Re: CPU Clock Freq
>=20
> Nikolas Britton wrote:
>=20
> > Can anyone explain why the clock is off by 17Mhz? This is=20
> non critical=20
> > btw I was just playing with the diff command an wasn't expecting to=20
> > see this, the system is FreeBSD 5.2.1 running as a guest OS=20
> in VMWare=20
> > (Win2k host).....my guess is its just vmware playing tricks=20
> on freebsd...
> >
> > #diff dmesg.today dmesg.yesterday
> > 8c8
> > < CPU: Intel(R) Celeron(R) CPU 1.70GHz (1733.85-MHz 686-class CPU)
> > ---
> > > CPU: Intel(R) Celeron(R) CPU 1.70GHz (1716.78-MHz 686-class CPU)
> > 79c79
> > < Timecounter "TSC" frequency 1733846104 Hz quality 800
> > ---
> > > Timecounter "TSC" frequency 1716778304 Hz quality 800
> > 85a86,91
> > > WARNING: / was not properly dismounted
> > > WARNING: /tmp was not properly dismounted
> > > /tmp: mount pending error: blocks 4 files 3
> > > WARNING: /usr was not properly dismounted
> > > WARNING: /var was not properly dismounted
> > > cd9660: RockRidge Extension
> >
> > _______________________________________________
> > freebsd-newbies@freebsd.org mailing list
> > http://lists.freebsd.org/mailman/listinfo/freebsd-newbies
> > To unsubscribe, send any mail to=20
> > "freebsd-newbies-unsubscribe@freebsd.org"
> >
> If no else will take this one, because of percent error.  The clock=20
> generator make a reference clock much lower that you cpu. =20
> The cpu uses=20
> multipliers of buses that are multiplies of this reference clock.  If=20
> the quartz crystal is off by 1%, then multiply by 10, 100, or=20
> 10,000 you=20
> can get 17 or more mhz off.  Also the temp of the crystal=20
> plays a role=20
> in the frequency at which it vibrates.  So a cold bootup vs a warm=20
> reboot will cause variance.  I am going from memory so this=20
> might not be=20
> perfect info.  Opps, I did not see the vmware part.  Well this info=20
> should still apply.  With a good motherboard monitor program=20
> you should=20
> see the cpu fluxuation a little too.  By the way are you =20
> shutting down=20
> freebsd properly?
>=20
> Jason
> _______________________________________________
> freebsd-newbies@freebsd.org mailing list
> http://lists.freebsd.org/mailman/listinfo/freebsd-newbies
> To unsubscribe, send any mail to=20
> "freebsd-newbies-unsubscribe@freebsd.org"
>=20
>=20




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