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SubjectRe: clock skew
Maybe I was not clear in my first email or maybe I am confused.  The only time
the clock gets skewed is when I reboot or shutdown and then have to restart.
During normal daily operation the clock time is fine. It is only when
I shutdown the system like I did last night, and then restart it this morning
and it told me it was wed teh 29th of dec. I reset the clock and now it is
running fine. What will clock -w do that will affect the reboot?


> Setup a cron that periodicly issues a clock -w. (If you don't know how,
> ask and I will help).
>
> The problem is that your internal clock can't keep time right (which is
> why it drifts when it's off). While Linux (and NT) is running, it runs off
> it's own internal clock, which is sane. Linux never updates the cmos
> clock, but NT does.
>
> This is not a bug in Linux, it's just a difference in design decision.
>
> On Sun, 26 Dec 1999, Joe wrote:
>
> > Hi,
> > I am recently having a problem with my clock and date functions
> > skewing time. I know that my BIOS is okay because I have tested the
> > system under NT and al works fine. It only happens under Linux and it
> > is always during the boot sequence.
> >
> > If I use either the clock or the date function to set the time the
> > system runs fine, however due to certain circumstances I have to reboot
> > the system occasiionally. When the system sets the system clock, the
> > time is off and skewed forward. It is usually skewed forward about 30
> > minutes to 40 minutes and this is after I issue a reboot command. If
> > I turn off my computer and leave it off for a few hours or days the
> > system clock is then skewed forward several days. This morning when
> > I started my Linux box it was skewed forward to the 30th of Dec 1999.
> > I reset the clock and then rebooted and when the system came back it was
> > again ahead in time but this time only 30 minutes or so.
> > I tried the same test and booting into Win NT and after setting the
> > time once I was able to reboot to NT and not have any problems with my
> > system time.
> > Because I have recently just moved and am not completely set up I
> > must shut down my system occasionally.
> > The only thing that has changed is that I have recently started
> > using kernel 2.2.13. The system runs RH 6.0 and the clock gets set in
> > /etc/rc.d/rc.sysinit script. When it boots and shows me the time it is
> > always faster than it should.
> > Also there was one point that the date function was returning one
> > time and the clock function was returning another time. Although this
> > is probably not a kernel bug, I am wondering if anyone here can help me
> > figure this out?
> >
> > thanks..Joe
> >
> > --
> > Joe Acosta ........
> > home: joeja@mindspring.com
> >
> >
> >
> >
> > -
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> > the body of a message to majordomo@vger.rutgers.edu
> > Please read the FAQ at http://www.tux.org/lkml/
> >

--
Joe Acosta ........
home: joeja@mindspring.com



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