Clock Problems

Michael Tsang miklcct at
Thu Dec 10 20:58:49 PST 2009

On Friday 11 December 2009 12:49:52 Johnneylee Rollins wrote:
> > I am use to old hardware (i486DX) having problems keeping time on the
> > hardware clock. But isn't the system clock a separate thing? I am losing
> > about 4 min on the system clock for every 10 minutes of real time. I've
> > googled around for clock drift information. What I found suggests  that
> > a system under heavy load with the 2.6.x kernel on certain hardware
> > might show this symptom. I've yet to try it, but I've read that adding
> > "clock=pit noapic nolapic" to the boot parameters should fix it.
> >
> > Is this something that will affect an LFS build? I don't like the idea
> > of finding out towards the end that it will. That is my main concern.
> > Should I ignore the clock issue? Is this something I should concern
> > myself about? Any advice would be welcome.
> >
> > Thanks in Advance,
> > Mykal Funk
>  I'm not sure about a permanent fix, but a script to update the time with a
> ntp server might help. I'm not sure of the best method for offline use
> unless someone can absolve this issue with a more permanent solution.

You may use the hwclock command periodically (that is in cron job) to help 
keeping your system time accurate.
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