On Thu, 29 Apr 1999, Ralf Baechle wrote:
> > But this could not be a solution, I think. Why is this systemclock
> > drifting anyway?
>
> The systemclock, that is the jiffies counter, is interrupt driven. If
> the system misses an interrupt, you're loosing 1/HZ, that is 0.01s for
> an Intel system. In particular SCSI systems tend to loose interrupts.
> The clock jitter caused by this effect is often so bad that xntpd looses
> synchronisation.
i'm afraid this does not explain my time drift. I occasionally see a time
drift between reboots as well (it could be a jump of 5 or 10 minutes
backwards?), but it's rather sporadic. I reboot very often :) (and i've
been running 'missed tick' detectors for some time and my box is not
losing timer IRQs). So something else has to be the reason ... I'm not
using xntpd.
-- mingo
-
Linux SMP list: FIRST see FAQ at http://www.irisa.fr/prive/mentre/smp-faq/
To Unsubscribe: send "unsubscribe linux-smp" to [EMAIL PROTECTED]
