Re: updating the RTC automagically

Rogier Wolff (R.E.Wolff@BitWizard.nl)
Mon, 22 Nov 1999 15:36:36 +0100 (MET)

Guest section DW wrote:
> On Mon, Nov 22, 1999 at
> This 11 min stuff has other evil effects, as documented:
> ------ Documentation/rtc.txt ------
> Also, if the kernel time is synchronized with an external source, the
> kernel will write the time back to the CMOS clock every 11 minutes. In
> the process of doing this, the kernel briefly turns off RTC periodic
> interrupts, so be aware of this if you are doing serious work.
> ------
>
> So, I would be happy if this 11 min stuff would be entirely removed.

For my purposes, the "every 11 minutes" behaviour is great: I run NTP,
and it gets in sync a few minutes after boot (Just a few hundred ms
drift since last write to CMOS).

I agree that for people wanting more accuracy, it needs to go. How
about allowing someone like that to turn off the "write cmos every 11
minutes:" behaviour?

Roger.

-- 
** R.E.Wolff@BitWizard.nl ** http://www.BitWizard.nl/ ** +31-15-2137555 **
*-- BitWizard writes Linux device drivers for any device you may have! --*
 "I didn't say it was your fault. I said I was going to blame it on you."


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