[ntp:questions] Re: NTP on laptop?

Danny Mayer mayer at ntp.isc.org
Wed Mar 8 18:09:26 UTC 2006

Dave Vandervies wrote:
> In article <440E157B.5090405 at cloudview.com>,
> John Pettitt  <jpp at cloudview.com> wrote:
>> If the net comes back with the same address you don't need to restart -
>> if it comes back with a
>> different address you do.
> Coming back with the same address is unlikely, and even having the
> same network interface come back up is probably not much better than
> random chance.
> So if I start ntpd on boot (with no network interface up), and restart
> it every time I bring up a network connection, it will handle starting
> with just the local clock and losing network connections sensibly without
> having to make changes to ntp.conf?

Unless you want to use different servers there should be no need to
change the configuration file.
> Also, by email you mentioned CPU frequency changes for power management.
> That could be a problem, since I have it configured to scale the CPU
> speed based on the load (with the Linux 2.6 cpufreq driver).  Is there
> a way to work around this without disabling the scaling entirely?
> (Or is cpufreq handled differently enough to not be considered a
> "low-power mode"?)

It depends how this all works within Linux.


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