[PLUG] ntpd and subnet

[Larry Brigman]

On Tue, Jun 24, 2014 at 11:58 AM, Rich Shepard <rshepard at appl-ecosys.com>
wrote:

> On Tue, 24 Jun 2014, Larry Brigman wrote:
>
> > If these laptops have CPU's that change frequency(or sleep) based on
> > load/temp, running ntpd is problematic. Also getting the machine into
> > hibernate mode to be moved also could cause problems. Running ntpdate via
> > cron is probably more than adequate.
>
> Larry,
>
>    I've no idea how the CPUs respond to load/temp. The load is generally
> limited to as many open browser tags as the memory will allow. :-)
>
>    Some times the laptops are on for several days continuously, other times
> they're shut down between uses.
>
>    I like your suggestion of running ntpdate via cron. What frequency would
> you recommend?
>
Probably no more than once an hour.  Using adjtimex to help determine if
the hwclock
is the source of your problem would also be a good idea as the starting
time is from
powered off is sourced from there and saved there if the machine goes
through the shutdown
cycle.

>
> Thanks,
>
> Rich
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