[ntp:questions] Use ntpd as a daemon so that it continuously disciplines clock, no
David J Taylor
david-taylor at blueyonder.co.uk.invalid
Mon Jan 17 16:51:47 UTC 2011
> For notebook users running ntpd only as an NTP client the extra wakeup
> per second may make a measurable difference in battery life.
>
> I was just pointing out it will take more resources than ntpd -q run
> twice a day. Of course, the accuracy will be orders of magnitude
> worse than continuosly running ntpd (even with poll 15 or 16).
>
> --
> Miroslav Lichvar
Yes, I appreciate what you were pointing out about resources, and normally
I would agree with you.
However, David Malone reports 0.1% CPU for serving a thousand users, so
the CPU for a single user will be far less, and negligible for a notebook
user. Likely the overhead of launching the new process would outweigh any
CPU/battery saved. On the PC I'm using right now, ntpd working ourely as
a client has used 0.484 seconds total CPU in almost 2.5 days uptime, and
around 5MB of memory.
Cheers,
David
More information about the questions
mailing list