On Thu, 29 Oct 2009 07:15:21 -0700
j debert <jdebert(a)garlic.com> wrote:
Why do you need ntp?
All computer clocks drift. Some more than others.
Is the system clock severely sloppy about keeping
The system clock is only sometimes accurate when no other interrupts
have the CPU. Otherwise, a timer interrupt updates the number of
ticks, which updates the system time.
Is the CMOS clock a P.O.S.?
No. The CMOS clock is only used when the computer is powered off.
Is there something critical that requires zero delta
time with some
Left to their own devices, without NTP any two computer clocks will
[ .... ]
A script to periodically test the network connection and run netdate
or rdate when the network is up works just fine.
This is just a poor re-implementation of the NTPd client.
And assumes available connectivity to a static host.
[ .... ]
necessary to adjust clocks every couple months or so. So all ntp would
do is tie up resources that could better be used for other things.
I don't know where you got this mis-information. NTP is extremely
light weight. It does not tie up resources.
ntp was created because of the need to keep system
synchronised on a network for some time-critical applications. Most
people do not need it. Even the author discouraged it's use.
Again, this is pure nonsense. NTP is the correct method to keep
computer clocks in sync with the world clock. If you want to
have accurate time on your computer, you want to configure and run NTP.
There was once an easy to follow adjtime tutorial [
Anyone know where it went to?
Before I used openSuse, configuring NTP on server was as simple
as editing /etc/ntp.conf and changing the server line to point to
the hostname(s) of local ntp server(s). I just fired up yast and
see that it just puts up a radio box without explaining what the
different options mean.
Obviously, mobile computing has definitely upset the ease of setting
up network settings, NTP being only one part of a bigger configuration
Rich Coe rcoe(a)wi.rr.com
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