[ntp:questions] frequency adjusting only

Unruh unruh-spam at physics.ubc.ca
Tue Apr 22 22:41:02 UTC 2008

Steve Kostecke <kostecke at ntp.org> writes:

>On 2008-04-22, maxime louvel <m.louvel at gmail.com> wrote:

>> On Tue, Apr 22, 2008 at 2:42 PM, Steve Kostecke <kostecke at ntp.org> wrote:
>>> >I don't care if the synchronisation to the public NTP is accurate
>>> >around half a second.
>>> You're displaying a common misconception about NTP.


>> Sorry I haven't express myself correctly. What I meant is that I want an
>> accuracy of 50 usec within my subnet and I want my whole subnet to be
>> synchronised to UTC with an accuracy of 1 second or less if possible.

>In my experience ...

>On a LAN ntpd shows an inter-node offset of between 2ms to 500us

??? In my experience, on a Lan ntpd shows an internode offset of about 5-15
usec, and on the internet (ADSL) an offset of about 200usec.

>On The Internet ntpd shows an inter-node offset of between 10ms and 1ms


>Steve Kostecke <kostecke at ntp.org>
>NTP Public Services Project - http://support.ntp.org/

More information about the questions mailing list