[ntp:questions] NTP 4.2.6p4 Released

unruh unruh at wormhole.physics.ubc.ca
Wed Sep 28 17:42:08 UTC 2011

On 2011-09-28, David J Taylor <david-taylor at blueyonder.co.uk.invalid> wrote:
> "NTP Public Services Project" <webmaster at ntp.org> wrote in message 
> news:E1R8ZLK-0007wF-QD at mail.kostecke.net...
>> Redwood City, CA - 2011/09/23 - The NTP Public Services Project
>> (http://support.ntp.org/) is pleased to announce that NTP 4.2.6p4,
>> a Point Release of the NTP Reference Implementation from the
>> NTP Project, is now available at http://www.ntp.org/downloads.html and
>> http://support.ntp.org/download.
> []
>> ntpd
>> * Added the NTPD_TICKADJ_PPM environment variable for specifying 
>> baseline
>>  clock slew on Microsoft Windows
> Does NTPD_TICKADJ_PPM allow the use of clocks which are more than 500 ppm 
> out?  Sorry if I missed any earlier discussion on this (and I don't run 
> Linux).  How does one go about determining the value to set - just 
> guesswork?
> I'm interested because someone has just reported problems with NTP on a 
> system which gain (or loses) 1 second in 10 minutes!  1 part on 600!  This 
> adjustment could be most helpful.

Is he using a virtual system? Is that loss constant ( or is it sometimes
1 sec, sometimes 3 sec sometimes nothing). He is eitehr running a
virtual machine, in which case he should not be using ntpd, or his
operating system is doing an attrocious job of setting the system time
rate of his clock. 

More information about the questions mailing list