Re: [ntp:questions] Question on how to Slew time in NTP (David Woolley)

unruh wrote: ntpd will step the clock if it is more than 128ms out. He claims to be changing between two different GPS sources. If they are being used properly, the change should be 3 to 5 orders of magnitude less than that. ___ questions mai

Re: [ntp:questions] NTPD not synching on Ub 11.10

sirgad wrote: *ntp1.cis.strath 193.62.22.74 2 u 65 128 377 33.158 0.273 28.907 The * means it is synchronised. ___ questions mailing list questions@lists.ntp.org http://lists.ntp.org/listinfo/questions

Re: [ntp:questions] Question on how to Slew time in NTP (David Woolley)

> has the authentication in place to allow it to be added on the fly, the > biggest hit to the time will be that from stopping and starting ntpd, > to > change the configuration. So true! Are there simple instructions somewhere to allow one to setup NTPD so that ntpq.exe or ntpdc.exe can be used

Re: [ntp:questions] Linux, Garmin GPX-18X LVM & PPS

Hi Courtney, Thanks very much for the response. I've been on a course and taken some leave, which is why I am just getting back to this now. On 8 Dec 2011, at 14:13, Courtney Bane wrote: I'm fairly sure that your problem is that you don't have the timepps.h header installed (this is the hea

Re: [ntp:questions] NTPD not synching on Ub 11.10

On 2011-12-15, sirgad wrote: > NTPD 4.2.6.p2 on Ubuntu 11.10 Kernel 3.0.0-13-server. Connection to > the web is up and functioning fine. NTP does not use "the web". > UFW (firewall) is enabled but not blocking outgoing connections. > ntp.conf is as follows (only non- default settings are shown)

Re: [ntp:questions] How to verify Autokey Identity Schemes?

Hi Steve, Thank you for your comments. I tried ntpq -c "rv assID flags" command, it shows the Identity Scheme that the server supports regardless of what identity scheme has been installed on the client. Here are the result of my experiments: Server Identity scheme| ntpq -c "rv assID flags" -

[ntp:questions] Large variation in NTP synchronization time

Hi all, I've written a test script to test all the symmetric and autokey authentication key types and algorithms. The scripts waits for a delay time after restarting ntpd and then runs the "ntpq -c as" command to see if '*' has appeared beside the server name.The problem is that the synchronizat

[ntp:questions] ntp-keygen fails to generate MV parameters

I tried to generate autokey with -V 1 option for MV identity scheme but it failed as you can see below. I tried on two machines, both failed ntp-4.2.6p2- on Linux Fedora core 6, kernel 2.6.18-1.2798.fc6 and CentOs 5.4 with kernel 2.6.18-164.el5 *[root@myserver ntp]# ntp-keygen -T -V 1 -p serve

Re: [ntp:questions] Question on how to Slew time in NTP (David Woolley)

On 2011-12-15, Charles Elliott wrote: >> has the authentication in place to allow it to be added on the fly, >> the biggest hit to the time will be that from stopping and starting >> ntpd, to change the configuration. > > So true! Are there simple instructions somewhere to allow one to > setup NT

Re: [ntp:questions] Question on how to Slew time in NTP (David Woolley)

On 12/15/2011 10:32 AM, Steve Kostecke wrote: On 2011-12-15, Charles Elliott wrote: has the authentication in place to allow it to be added on the fly, the biggest hit to the time will be that from stopping and starting ntpd, to change the configuration. So true! Are there simple instruction

Re: [ntp:questions] Linux, Garmin GPX-18X LVM & PPS

Paul Duncan wrote: Hi Courtney, Thanks very much for the response. I've been on a course and taken some leave, which is why I am just getting back to this now. On 8 Dec 2011, at 14:13, Courtney Bane wrote: I'm fairly sure that your problem is that you don't have the timepps.h header install

Re: [ntp:questions] Question on how to Slew time in NTP (David Woolley)

On 2011-12-15, Richard B. Gilbert wrote: > On 12/15/2011 10:32 AM, Steve Kostecke wrote: >> On 2011-12-15, Charles Elliott wrote: >> has the authentication in place to allow it to be added on the fly, the biggest hit to the time will be that from stopping and starting ntpd, to chan

Re: [ntp:questions] NTPD not synching on Ub 11.10

On the whole it appears that the fault lies in my reliance on an out- dated and therefore misleading walkthrough. I am indeed synching correctly. I have posted a corrective reply to the walkthrough thread I followed, but it's on the second page so not all may see it. >> The IRC channel is dead s

[ntp:questions] Configure FreeBSD or Linux to use stepping clock?

I have some pending changes to improve the way ntpd fuzzes the insignificant bits of times it reads from the OS clock what that OS clock ticks slowly enough that it is possible for ntpd to read the same current time in subsequent gettimeofday()getclock() calls. See http://bugs.ntp.org/2037. While

Re: [ntp:questions] Question on how to Slew time in NTP (David Woolley)

On 2011-12-15, unruh wrote: > On 2011-12-15, Richard B. Gilbert wrote: > >> On 12/15/2011 10:32 AM, Steve Kostecke wrote: >> >>> On 2011-12-15, Charles Elliott wrote: >>> > has the authentication in place to allow it to be added on the > fly, the biggest hit to the time will be that from

Re: [ntp:questions] Question on how to Slew time in NTP (David Woolley)

Steve Kostecke wrote: There is no "hit" involved in a warm restart of a stable ntpd. Depends on whether it is using the kernel discipline. Chances are that this one is, but a lot of people set options that cause it to be disabled (trying to disable stepping). I was probably thinking in te

Re: [ntp:questions] Configure FreeBSD or Linux to use stepping clock?

Dave Hart wrote: > Linux might be reconfigured to use a more primitive clock that steps > once per millisecond or less. Linux Kernel 2.4 used 100 Hz and 2.6 increased it to 1000 Hz? Seems like related research / testing -- E-