Re: [ntp:questions] How do I validate my PPS clocks?

2013-02-26 Thread ramadog
On Tuesday, February 26, 2013 10:57:22 AM UTC+10, unruh wrote: > handling. And I only saw 1-2 us difference. Why are you getting 12us on > the ldisc code? The 11us in my case is how long it takes to get from early in the interrupt code in arch/x86/kernel/irq_32.c to where the time stamp is normal

Re: [ntp:questions] no servers, synchronized, time reset

2013-02-26 Thread unruh
On 2013-02-26, Trevor Woerner wrote: > Hi David, > > Thank you for your reply. > > On Tue, Feb 26, 2013 at 10:09 AM, David Taylor > wrote: >> The current NTP is 4.2.6, with 4.2.7 at an advanced development stage. My >> first suggestion would be to update to at least the current NTP and see >> wh

Re: [ntp:questions] no servers, synchronized, time reset

2013-02-26 Thread Trevor Woerner
On Tue, Feb 26, 2013 at 12:46 PM, David Taylor wrote: > Bill's (unruh) point about the multiple time resets is pertinent - they > simply shouldn't be happening. It suggests that something else might be > trying to set the time (were you running Windows). Thanks for your thoughts and suggestions.

Re: [ntp:questions] no servers, synchronized, time reset

2013-02-26 Thread Trevor Woerner
Thanks for taking a look. On Tue, Feb 26, 2013 at 12:25 PM, unruh wrote: >> When NTPd is started up on the client, it will initially set its time with: >> >> # ntpd -n -q -g > > Why? > ntpd will step the clock if it decides that the time is out by .128 sec. > It will die if the time is out by

Re: [ntp:questions] no servers, synchronized, time reset

2013-02-26 Thread David Taylor
On 26/02/2013 17:01, Trevor Woerner wrote: Hi David, Thank you for your reply. [] I have replaced ntpd, ntpdate, ntpq, and tickadj on my client with a build I just performed of ntp-dev-4.2.7p357. I configured this build with the following options: --enable-accurate-adjtime --enable-s

Re: [ntp:questions] no servers, synchronized, time reset

2013-02-26 Thread unruh
On 2013-02-25, Trevor Woerner wrote: > Hi everyone, > > I have been getting the following pattern show up in my log files and > I'm hoping to better understand why and perhaps figure out how to > improve the situation. > > I have two machines. One of which, the server, is syncing to an > upstream

Re: [ntp:questions] PPS only configuration

2013-02-26 Thread unruh
On 2013-02-26, Rob wrote: > Richard B. Gilbert wrote: >> I think that many hardware terminals e.g. VT100 or VT320 do not handle >> long lines well. >> >> I can't see any reason why anyone would need to send more than 132 >> characters in one line of text! >> >> You may have noted that books, ma

Re: [ntp:questions] How do I validate my PPS clocks?

2013-02-26 Thread unruh
On 2013-02-26, Charles Elliott wrote: > I performed the same kind of test on a commercial real-time O/S at > the time sold by Intel, but since divested. I put code in a program to > output a digital pulse when the mock application program received > notification of the parallel port interru

[ntp:questions] PPS woes

2013-02-26 Thread bodosom
I'm starting to feel fairly inept. I just moved an 18x to my office and attached it to a Dell running Ubuntu. Very similar to the previous host which worked fine. I can't figure out why my current status is 2001 instead of 2007. remote refid st t when poll reach delay

Re: [ntp:questions] no servers, synchronized, time reset

2013-02-26 Thread Trevor Woerner
Hi David, Thank you for your reply. On Tue, Feb 26, 2013 at 10:09 AM, David Taylor wrote: > The current NTP is 4.2.6, with 4.2.7 at an advanced development stage. My > first suggestion would be to update to at least the current NTP and see > whether the problem disappears. > > 4.2.0a may be so

Re: [ntp:questions] PPS only configuration

2013-02-26 Thread Rob
Richard B. Gilbert wrote: > I think that many hardware terminals e.g. VT100 or VT320 do not handle > long lines well. > > I can't see any reason why anyone would need to send more than 132 > characters in one line of text! > > You may have noted that books, magazines and newspapers limit their l

Re: [ntp:questions] PPS only configuration

2013-02-26 Thread Richard B. Gilbert
On 2/21/2013 1:08 PM, Mike S wrote: On 2/21/2013 8:52 AM, Brian Utterback wrote: Having said that, I note that Ed Mischanko's mailer is not sending text/plain flowed. So unruh has a point in that case. On 2/21/2013 8:38 AM, Brian Utterback wrote: Hate to get into a religious war here, but ther

Re: [ntp:questions] PPS only configuration

2013-02-26 Thread Richard B. Gilbert
On 2/21/2013 8:38 AM, Brian Utterback wrote: Hate to get into a religious war here, but there is a hard, factual standard here. RFC2646 which defines the MIME type text/plain format parameter. If you are reading a message with content type text/plain and format set to "flowed", and a non-quoted l

Re: [ntp:questions] no servers, synchronized, time reset

2013-02-26 Thread David Taylor
On 25/02/2013 20:31, Trevor Woerner wrote: Hi everyone, [] The client: - is running NTP version 4.2.4p4 [] The server's IP address is 148.198.225.221 and is running ntpd 4.2.0a. [] Any suggestions? Can I provide any more information? Best regards, Trevor The current NTP is 4.2.6, wi

[ntp:questions] no servers, synchronized, time reset

2013-02-26 Thread Trevor Woerner
Hi everyone, I have been getting the following pattern show up in my log files and I'm hoping to better understand why and perhaps figure out how to improve the situation. I have two machines. One of which, the server, is syncing to an upstream NTP server over one ethernet interface and acts as t

Re: [ntp:questions] How do I validate my PPS clocks?

2013-02-26 Thread Gabs Ricalde
The PPSAPI specification (RFC 2783) has an echo function where the PPS driver must assert/clear an output pin after receiving the PPS event, although the Linux PPS drivers doesn't seem to implement this. I tried this method on a polling PPS driver but using the time mark function of a LEA-6T GPS r

Re: [ntp:questions] How do I validate my PPS clocks?

2013-02-26 Thread Charles Elliott
I performed the same kind of test on a commercial real-time O/S at the time sold by Intel, but since divested. I put code in a program to output a digital pulse when the mock application program received notification of the parallel port interrupt and measured the interrupt service delay b