Re: [ntp:questions] NTP Cheat Sheet

2008-05-09 Thread David Woolley
Heiko Gerstung wrote: For me maxpoll is an important parameter as well because ntpd switches to larger polling intervals pretty fast and for a lot of our customers it is important that ntpd recognizes as fast as possible if a GPS signal is lost or the GPS receiver/IRIG time code reader/AM

Re: [ntp:questions] Linux 11-minute mode (RTC update)

2008-05-09 Thread Ulrich Windl
Serge Bets [EMAIL PROTECTED] writes: Hello Ulrich, On Friday, May 2, 2008 at 16:16:53 +0200, Ulrich Windl wrote: Bill Unruh [EMAIL PROTECTED] writes: Real men don't want the eleven-minutes mode. The words you attribute to Bill are mine. You'll have to count the '' characters... IMHO

[ntp:questions] NTP slow to start correction after a drift

2008-05-09 Thread Mike K Smith
Apologies for a long post, but I was unable to make it shorter. I have been monitoring timekeeping performance on an environment which contains 3 stratum 1 clocks and 4 Cisco routers running as stratum 2. The stratum 1s use time which is derived originally from GPS, but fed to the stratum 1

Re: [ntp:questions] NTP Cheat Sheet

2008-05-09 Thread Unruh
Heiko Gerstung [EMAIL PROTECTED] writes: David Woolley schrieb: Heiko Gerstung wrote: For me maxpoll is an important parameter as well because ntpd switches to larger polling intervals pretty fast and for a lot of our customers it is important that ntpd recognizes as fast as possible if a

Re: [ntp:questions] NTP Cheat Sheet

2008-05-09 Thread David L. Mills
David, There is need to dispell urban legends here. First, the only reference clock driver that uses anything other than minpoll is the ACTS driver. All others do not increase the poll interval under any circumstances. Second, there is no failover at all. The design is that more than one

Re: [ntp:questions] NTP slow to start correction after a drift

2008-05-09 Thread Brian Utterback
Do you have the frequency data from the same period as the graph? What happened to cause the frequency to be off all of a sudden? Brian Utterback ___ questions mailing list questions@lists.ntp.org https://lists.ntp.org/mailman/listinfo/questions

Re: [ntp:questions] NTP Cheat Sheet

2008-05-09 Thread David Woolley
David L. Mills wrote: There is need to dispell urban legends here. First, the only reference clock driver that uses anything other than minpoll is the ACTS driver. You introduced the possibility that there were exceptions, yourself, earlier in the thread; I was just caveating what I wrote

Re: [ntp:questions] NTP Cheat Sheet

2008-05-09 Thread David L. Mills
David, The flag FLAG_FIXPOLL is defined for all reference clock driverss except ACTS. With this flag defined, the poll interval is fixed at minpoll. See ntp_refclock.c and ntp_proto.c. Having thought about it, there actually are two scenarios involving failover, one with the local clock

[ntp:questions] Protect yourself against Operation Sudden Fall

2008-05-09 Thread Pilar . Delahay
Law enforcement is now intercepting text messages, as proven by Operation Sudden Fall in San Diego. http://www.usdoj.gov/dea/pubs/states/newsrel/sd050608.html http://www.signonsandiego.com/news/education/20080506-1338-bn06sdsu2.html Don't let your personal SMS/text messages fall into the wrong

[ntp:questions] SNTP client

2008-05-09 Thread praveen kumar
Hi, I am trying to implement a light weight SNTP client in C. Can someone tell me how to convert human readable time format into 64 bit NTP time stamp and vice versa? Is there any C function or library available for doing that ? Your help will be highly appreciated. Thanks, Praveen.