Unruh - thanks for responding. You are the only one who did. I certainly did not mean to disparage NTP time. I have spec'ed that it be used on our system. Where I run into problems is when a leap second occurs. According to everything I've read when NTP signals the operating system that the second is occurring it also outputs time. It uses the POSIX standard method - duplicate a second (or in some cases stretch the last second). This causes confusion when a time sample is taken before the leap second and one during the leap second. The UTC standard (which only addresses ascii time representations) actually counts the second 0..60 rather than 0..59.
At this point I am obligated to use UTC and NTP. Tht missing second is causing me to get a lot of heat. Does anyone know of a way to get NTP to count the leap second rather than to delete it? Or am I missing the point. >I don't want to step on anyones toes but I am getting >a lot of heat over using a POSIX compliant ntp re leap >seconds. The 1 second error inserted can cause a lot >of trouble. Exactly what heat are you getting and what trouble is it causing you? Perhaps if you tell us the problem rather than your solution, we could come up with a solution. >I now that the Olsen mod changes most Unix/Linux time >processing to handle the leap second in a >theoretically correct manner rather than being POSIX I have no idea what "a theoretically correct manner " is. The Posix IS a theoretically correct manner. >compliant. Is there a similar mod for NTP. I am >hoping that there is a mod that will cause NTP to >supply theoretical UTC (even if it is not ascci). NTP DOES supply both theoretical and practical UTC. I think what you are worried about is that you want your system to provide something like TIA-- Atomic time-- which has no leap seconds. I believe the Olsen mods have your system clock run on atomic time and then use the leapsecond file and the zoneinfo file for your region to translate that to your local time. You could just set up ntp to add 33 sec to its time, and you would have atomic time. > Mark _______________________________________________ questions mailing list [email protected] https://lists.ntp.org/mailman/listinfo/questions
