On 2012-12-27, Ran Shalit <[email protected]> wrote: > On Thu, Dec 27, 2012 at 11:24 AM, unruh <[email protected]> wrote: >> delay be constant within 100msec, meaning > > Hi, > > SNPT performance with talks about accuracy of 100msec are shown in the > following white paper: > http://www.cisco.com/en/US/tech/tk869/tk769/technologies_white_paper09186a0080117070.shtml
Try it. See what you get. Or put in ntpd or chrony and get a few microsecond accuracy. > In out configuration we are talking about 2 machines, one using Linux > SNTP client, the other I do not know, but assume it is RT Operating > system. both machines are connected through ethernet. Whatever RT operating system is. > It seems that if we use SNTP (as is required right now), we can't > assure more accuracy then 100msec (according to that document), which And you believe all documents you read on the web? > might be probematic with our video sync requirements which are talking > about less then 40msec. > I appreciate any comments or ides, SNTP is not a program. It is a protocol, used for a) delivering time from a stratum 0 time source, or b) receiving time on a machine which will not server it to anyone else. ntpd is the stadard ntp program. chrony is in many cases more accurate. Both will give 10s of microseconds (not milliseconds) on Linux/bsd.. systems. Only ntpd works on windows. > Regards, > Ran _______________________________________________ questions mailing list [email protected] http://lists.ntp.org/listinfo/questions
