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 it used to be common, free Unix-like PC OSes rarely have such a stepping OS clock these days -- much more commonly a high-resolution counter is selected to base system time on. Thanks, PHK!
Dr. Mills raised the possibility privately that either FreeBSD or Linux might be reconfigured to use a more primitive clock that steps once per millisecond or less. If possible and I am able to accomplish it, my testing of these bug 2037 fuzzing changes would be greatly assisted. I did a bit of searching but of course this is an odd request: "help me degrade the precision of my system clock, please" hasn't come up much. If you have any suggestions, please speak up here, or privately if you prefer. Thanks, Dave Hart _______________________________________________ questions mailing list questions@lists.ntp.org http://lists.ntp.org/listinfo/questions
