Jan, A timer interrupt is required each second to update the clock frequency no matter what. In addition, a sweep is made through the associations to see if a poll is pending. It would be in principle posssible to implement a system of queues to avopid sweeping the associations each second, but that would save very few cycles, add some more cycles and additional complexity. My advice is to avoid the patch; however, be advised if used it might not work in future as the code is further refined.
Dave Jan Ceuleers wrote: > I came across the following page: > > http://www.lesswatts.org/projects/powertop/known.php > > which says the following on ntpd: > > "By default, the ntp time synchronization daemon will wake up once per > second, and will make the kernel do work on it's behalf even more. Red > Hat has created a patch to ntp to fix this issue and ships it in their > rawhide and FC7 ntp packages. You can download this patch from the > Fedora cvs server." > > Has anyone here looked at that patch? Does it compromise correctness of > the algorithms? > > Thanks, Jan _______________________________________________ questions mailing list [email protected] https://lists.ntp.org/mailman/listinfo/questions
