On Dec 1, 8:58 am, "David J Taylor" <[EMAIL PROTECTED] bit.nor-this-bit.co.uk> wrote: > Richard B. Gilbert wrote: > > David J Taylor wrote: > >> Folks, > > >> I'm still trying to resolve NTP on Windows Vista. I do have a > >> dual-core system, so I was wondering how NTP handled dual-core. Does > >> it > >> discipline both cores, and is a special start-up switch required? > >> Should I > >> define the affinity for NTP to a single core? > > >> Looking at the AMD Web site, they do have a utility to sync the two > >> cores - "AMD Dual-Core Optimizer" - under certain circumstances. I > >> tried to install this on Vista, but a file appears to be missing! Has > >> anyone got this working, and does it affect NTP? > > >>http://www.amd.com/us-en/Processors/TechnicalResources/0,,30_182_871_... > > >> I seem to be full of questions and not answers today! > > >> Thanks, > >> David > > > I don't see why NTP should even be aware that it's running on a > > Dual-Core CPU. Why should it be any different from a box with, say, > > four CPUs? > > NTP on Windows uses the RDTSC instruction. Which CPU does it read the > time stamp counter from? If NTP is multi-threaded, different threads > could be run on different CPUs with different TSCs. Yes, just the same > issues arise with 4 CPUs, and I don't know how the Windows version of NTP > handles the multi-processor scenario. > > Cheers, > David- Hide quoted text - > > - Show quoted text -
You can use the START command to bind ntpd to specific processors (this is called processor affinity on Windows). I would try running: c:\>start /affinity 01 ntpd.exe <ntp options> If you get different or better behavior, then it is a multi-processor issue. _______________________________________________ questions mailing list [email protected] https://lists.ntp.org/mailman/listinfo/questions
