Il 14/11/2014 19:06, Claude Frantz ha scritto: > On 11/14/2014 06:39 PM, Alessandro Gorobey wrote: > >> Now time problem. The NTP protocol can maintain synchronized the clock >> with a reference, but normally on a good quality laptop have a very poor >> quality clock. Looking at the results of NTP I can see drift of 100mS in >> 12 hours from shutdown and startup. > I think that NTP is a good solution if a server is running on your > laptop. If an Internet connection is available, you can use some NTP > servers available in this network. If not, you can use a GPS mouse > and/or a receiver for standard time signals. > > Best 88 de Claude Perfect agree Claude I have the server running on my laptop. If I turnoff the computer for 12 or 24 hours, the internal clock is too poor to maintain the time. So an error of 100 mS is normal and will be corrected in short time but will never be perfect. Few and rare machines that I tested for experiment has an internal clock that avoid this initials errors and a lot of drift. The common chip-sets are not capable to maintain a few mS in all condictions.
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