在 2013年11月19日星期二UTC+8上午10时45分44秒，Brian Inglis写道： > On 2013-11-18 01:30, [email protected] wrote:> hello : > I had > recently start a work about ntp service ,my friends and me use windows and > linux to sync time in ntp.we could use w32time service to sync linux in > ntp.In windows we could I found that in the registry： > > HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\W32Time\Config\ > MaxAllowedPhaseOffset may be could set the offset time between the local time > and the server that they will be synchronize. If out of range of > MaxAllowedPhaseOffset in seconds ,they synchronize,otherwise not. > But I > have a question that Is there a paremeter in ntp service that control the > offset like in registry above in windows. W32tm is an SNTP service intended > to synchronize time on workstations in a domain to a domain controller at > intervals.NTP service is intended to maintain accurate time on clients and > servers across the internet, where the accuracy willdepend on your budget and > effort, from <100ms with poolservers to <1us with reference clock hardware > and kernel PPS support.W32tm service parameters documented at > http://technet.microsoft.com/en-us/library/cc773263%28v=ws.10%29.aspx, may be > compared to options from NTP docs @ doc.ntp.org:e.g. Configuration Commands > and OptionsMiscellaneous Commands tinker - modify sacred system parameters > (dangerous) http://doc.ntp.org/4.2.6p5/miscopt.html#tinker for current stable > release 4.2.6p5tinker...... panic panic Specifies the panic threshold in > seconds with default 1000 s. If set to zero, the panic sanity check is > disabled and a clock offset of any value will be accepted.... step step > Specifies the step threshold in seconds. The default without this command is > 0.128 s. If set to zero, step adjustments will never occur. Note: The kernel > time discipline is disabled if the step threshold is set to zero or greater > than 0.5 s.... stepout stepout Specifies the stepout threshold in seconds. > The default without this command is 900 s. If set to zero, popcorn spikes > will not be suppressed.So tinker step is similar to W32tm > MaxAllowedPhaseOffset except for different service levels:The default value > for domain members is 300. The default value for stand-alone clients and > servers is 1. and the W32tm slew requirement: |CurrentTimeOffset| / > (PhaseCorrectRate*UpdateInterval) < SystemClockRate / 2 -- -- Take care. > Thanks, Brian Inglis _______________________________________________questions > mailing list [email protected]http://lists.ntp.org/listinfo/questions
But I have a question,how can I set this value,I just use it in a LAN to Synchonize the time in the LAN.So is that a stand-alone clients and servers.If it is ,which command should I use to change this value in LINUX OS. _______________________________________________ questions mailing list [email protected] http://lists.ntp.org/listinfo/questions
