[time-nuts] sync computer clock ticks

M. Warner Losh imp at bsdimp.com
Fri Jan 4 12:03:41 EST 2008


In message: <97a7c7ed0801040600x5d2781cfl40e31dd70731492c at mail.gmail.com>
            "Michael Di Domenico" <mdidomenico at gmail.com> writes:
: I've used NTP for years, but i was under the impression that it is not
: able to synchonize the clocks below 1 or 2 seconds.   Can you point me
: towards a specific article that speaks about the configuration
: parameters to get ntp sync'd that low?

I don't know about other people, but out of the box I get sub 20ms
synchronization.  Right now, it is sitting at about 12.5ms:

     remote           refid      st t when poll reach   delay   offset  jitter
==============================================================================
*xxxxx.yyyyyy.co 10.7.1.1         2 u  965 1024  377   64.176  -12.570   0.508

My config file is just a simple:

server 1.2.3.4   # xxxxx.yyyyyyy.com

driftfile /mod/etc/ntp.drift

restrict default notrust nomodify

restrict 127.0.0.1
restrict 1.2.3.4
restrict 10.0.0.6
restrict 10.0.0.0 mask 255.255.0.0 notrust



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