Re: NTp sources that work in a datacenter (was Re: Is latency equivalent to RTT?)

[Peter Lothberg <roll () stupi se>]

> In message <Pine.LNX.4.44.0305140802170.7544-100000 () twin uoregon edu>, Joel Jae
> ggli writes:
> > Also if you just need  a high level of syncronization between the time on 
> > all your hosts you can just deploy one standalone ntp server, sync it 
> > against public time sources and get everything synced against that. its 
> > probably a 95% solution to most people's timeing needs.
>
> If I recall correctly, NTP assumes that latency = RTT/2.  You might 
> make it work well for his application *if* you set up your tree so that 
> your paths are each one hop, or at least symmetric over your network.

Correct, and if it's asymetric you get a static offset. My laptops
internal clock is a bigger source of error...

-P