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

>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...