On 12/29/18 6:51 AM, Matthew Huff wrote: > We have two stratum-1 servers synced with GPS and a PTP feed from a provider > that also provides PTP to market data systems, but we still have to monitor > drift between system time and NIST time. Don't ask for the logic behind it, > it's a regulation, not a technical requirement.
Having been a participant on Standards Working Groups, I understand completely. Regulations, like Standards, need to be written to apply to as wide a population as possible. Do those regulations dictate how you monitor drift? For example, can you have a system (I would use CentOS) that syncs to the appliance as well as NIST and your inside NTP sources, and use ntpq(8) to read the drift directly?