On Thu, Feb 16, 2017 at 7:55 AM, Chris Albertson <[email protected]> wrote: > > But PTP requires special hardware. You may not have this. >
I have to disagree. I run PTP on a Raspberry Pi using its onboard USB connected NIC, and onboard NICs on HP and Dell servers, I see +- 5 microsoconds jitter in the one way delay across 4 fanless HP switches, and when PTP is running on a Pi with a GPS hat with PPS, I see +50 -30 microseconds jitter in the reported offset from master across the slaves. If the requirement is for sub millisecond then PTP on commodity hardware is a _workable_ solution. If sub microsecond accuracy is required, then the NIC, Ethernet switch and time source hardware requirements change. Cheers _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
