4 ms·

Which hetzner server have hardware timestamping on the interface? I'd be really interested to know, since to the best of my knowledge, they don't have PTP solu

by csdvrx 5y ago

Which hetzner server have hardware timestamping on the interface? I'd be really interested to know, since to the best of my knowledge, they don't have PTP solutions in their datacenter.

withinboredom 5y ago
I have two of the AX41-NVMe, and only one was lucky enough to get a "Intel Corporation I210 Gigabit Network Connection (rev 03)" which has the hardware timestamping. In the finland datacenter, it appears there is a PTP running, though the offset is ~2.33 seconds off from NTP. Chrony says its a false-ticker, but I haven't really figured out how to get it configured correctly nor have I asked Hetzner for help. I've mostly just played around with it. I did manage to also accidentally discover a local ISP's stratum 1's server is extremely close to me, as in a few microseconds away (I accidentally put hetzner's servers as a pool instead of a server and my NTP 'discovered' the stratum 1) ... I'm not using it, but I've thought about reaching out to them to ask if I can use it if I'm very nice.
- csdvrx 5y ago
  Would you care to share the IPs? (both for the Hetzner PTP one and the local ISP stratum 1) Is the 2.33s stable? If so, after deducing the stable offset, it could still be valuable.
  - withinboredom 5y ago
    `/dev/ptp0` and `/dev/pps0` magically showed up and yeah, it appears to be stable. Chrony actually has it marked as a non-false ticker atm and is marked as a backup. Here's the stats: Name/IP Address NP NR Span Frequency Freq Skew Offset Std Dev ============================================================================== PPS 64 40 67m -6.827 33.059 -72ms 99ms PTP 6 3 20 -9.585 0.005 -119ms 10ns 192.168.100.1 6 3 88h -0.159 0.000 -12ms 3815ns 192.168.100.2 6 3 29h -0.176 0.299 -11ms 2817us ntp1.hetzner.de 14 10 154m -0.003 0.006 -47us 12us ntp2.hetzner.de 11 6 103m -0.001 0.005 -21us 5711ns ntp3.hetzner.de 9 6 137m -0.006 0.007 -72us 8949ns I don't feel great about sharing the discovered stratum 1's on the open internet, but my email address is in my profile.

by csdvrx 5y ago

Which hetzner server have hardware timestamping on the interface? I'd be really interested to know, since to the best of my knowledge, they don't have PTP solutions in their datacenter.

withinboredom 5y ago

I have two of the AX41-NVMe, and only one was lucky enough to get a "Intel Corporation I210 Gigabit Network Connection (rev 03)" which has the hardware timestamping. In the finland datacenter, it appears there is a PTP running, though the offset is ~2.33 seconds off from NTP. Chrony says its a false-ticker, but I haven't really figured out how to get it configured correctly nor have I asked Hetzner for help. I've mostly just played around with it. I did manage to also accidentally discover a local ISP's stratum 1's server is extremely close to me, as in a few microseconds away (I accidentally put hetzner's servers as a pool instead of a server and my NTP 'discovered' the stratum 1) ... I'm not using it, but I've thought about reaching out to them to ask if I can use it if I'm very nice.

csdvrx 5y ago
Would you care to share the IPs? (both for the Hetzner PTP one and the local ISP stratum 1) Is the 2.33s stable? If so, after deducing the stable offset, it could still be valuable.
- withinboredom 5y ago
  `/dev/ptp0` and `/dev/pps0` magically showed up and yeah, it appears to be stable. Chrony actually has it marked as a non-false ticker atm and is marked as a backup. Here's the stats: Name/IP Address NP NR Span Frequency Freq Skew Offset Std Dev ============================================================================== PPS 64 40 67m -6.827 33.059 -72ms 99ms PTP 6 3 20 -9.585 0.005 -119ms 10ns 192.168.100.1 6 3 88h -0.159 0.000 -12ms 3815ns 192.168.100.2 6 3 29h -0.176 0.299 -11ms 2817us ntp1.hetzner.de 14 10 154m -0.003 0.006 -47us 12us ntp2.hetzner.de 11 6 103m -0.001 0.005 -21us 5711ns ntp3.hetzner.de 9 6 137m -0.006 0.007 -72us 8949ns I don't feel great about sharing the discovered stratum 1's on the open internet, but my email address is in my profile.