On Tue, Oct 23, 2018 at 02:46:04AM -1200, billingsleyjoseph wrote: > Hi All, I'm completing a short piece of work examining the effects of running > software and hardware based PTP implementations in different virtualised > environments/under different conditions. The important thing to test is the > error between the synced virtual clock and UTC.
I think this is a similar question to the one that was posted on the list today. To measure accuracy of a clock, one needs a more accurate reference clock. In virtual machines that could be a real NIC provided with PCI passthrough, or it could be the system clock of the host that is synchronized with HW timestamping and is available to the guest as a virtual PTP clock. In KVM that is possible with the ptp_kvm driver. -- Miroslav Lichvar _______________________________________________ Linuxptp-users mailing list Linuxptp-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linuxptp-users
