Hi Miroslav, On Mon, Nov 01, 2021 at 10:13:36AM +0100, Miroslav Lichvar wrote: > On Fri, Oct 29, 2021 at 03:35:30PM +0300, Vladimir Oltean wrote: > > If I look at the struct timex definition from "man adjtimex", I see that > > both maxerror and esterror are expressed in microseconds (i.e. STA_NANO > > does not affect them), is that right? > > Yes, it's only microsecond resolution, but I think a new flag could be > implemented for better resolution if necessary.
I gave it a deeper thought, and even with nanosecond resolution, it would still not be what I need. I need to measure the CLOCK_REALTIME offset to something very specific, in this case to a PHC. With a generic kernel interface I wouldn't know who set that maxerror/esterror and what is the CLOCK_REALTIME actually synchronized to - it could very well be an NTP daemon. For what it's worth, I have solved both my problems (checking ptp4l sync and phc2sys sync) through alternative methods, so this program / patch set can be considered abandoned. _______________________________________________ Linuxptp-devel mailing list Linuxptp-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linuxptp-devel
