Thanks, Miroslav. We are reading the TAI time by *clock_gettime* using CLOCK_TAI.
Though we see the UTC offset in PMC as set by the master, the *clock_gettime* does not reflect it. *clock_gettime* with CLOCK_TAI shows the same time as the CLOCK_REALTIME. Does PTP not override the kernel parameter tai_offset? On Wed, Oct 31, 2018 at 3:14 PM Miroslav Lichvar <mlich...@redhat.com> wrote: > On Wed, Oct 31, 2018 at 02:55:13PM +0530, Dolly Gyanchandani wrote: > > Hello all, > > > > We are using PTP Hardware TimeStamping (setup on CentOS7 machines). We > want > > to get TAI time. > > > > Through ptp4l and phc2sys, the system UTC clock gets updated by the PTP > > master clock. But is there a way to get TAI time? > > The kernel provides the CLOCK_TAI clock for applications. It can be > read with the clock_gettime() function. > > If you just need the UTC-TAI offset, there is the ntp_gettime() > function. > > -- > Miroslav Lichvar >
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