Re: [Linuxptp-users] clock_nanosleep on /dev/ptpX

[Richard C. <ric...@gm...>]

On Wed, Feb 19, 2014 at 03:03:41PM +0000, Koehrer Mathias (ETAS/ESW5) wrote:
> 
> I think that phc2sys uses clock_adjtime() to modify the clock.
> My thought was that this should effect CLOCK_REALTIME and CLOCK_MONOTONIC...
> But likely I am wrong.

Both CLOCK_REALTIME and CLOCK_MONOTONIC use the same frequency, but
CLOCK_MONOTONIC starts with zero at boot time, and it never jumps. So
you cannot use it to start tasks on two different machines at the same
moment in time.

Thanks,
Richard