Re: setserial low_latency - is it necessary?
Sviatoslav Feshchenko <[email protected]> Mon, 17 Jun 2024 11:47:47 +0000
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Many thanks for clarifying! Sviatoslav On Monday, June 17th, 2024 at 3:02 AM, Miroslav Lichvar <[email protected]> wrote: > On Thu, Jun 13, 2024 at 08:22:03PM +0000, Sviatoslav Feshchenko wrote: > > > - Is the 1PPS signal buffered if "low_latency" is NOT set? > > > I don't think it is. It should trigger the interrupt immediately. > > > - Is it necessary to configure the serial port for "low_latency" if 1PPS signal is available on the DCD pin, when the goal is to maximize the accuracy of the 1PPS signal? > > > For PPS it shouldn't matter. Easy to verify. Plot the raw offset from > the refclocks log, switch the low_latency flag, and see if there are > any jumps or changes in stability. > > -- > Miroslav Lichvar > > > -- > To unsubscribe email chrony-users-request-kWFZVVI9zxvPqho9SqqRMmD2FQJk+8+b@public.gmane.org > with "unsubscribe" in the subject. > For help email chrony-users-request-kWFZVVI9zxvPqho9SqqRMmD2FQJk+8+b@public.gmane.org > with "help" in the subject. > Trouble? Email [email protected] -- To unsubscribe email chrony-users-request-kWFZVVI9zxvPqho9SqqRMmD2FQJk+8+b@public.gmane.org with "unsubscribe" in the subject. For help email chrony-users-request-kWFZVVI9zxvPqho9SqqRMmD2FQJk+8+b@public.gmane.org with "help" in the subject. Trouble? Email [email protected]