ntptime - read and set kernel time variables
Last update: November 23, 2022 17:49 UTC (1b4d24aef)
from Pogo, Walt Kelly
The turtle has been swimming in the kernel.
Table of Contents
Synopsis
ntptime [ -chr ] [ -e est_error ] [ -f frequency ] [ -m max_error ] [ -o offset ] [ -s status ] [ -t time_constant]
Description
This program is useful only with special kernels described in the A Kernel Model for Precision Timekeeping page. It reads and displays time-related kernel variables using the ntp_gettime()
system call. A similar display can be obtained using the ntpdc
program and kerninfo
command.
Options
-c
-
Display the execution time of ntptime
itself.
-e est_error
-
Specify estimated error, in microseconds.
-f frequency
-
Specify frequency offset, in parts per million.
-h
-
Display help information.
-m max_error
-
Specify max possible errors, in microseconds.
-o offset
-
Specify clock offset, in microseconds.
-r
-
Display Unix and NTP times in raw format.
-s status
-
Specify clock status. Better know what you are doing.
-t time_constant
-
Specify time constant, an integer in the range 0-10.