1calc_tickadj(1calc_tickadjman)   User Commands  calc_tickadj(1calc_tickadjman)
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NAME

6       calc_tickadj - Calculates optimal value for tick given ntp drift file.
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SYNOPSIS

9       calc_tickadj [-flags] [-flag [value]] [--option-name[[=| ]value]]
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11       All arguments must be options.
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DESCRIPTION

15       The  calc_tickadj script uses provided ntp drift file to generate opti‐
16       mal tick value. Generally, ntpd can do better job if the drift value is
17       the smallest possible number.
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19       The example output of
20           $ ./calc_tickadj
21           81.699 (drift)
22           9999 usec; 9999779 nsec
23           $ cat /var/lib/ntp/drift
24           -23.159
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26       means the following. If tick on that box is 10,000, by making the value
27       9999 we'll shift the box from its current drift of -23.159 to  a  drift
28       of 81.699, and in doing so we'll speed the clock up a little every sec‐
29       ond instead of slowing the clock down a little.
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31       If 'tick' on that box is 10,000,000 then by setting it to  9999779  the
32       drift value will be somewhere around 0.0.
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34       calc_tickadj  tries  to  determine  the the tick value by using tickadj
35       program from ntp package. If this doesn't work you can specify  current
36       tick manually on command line.
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OPTIONS

39       -d string, --drift-file=string
40              Ntp drift file to use.  The default string for this option is:
41                   /var/lib/ntp/drift
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43              Use the specified drift file for calculations
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45       -t number, --tick=number
46              Tick value of this host.  This option takes an integer number as
47              its argument.
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49              The current tick which to adjustment will be calculated
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51       -?, --help
52              Display usage information and exit.
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54       -!, --more-help
55              Pass the extended usage information through a pager.
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57       -v [{v|c|n --version [{v|c|n}]}]
58              Output version of program and exit.  The default mode is `v',  a
59              simple  version.   The `c' mode will print copyright information
60              and `n' will print the full copyright notice.
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EXIT STATUS

63       One of the following exit values will be returned:
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65       0  (EXIT_SUCCESS)
66              Successful program execution.
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68       1  (EXIT_FAILURE)
69              The operation failed or the command syntax was not valid.
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71       70  (EX_SOFTWARE)
72              libopts had an internal operational error.  Please report it  to
73              autogen-users@lists.sourceforge.net.  Thank you.
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NOTES

76       This  manual page was AutoGen-erated from the calc_tickadj option defi‐
77       nitions.
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81ntp (4.2.8p13)                    20 Feb 2019   calc_tickadj(1calc_tickadjman)
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