1<html lang="en"> 2<head> 3<title>calc_tickadj User's Manual</title> 4<meta http-equiv="Content-Type" content="text/html"> 5<meta name="description" content="calc_tickadj User's Manual"> 6<meta name="generator" content="makeinfo 4.7"> 7<link title="Top" rel="top" href="#Top"> 8<link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage"> 9<meta http-equiv="Content-Style-Type" content="text/css"> 10<style type="text/css"><!-- 11 pre.display { font-family:inherit } 12 pre.format { font-family:inherit } 13 pre.smalldisplay { font-family:inherit; font-size:smaller } 14 pre.smallformat { font-family:inherit; font-size:smaller } 15 pre.smallexample { font-size:smaller } 16 pre.smalllisp { font-size:smaller } 17 span.sc { font-variant:small-caps } 18 span.roman { font-family: serif; font-weight: normal; } 19--></style> 20</head> 21<body> 22<h1 class="settitle">calc_tickadj User's Manual</h1> 23<div class="node"> 24<p><hr> 25<a name="Top"></a>Next: <a rel="next" accesskey="n" href="#calc_005ftickadj-Description">calc_tickadj Description</a>, 26Previous: <a rel="previous" accesskey="p" href="#dir">(dir)</a>, 27Up: <a rel="up" accesskey="u" href="#dir">(dir)</a> 28<br> 29</div> 30 31<h2 class="unnumbered">calc_tickadj User's Manual</h2> 32 33<p>This document describes the use of the NTP Project's <code>calc_tickadj</code> program. 34This document applies to version 4.2.8p8 of <code>calc_tickadj</code>. 35 36 <div class="shortcontents"> 37<h2>Short Contents</h2> 38<ul> 39<a href="#Top">calc_tickadj User's Manual</a> 40</ul> 41</div> 42 43<ul class="menu"> 44<li><a accesskey="1" href="#calc_005ftickadj-Description">calc_tickadj Description</a>: Description 45<li><a accesskey="2" href="#calc_005ftickadj-Invocation">calc_tickadj Invocation</a>: Invoking calc_tickadj 46</ul> 47 48<div class="node"> 49<p><hr> 50<a name="calc_005ftickadj-Invocation"></a>Previous: <a rel="previous" accesskey="p" href="#calc_005ftickadj-Description">calc_tickadj Description</a>, 51Up: <a rel="up" accesskey="u" href="#Top">Top</a> 52<br> 53</div> 54 55<h3 class="section">Invoking calc_tickadj</h3> 56 57<p><a name="index-calc_005ftickadj-1"></a><a name="index-Calculates-_0022optimal_0022-value-for-tick-given-ntp-drift-file_002e-2"></a> 58The <code>calc_tickadj</code> script uses provided ntp drift file to generate optimal 59tick value. Generally, ntpd can do better job if the drift value is the 60smallest possible number. 61 62 <p>The example output of 63<pre class="example"> $ ./calc_tickadj 64 81.699 (drift) 65 9999 usec; 9999779 nsec 66 $ cat /etc/ntp/drift 67 -23.159 68</pre> 69 <p>means the following. If tick on that box is 10,000, by making the value 9999 70we'll shift the box from its current drift of -23.159 to a drift of 81.699, and 71in doing so we'll speed the clock up a little every second instead of slowing 72the clock down a little. 73 74 <p>If 'tick' on that box is 10,000,000 then by setting it to 9999779 the drift 75value will be somewhere around 0.0. 76 77 <p><code>calc_tickadj</code> tries to determine the the tick value by using 78<code>tickadj</code> program from ntp package. If this doesn't work you can specify 79current tick manually on command line. 80 81 <p>This section was generated by <strong>AutoGen</strong>, 82using the <code>agtexi-cmd</code> template and the option descriptions for the <code>calc_tickadj</code> program. 83 84<ul class="menu"> 85<li><a accesskey="1" href="#calc_005ftickadj-usage">calc_tickadj usage</a>: calc_tickadj help/usage (<span class="option">--help</span>) 86<li><a accesskey="2" href="#calc_005ftickadj-drift_002dfile">calc_tickadj drift-file</a>: drift-file option (-d) 87<li><a accesskey="3" href="#calc_005ftickadj-tick">calc_tickadj tick</a>: tick option (-t) 88<li><a accesskey="4" href="#calc_005ftickadj-exit-status">calc_tickadj exit status</a>: exit status 89</ul> 90 91<div class="node"> 92<p><hr> 93<a name="calc_005ftickadj-usage"></a>Next: <a rel="next" accesskey="n" href="#calc_005ftickadj-drift_002dfile">calc_tickadj drift-file</a>, 94Up: <a rel="up" accesskey="u" href="#calc_005ftickadj-Invocation">calc_tickadj Invocation</a> 95<br> 96</div> 97 98<h4 class="subsection">calc_tickadj help/usage (<span class="option">--help</span>)</h4> 99 100<p><a name="index-calc_005ftickadj-help-3"></a> 101This is the automatically generated usage text for calc_tickadj. 102 103 <p>The text printed is the same whether selected with the <code>help</code> option 104(<span class="option">--help</span>) or the <code>more-help</code> option (<span class="option">--more-help</span>). <code>more-help</code> will print 105the usage text by passing it through a pager program. 106<code>more-help</code> is disabled on platforms without a working 107<code>fork(2)</code> function. The <code>PAGER</code> environment variable is 108used to select the program, defaulting to <span class="file">more</span>. Both will exit 109with a status code of 0. 110 111<pre class="example">calc_tickadj - Calculates "optimal" value for tick given ntp drift file. - Ver. 4.2.7p467 112USAGE: calc_tickadj [ -<flag> [<val>] | --<name>[{=| }<val>] ]... 113 114 -d, --drift-file=str Ntp drift file to use 115 -t, --tick=num Tick value of this host 116 -?, --help Display usage information and exit 117 --more-help Pass the extended usage text through a pager 118 119Options are specified by doubled hyphens and their name or by a single 120hyphen and the flag character. 121</pre> 122 <div class="node"> 123<p><hr> 124<a name="calc_005ftickadj-drift_002dfile"></a>Next: <a rel="next" accesskey="n" href="#calc_005ftickadj-tick">calc_tickadj tick</a>, 125Previous: <a rel="previous" accesskey="p" href="#calc_005ftickadj-usage">calc_tickadj usage</a>, 126Up: <a rel="up" accesskey="u" href="#calc_005ftickadj-Invocation">calc_tickadj Invocation</a> 127<br> 128</div> 129 130<h4 class="subsection">drift-file option (-d)</h4> 131 132<p><a name="index-calc_005ftickadj_002ddrift_002dfile-4"></a> 133This is the “ntp drift file to use” option. 134This option takes a string argument. 135Use the specified drift file for calculations 136<div class="node"> 137<p><hr> 138<a name="calc_005ftickadj-tick"></a>Next: <a rel="next" accesskey="n" href="#calc_005ftickadj-exit-status">calc_tickadj exit status</a>, 139Previous: <a rel="previous" accesskey="p" href="#calc_005ftickadj-drift_002dfile">calc_tickadj drift-file</a>, 140Up: <a rel="up" accesskey="u" href="#calc_005ftickadj-Invocation">calc_tickadj Invocation</a> 141<br> 142</div> 143 144<h4 class="subsection">tick option (-t)</h4> 145 146<p><a name="index-calc_005ftickadj_002dtick-5"></a> 147This is the “tick value of this host” option. 148This option takes a number argument. 149The current tick which to adjustment will be calculated 150<div class="node"> 151<p><hr> 152<a name="calc_005ftickadj-exit-status"></a>Previous: <a rel="previous" accesskey="p" href="#calc_005ftickadj-tick">calc_tickadj tick</a>, 153Up: <a rel="up" accesskey="u" href="#calc_005ftickadj-Invocation">calc_tickadj Invocation</a> 154<br> 155</div> 156 157<h4 class="subsection">calc_tickadj exit status</h4> 158 159<p>One of the following exit values will be returned: 160 <dl> 161<dt><span class="samp">0 (EXIT_SUCCESS)</span><dd>Successful program execution. 162<br><dt><span class="samp">1 (EXIT_FAILURE)</span><dd>The operation failed or the command syntax was not valid. 163</dl> 164 165</body></html> 166 167