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diff --git a/contrib/ntp/html/tickadj.htm b/contrib/ntp/html/tickadj.htm deleted file mode 100644 index 3d9745e..0000000 --- a/contrib/ntp/html/tickadj.htm +++ /dev/null @@ -1,105 +0,0 @@ -<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"> -<html> -<head> -<meta name="generator" content="HTML Tidy, see www.w3.org"> -<title>tickadj - set time-related kernel variables</title> -</head> -<body> -<h3><tt>tickadj</tt> - set time-related kernel variables</h3> - -<hr> -<h4>Synopsis</h4> - -<tt>tickadj [ -Aqs ] [ -a <i>tickadj</i> ] [ -t <i>tick</i> ]</tt> - -<h4>Description</h4> - -The <tt>tickadj</tt> program reads, and optionally modifies, -several timekeeping-related variables in the running kernel in some -machines, via <tt>/dev/kmem</tt>. The particular variables it is -concerned with are <tt>tick</tt>, which is the number of -microseconds added to the system time during a clock interrupt, -<tt>tickadj</tt>, which sets the slew rate and resolution used by -the <tt>adjtime</tt> system call, and <tt>dosynctodr</tt>, which -indicates to the kernels on some machines whether they should -internally adjust the system clock to keep it in line with -time-of-day clock or not. - -<p>Note that this program does NOT work in some kernels, in -particular Solaris 2.6 or later. See the <a href= -"solaris-dosynctodr.html">report</a>.</p> - -<p>By default, with no arguments, <tt>tickadj</tt> reads the -variables of interest in the kernel and displays them. At the same -time, it determines an "optimal" value for the value of the <tt> -tickadj</tt> variable if the intent is to run the <tt>ntpd</tt> -Network Time Protocol (NTP) daemon, and prints this as well. Since -the operation of <tt>tickadj</tt> when reading the kernel mimics -the operation of similar parts of the <tt>ntpd</tt> program fairly -closely, this can be useful when debugging problems with <tt> -ntpd</tt>.</p> - -<p>Note that <tt>tickadj</tt> should be run with some caution when -being used for the first time on different types of machines. The -operations which <tt>tickadj</tt> tries to perform are not -guaranteed to work on all Unix machines and may in rare cases cause -the kernel to crash.</p> - -<h4>Command Line Options</h4> - -<dl> -<dt><tt>-a <i>tickadj</i></tt></dt> - -<dd>Set the kernel variable <tt>tickadj</tt> to the value <i><tt> -tickadj</tt></i>specified.</dd> - -<dt><tt>-A</tt></dt> - -<dd>Set the kernel variable <tt>tickadj</tt> to an internally -computed "optimal" value.</dd> - -<dt><tt>-t <i>tick</i></tt></dt> - -<dd>Set the kernel variable <tt>tick</tt> to the value <i><tt> -tick</tt></i> specified.</dd> - -<dt><tt>-s</tt></dt> - -<dd>Set the kernel variable <tt>dosynctodr</tt> to zero, which -disables the hardware time-of-year clock, a prerequisite for -running the <tt>ntpd</tt> daemon under SunOS4.</dd> - -<dt><tt>-q</tt></dt> - -<dd>Normally, <tt>tickadj</tt> is quite verbose about what it is -doing. The <tt>-q</tt> flag tells it to shut up about everything -except errors.</dd> -</dl> - -<h4>Files</h4> - -<pre> -/vmunix - -/unix - -/dev/kmem -</pre> - -<h4>Bugs</h4> - -Fiddling with kernel variables at run time as a part of ordinary -operations is a hideous practice which is only necessary to make up -for deficiencies in the implementation of <tt>adjtime</tt> in many -kernels and/or brokenness of the system clock in some vendors' -kernels. It would be much better if the kernels were fixed and the -<tt>tickadj</tt> program went away. - -<hr> -<a href="index.htm"><img align="left" src="pic/home.gif" alt= -"gif"></a> -<address><a href="mailto:mills@udel.edu">David L. Mills -<mills@udel.edu></a></address> -</body> -</html> - |
