97 lines
1.8 KiB
HTML
97 lines
1.8 KiB
HTML
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<HTML>
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<HEAD>
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<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1">
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<META NAME="GENERATOR" CONTENT="Mozilla/4.01 [en] (Win95; I) [Netscape]">
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<TITLE>ntptime - read kernel time variables
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</TITLE>
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</HEAD>
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<BODY>
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<H3>
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<TT>ntptime</TT> - read kernel time variables</H3>
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<HR>
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<H4>
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Synopsis</H4>
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<TT>ntptime [ -chr ] [ -e <I>est_error</I> ] [ -f <I>frequency</I> ] [
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-m <I>max_error</I> ] [ -o <I>offset</I> ] [ -s <I>status</I> ] [ -t <I>time_constant</I>
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]</TT>
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<H4>
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Description</H4>
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This program is useful only with special kernels described in the <A HREF="kern.htm">A
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Kernel Model for Precision Timekeeping </A>page. It reads and displays
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time-related kernel variables using the <TT>ntp_gettime()</TT> system call.
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A similar display can be obtained using the <TT>ntpdc</TT> program and
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<TT>kerninfo</TT> command.
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<H4>
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Options</H4>
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<DL>
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<DT>
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<TT>-c</TT></DT>
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<DD>
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Display the execution time of <TT>ntptime</TT> itself.</DD>
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<DT>
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<TT>-e <I>est_error</I></TT></DT>
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<DD>
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Specify estimated error, in microseconds.</DD>
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<DT>
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<TT>-f <I>frequency</I></TT></DT>
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<DD>
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Specify frequency offset, in parts per million.</DD>
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<DT>
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<TT>-h</TT></DT>
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<DD>
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Display times in Unix timeval format. Default is NTP format.</DD>
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<DT>
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<TT>-l</TT></DT>
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<DD>
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Specify the leap bits as a code from 0 to 3.</DD>
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<DT>
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<TT>-m <I>max_error</I></TT></DT>
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<DD>
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Display help information.</DD>
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<DT>
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<TT>-o <I>offset</I></TT></DT>
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<DD>
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Specify clock offset, in microseconds.</DD>
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<DT>
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<TT>-r</TT></DT>
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<DD>
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Display Unix and NTP times in raw format.</DD>
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<DT>
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<TT>-s <I>status</I></TT></DT>
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<DD>
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Specify clock status. Better know what you are doing.</DD>
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<DT>
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<TT>-t <I>time_constant</I></TT></DT>
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<DD>
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Specify time constant, an integer in the range 0-4.</DD>
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</DL>
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<HR>
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<ADDRESS>
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David L. Mills (mills@udel.edu)</ADDRESS>
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</BODY>
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</HTML>
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