Return to README CVS log

Up to [ELWIX - Embedded LightWeight unIX -] / embedaddon / ntp / util

Annotation of embedaddon/ntp/util/README, revision 1.1.1.1

1.1       misho       1: README file for directory ./util of the NTP Version 4 distribution
                      2: 
                      3: This directory contains the sources for the various utility programs.
                      4: See the README and RELNOTES files in the parent directory for directions
                      5: on how to make and install these programs.
                      6: 
                      7: The ntptime.c program checks the kernel configuration for the NTP user
                      8: interface syscalls ntp_gettime() and ntp_adjtime().  If present, the
                      9: current timekeeping data are displayed.  If not, a dissapointment is
                     10: displayed.  See the kernel page file in the HTML documentation in
                     11: distribution for further details. ntptime will be built be if configure
                     12: believes your system can use it.
                     13: 
                     14: The jitter.c program can be used to determine the timing jitter due to
                     15: the operating system in a gettimeofday() call.  For most systems the
                     16: dominant contribution to the jitter budget is the period of the hardware
                     17: interrupt, usually in the range 10 us-1 ms.  For those systems with
                     18: microsecond counters, such as recent Sun and certain HP and DEC systems,
                     19: the jitter is dominated only by the operating system.
                     20: 
                     21: The timetrim.c program can be used with SGI machines to implement a
                     22: scheme to discipline the hardware clock frequency.  See the source code
                     23: for further information.
                     24: 
                     25: The byteorder.c and longsize.c programs are used during the configuration
                     26: process to determine the byte order (little or big endian) and longword
                     27: size (32 or 64 bits).  See the configure scripts for further details.
                     28: 
                     29: The testrs6000.c program is used for testing purposes with the IBM
                     30: RS/6000 AIX machines. Bill Jones <jones@chpc.utexas.edu> reports:
                     31: "I could not get a tickadj of less than 40 us to work on a RS6000.
                     32: If you set it less than 40 us do so at your own risk!"
                     33: 
                     34: The tickadj.c program can be used to read and set various kernel
                     35: parameters affecting NTP operations. See the tickadj page in the HTML
                     36: documentation for further details.  tickadj will be built if configure
                     37: believes your system can use it.