RFC 2783 (rfc2783) - Page 1 of 31

Pulse-Per-Second API for UNIX-like Operating Systems, Version 1

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Network Working Group                                          J. Mogul
Request for Comments: 2783                                   Compaq WRL
Category: Informational                                        D. Mills
                                                 University of Delaware
                                                          J. Brittenson
                                                                    Sun
                                                               J. Stone
                                                               Stanford
                                                               U. Windl
                                                Universitaet Regensburg
                                                             March 2000


   Pulse-Per-Second API for UNIX-like Operating Systems, Version 1.0

Status of this Memo

   This memo provides information for the Internet community.  It does
   not specify an Internet standard of any kind.  Distribution of this
   memo is unlimited.

Copyright Notice

   Copyright (C) The Internet Society (2000).  All Rights Reserved.

Abstract

   RFC 1589 describes a UNIX kernel implementation model for high-
   precision time-keeping.  This model is meant for use in conjunction
   with the Network Time Protocol (NTP, RFC 1305), or similar time
   synchronization protocols.  One aspect of this model is an accurate
   interface to the high-accuracy, one pulse-per-second (PPS) output
   typically available from precise time sources (such as a GPS or GOES
   receiver).  RFC 1589 did not define an API for managing the PPS
   facility, leaving implementors without a portable means for using PPS
   sources.  This document specifies such an API.















Mogul, et al.                Informational
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