From 9d26ec35a5e620b65811dda7f150a4b5ab018c32 Mon Sep 17 00:00:00 2001
From: Mike Karels <karels@ucbvax.Berkeley.EDU>
Date: Wed, 14 May 1986 17:16:33 -0800
Subject: [PATCH] updates, rm machine-dependent comments (no longer accurate on
 vax)

SCCS-vsn: lib/libc/sys/adjtime.2 1.2
---
 usr/src/lib/libc/sys/adjtime.2 | 26 +++++++++-----------------
 1 file changed, 9 insertions(+), 17 deletions(-)

diff --git a/usr/src/lib/libc/sys/adjtime.2 b/usr/src/lib/libc/sys/adjtime.2
index 2d922a5d5d..02c7054826 100644
--- a/usr/src/lib/libc/sys/adjtime.2
+++ b/usr/src/lib/libc/sys/adjtime.2
@@ -2,7 +2,7 @@
 .\" All rights reserved.  The Berkeley software License Agreement
 .\" specifies the terms and conditions for redistribution.
 .\"
-.\"	@(#)adjtime.2	1.1 (Berkeley) %G%
+.\"	@(#)adjtime.2	1.2 (Berkeley) %G%
 .\"
 .TH ADJTIME 2 ""
 .UC 6
@@ -20,19 +20,17 @@ struct timeval *olddelta;
 .fi
 .SH DESCRIPTION
 .I Adjtime
-changes the system time, as returned by
+makes small adjustments to the system time, as returned by
 .IR gettimeofday (2),
-moving it backward or forward 
-by the number of microseconds corresponding to the timeval
+advancing or retarding it
+by the time speicified by the timeval
 \fIdelta\fP.
-.PP
-The time is maintained by incrementing it with a machine-dependent tick
-every clock interrupt.
 If \fIdelta\fP is negative, the clock is
-slowed down by incrementing it in smaller ticks until
-the correction is made.
-If \fIdelta\fP is positive, a larger tick
+slowed down by incrementing it more slowly than normal until
+the correction is complete.
+If \fIdelta\fP is positive, a larger increment than normal
 is used.
+The skew used to perform the correction is generally a fraction of one percent.
 Thus, the time is always
 a monotonically increasing function.
 A time correction from an earlier call to \fIadjtime\fP
@@ -42,7 +40,7 @@ then the structure pointed to will contain, upon return, the
 number of microseconds still to be corrected
 from the earlier call.
 .PP
-This call can be used in time servers that synchronize the clocks
+This call may be used by time servers that synchronize the clocks
 of computers in a local area network.
 Such time servers would slow down the clocks of some machines
 and speed up the clocks of others to bring them to the average network time.
@@ -50,12 +48,6 @@ and speed up the clocks of others to bring them to the average network time.
 The call 
 .IR adjtime (2)
 is restricted to the super-user.
-.SH NOTES
-On a VAX the time is incremented 
-in 10ms ticks.
-When \fIadjtime\fP is called with an argument other than zero,
-ticks of 9ms or 11ms are used until the time is corrected.
-A \fIdelta\fP of less than 1ms would have no effect.
 .SH "RETURN VALUE
 A return value of 0 indicates that the call succeeded.
 A return value of \-1 indicates that an error occurred, and in this
-- 
2.20.1