blob: 9189d620479891eeeba7057478b024bcfbac0997 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
|
$Id$
‣ OFFSET_ARRAY_SIZE
pull in the following diff from MirBSD:
| Commit ID: 100470A1C1009540C55
| CVSROOT: /cvs
| Module name: src
| Changes by: tg@herc.mirbsd.org 2007/10/08 12:04:34 UTC
|
| Modified files:
| usr.sbin/ntpd : ntpd.h
|
| Log message:
| reduce the number of probes in the clock filter down to 4, so that adjtime
| is called at least approx. 3 times a hour, greatly helping us to reduce the
| size of the spikes for systems with clock drift (but increasing susceptibi-
| lity to latency-induced low-quality responses)
|
| tested on herc/rant with a value of 3 (adjust about 4 times an hour)
|
| XXX this should be made an ntpd.conf option instead of a define ASAP
| XXX this should be reverted once we have adjfreq(2)
but we use 3 here due to employment of adjtimex() which reduces
usability of older deltas
‣ SETTIME_MIN_OFFSET
reduce the minimum required time offset for 'ntpd -s' to
use settimeofday() instead of adjtime(), in order to provide
a faster time setting at start, since adjusting can take ages
--- openntpd-3.9p1.orig/ntpd.h Sun May 14 05:28:58 2006
+++ openntpd-3.9p1/ntpd.h Mon Oct 8 12:17:58 2007
@@ -55,8 +55,12 @@
#define QSCALE_OFF_MAX 0.50
#define QUERYTIME_MAX 15 /* single query might take n secs max */
-#define OFFSET_ARRAY_SIZE 8
-#define SETTIME_MIN_OFFSET 180 /* min offset for settime at start */
+#ifdef USE_ADJTIMEX
+#define OFFSET_ARRAY_SIZE 3 /* so they get invalidated faster */
+#else
+#define OFFSET_ARRAY_SIZE 4 /* min. 3, recommended 6, max. 8 */
+#endif
+#define SETTIME_MIN_OFFSET 12 /* min offset for settime at start */
#define SETTIME_TIMEOUT 15 /* max seconds to wait with -s */
#define LOG_NEGLIGEE 128 /* negligible drift to not log (ms) */
|
