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- $Id$
- ‣ 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) */
-
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