NTP issues with 5.4 (SOLVED) (fwd)

[Christian Hiris]

On Saturday 21 May 2005 15:56:15, Darrel wrote:
> On Fri, 20 May 2005, Christian Hiris wrote:
> > On Friday 20 May 2005 01:01:01, Darrel wrote:

[...]

> Thanks, Christian!
>
> I am comparing to a NetBSD computer with older hardware, that seems to
> always have PLL enabled:
>
> May 14 18:26:10 ntpd[343]: ntpd 4.2.0-r Wed Mar 23 08:12:50 UTC
> 2005 (1)
> May 14 18:26:11 ntpd[343]: precision = 2.000 usec
> May 14 18:26:11 ntpd[343]: kernel time sync status 0040
> May 14 18:26:12 ntpd[343]: frequency initialized 74.725 PPM
> from /var/db/ntp.drift
> May 14 18:29:29 ntpd[343]: time reset -1.128987 s
> May 14 18:29:29 ntpd[343]: kernel time sync disabled 0041
> May 14 18:35:49 ntpd[343]: kernel time sync enabled 0001
>
> Probably the 4 indicates that the clock had drifted too far for the
> program to permit syncing to- perhaps the battery should be replaced.

No, that's ok. The synchronization takes some minutes. The '1' indicates that 
PLL updates enabled, but it doesn't tell you much about the actual PLL/FFL 
mode. About weak batteries - I run ntpd on a i386 machine that had no battery 
inserted w/o any problems. 

> I 
> am still not sure why we do not see the new NTP4 mode shift to FLL, as
> with the FreeBSD computer.
>
> Maybe the /var/log/messages are just implemented differently on NetBSD
> 2.02.  I will watch it occasionally with 'ntpdc -c kerninfo | grep
> status'.  This NetBSD clock is also set to UTC and it seems that I
> recall that UTC can be improperly implemented when the computer
> previously had Microsoft Windows installed.

The answer to your question is quite simple. The status bit STA_MODE hasn't 
been implemented in netBSD. I run a diff on FreeBSD's and netBSD's timex.h to 
point out the status bits differences:

$ diff -u timex.h-freebsd timex.h-netbsd | grep STA_
- *     format in use is determined by the STA_NANO bit of the status
- *     STA_NANO bit in the status word. See the description below for
- * STA_FLL bit in the status word.
 #define STA_PLL                0x0001  /* enable PLL updates (rw) */
 #define STA_PPSFREQ    0x0002  /* enable PPS freq discipline (rw) */
 #define STA_PPSTIME    0x0004  /* enable PPS time discipline (rw) */
-#define STA_FLL                0x0008  /* enable FLL mode (rw) */
+#define STA_FLL                0x0008  /* select frequency-lock mode (rw) */
 #define STA_INS                0x0010  /* insert leap (rw) */
 #define STA_DEL                0x0020  /* delete leap (rw) */
 #define STA_UNSYNC     0x0040  /* clock unsynchronized (rw) */
 #define STA_FREQHOLD   0x0080  /* hold frequency (rw) */
 #define STA_PPSSIGNAL  0x0100  /* PPS signal present (ro) */
 #define STA_PPSJITTER  0x0200  /* PPS signal jitter exceeded (ro) */
 #define STA_PPSWANDER  0x0400  /* PPS signal wander exceeded (ro) */
 #define STA_PPSERROR   0x0800  /* PPS signal calibration error (ro) */
 #define STA_CLOCKERR   0x1000  /* clock hardware fault (ro) */

-#define STA_NANO       0x2000  /* resolution (0 = us, 1 = ns) (ro) */
-#define STA_MODE       0x4000  /* mode (0 = PLL, 1 = FLL) (ro) */
-#define STA_CLK                0x8000  /* clock source (0 = A, 1 = B) (ro) */

 #define STA_RONLY (STA_PPSSIGNAL | STA_PPSJITTER | STA_PPSWANDER | \
-    STA_PPSERROR | STA_CLOCKERR | STA_NANO | STA_MODE | STA_CLK)
+    STA_PPSERROR | STA_CLOCKERR) /* read-only bits */

- * Note: The time member is in microseconds if STA_NANO is zero and
- * STA_NANO is zero and nanoseconds if not.

The complete sources are available via cvsweb: 
http://www.freebsd.org/cgi/cvsweb.cgi/~checkout~/src/sys/sys/timex.h
http://cvsweb.netbsd.org/bsdweb.cgi/~checkout~/src/dist/ntp/kernel/sys/timex.h

Cheers,
ch    

-- 
Christian Hiris <4711 at chello.at> | OpenPGP KeyID 0x3BCA53BE 
OpenPGP-Key at hkp://wwwkeys.eu.pgp.net and http://pgp.mit.edu
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