Date: Sat, 21 May 2005 20:48:39 -0400 (EDT) From: Darrel <dlevitch@iglou.com> To: Christian Hiris <4711@chello.at> Cc: freebsd-questions@freebsd.org Subject: Re: NTP issues with 5.4 (SOLVED) (fwd) Message-ID: <Pine.GSO.4.61.0505212030210.18177@shell1> In-Reply-To: <200505212332.22596.4711@chello.at> References: <Pine.GSO.4.61.0505191853570.24602@shell1> <200505202240.27506.4711@chello.at> <200505212332.22596.4711@chello.at>
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On Sat, 21 May 2005, Christian Hiris wrote: > 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@chello.at> | OpenPGP KeyID 0x3BCA53BE > OpenPGP-Key at hkp://wwwkeys.eu.pgp.net and http://pgp.mit.edu > Thanks, Christian! And the FreeBSD computer has resolution to nanoseconds. Also, I upgraded the netBSD to 2.02_STABLE and compiled the kernel with RTC_OFFSET=0. Cheers, Darrel
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