Re: [gentoo-user] System Clock Problems

[Nick Rout]

If your system stopped suddenly the ntp.drfit file may have become corrupted. As I understand it this file has a value in it that tells the system how much drift there is in the system clock, and uses the figutre to compensate. If the figure is way  out then the compensation will be way out.

Take a look at /var/lib/ntp/ntp.drift, if its seems like a large figure, then zero it and start again from scratch. ie stop ntpd, set the clock with ntpdate, then start the ntpd service again (preferably not while recording with mythtv LOL).


On Sun, 12 Feb 2006 12:10:20 -0800
Drew Tomlinson wrote:

> I have Gentoo 2.6.13-r5 kernel running and have used ntpd in
> broadcastclient mode to keep its time in sync on my home network.  The
> other day, the system suffered and abrupt shutdown due to a power
> outage.  Ever since then, the system clock gains about 10 seconds every
> 5 minutes.  Also, I can't get ntpd to sync the clock.  My command line
> is "ntpd -A -b -g -u ntp:ntp".  I've included some output running the
> command with the debug switch below.
>
> I've also tried to gain more info with the ntpdc utility although I
> don't really know what I'm doing.  However it appears that ntpd does see
> my FreeBSD time server even though it's not synced:
>
> ntpdc> peers
>      remote           local      st poll reach  delay   offset    disp
> =======================================================================
> =192.168.1.2     0.0.0.0          2   64    7 0.00038 -9.600170 1.98438
>
> The time server is a FreeBSD 6.0 box on my network.  My other FreeBSD
> box and two Windows boxes get time from it just fine.  Even the Gentoo
> box will set its clock with "ntpd -gq".  I am currently using this brute
> force method via a cron job as a temporary workaround.
>
> Any ideas on what might have caused this recent change in behavior?
>
> Thanks for your help,
>
> Drew
>
>
> --- Begin debug output ---
> ntpd 4.2.0a@1.1191-r Sat Feb 11 19:19:56 PST 2006 (1)
> addto_syslog: ntpd 4.2.0a@1.1191-r Sat Feb 11 19:19:56 PST 2006 (1)
> addto_syslog: precision = 3.000 usec
> create_sockets(123)
> addto_syslog: no IPv6 interfaces found
> bind() fd 4, family 2, port 123, addr 0.0.0.0, flags=8
> addto_syslog: Listening on interface wildcard, 0.0.0.0#123
> bind() fd 5, family 2, port 123, addr 127.0.0.1, flags=0
> addto_syslog: Listening on interface lo, 127.0.0.1#123
> bind() fd 6, family 2, port 123, addr 192.168.1.6, flags=8
> addto_syslog: Listening on interface eth1, 192.168.1.6#123
> init_io: maxactivefd 6
> local_clock: time 0 clock 0.000000 offset 0.000000 freq 0.000 state 0
> bind() fd 8, family 2, port 123, addr 192.168.1.255, flags=8
> io_setbclient: Opened broadcast client on interface 2, socket: 8
> io_setbclient: Opened broadcast clients
> addto_syslog: frequency initialized -36.958 PPM from /etc/ntp/ntp.drift
> local_clock: time 0 clock 0.000000 offset 0.000000 freq -36.958 state 1
> report_event: system event 'event_restart' (0x01) status 'sync_alarm,
> sync_unspec, 1 event, event_unspec' (0xc010)
> auth_agekeys: at 1 keys 1 expired 0
> timer: refresh ts 0
> receive: at 15 192.168.1.6<-192.168.1.2 mode 5 code 5
> Finding addr 192.168.1.2 in list of addresses
> key_expire: at 15
> peer_clear: at 15 assoc ID 33252 refid INIT
> newpeer: 192.168.1.6->192.168.1.2 mode 3 vers 4 poll 6 10 flags 0x210
> 0x20 ttl 0 key 00000000
> receive: at 15 0.0.0.0<-192.168.1.2 mode 5 code 6
> peer 192.168.1.2 event 'event_reach' (0x84) status 'unreach, 1 event,
> event_reach' (0x14)
> auth_agekeys: at 60 keys 1 expired 0
> transmit: at 79 0.0.0.0->192.168.1.2 mode 3
> receive: at 79 192.168.1.6<-192.168.1.2 mode 4 code 1
> clock_filter: popcorn 7.896193 0.000960
> receive: at 82 192.168.1.6<-192.168.1.2 mode 5 code 6
> receive: at 82 0.0.0.0<-192.168.1.2 mode 5 code 6
> auth_agekeys: at 120 keys 1 expired 0
> transmit: at 143 0.0.0.0->192.168.1.2 mode 3
> receive: at 143 192.168.1.6<-192.168.1.2 mode 4 code 1
> clock_filter: n 2 off -9.600170 del 0.000386 dsp 3.937744 jit 1.703977,
> age 64
> receive: at 148 192.168.1.6<-192.168.1.2 mode 5 code 6
> receive: at 148 0.0.0.0<-192.168.1.2 mode 5 code 6
> auth_agekeys: at 180 keys 1 expired 0
> transmit: at 206 0.0.0.0->192.168.1.2 mode 3
> receive: at 206 192.168.1.6<-192.168.1.2 mode 4 code 1
> clock_filter: n 3 off -9.600170 del 0.000386 dsp 1.938216 jit 1.639332,
> age 127
> receive: at 215 192.168.1.6<-192.168.1.2 mode 5 code 6
> receive: at 215 0.0.0.0<-192.168.1.2 mode 5 code 6
> --- End debug output ---
>
>
> --
> gentoo-user@g.o mailing list

-- 
Nick Rout <nick@×××××××.nz>

-- 
gentoo-user@g.o mailing list