ntp problems on dapper/edgy
Luis
lemsx1 at gmail.com
Wed Aug 30 20:08:03 UTC 2006
I've been having a problem with the time of a computer that keeps
going faster than it should be. I tried everything I could think of to
get it back to normal, even a hackish hourly script that did:
$> cat /etc/cron.hourly/fixdateandtime
#!/bin/sh
# 2006-06-07 11:50 EDT
#
/etc/init.d/ntp-server stop > /dev/null
ntpdate ntp-1.local > /dev/null 2>&1 || \
ntpdate pool.ntp.org > /dev/null 2>&1
hwclock --systohc > /dev/null
hwclock --adjust > /dev/null
/etc/init.d/ntp-server start > /dev/null
My ntp-1.local server works fine. There are many computers connected
to that server and they are all working fine (even Ubuntu systems
running Dapper/Edgy on other computers). The problem seems to be with
the hardware of this computer in question.
After an hour or so, the time starts to get skewed up (faster) and
this is what I see from ntpq:
$> ntpq
ntpq> lpeers
remote refid st t when poll reach delay offset jitter
==============================================================================
10.10.201.31 .INIT. 16 u - 1024 0 0.000 0.000 4000.00
64.15.175.5 .INIT. 16 u - 1024 0 0.000 0.000 4000.00
fiordland.ubunt 192.36.133.17 2 u 135 1024 377 183.562 -642867 110100.
*LOCAL(0) LOCAL(0) 13 l 7 64 377 0.000 0.000 0.001
What can I try to fix this? I was thinking this is related to a bad
rtc driver, but that doesn't seem to be it.
These are a few lines from the log:
Aug 30 09:32:41 cypher ntpd[7453]: ntpd 4.2.0a at 1:4.2.0a+stable-8-r Fri
Jun 30 17:31:18 UTC 2006 (1)
Aug 30 09:32:41 cypher ntpd[7453]: precision = 1.000 usec
Aug 30 09:32:41 cypher ntpd[7453]: Listening on interface wildcard, 0.0.0.0#123
Aug 30 09:32:41 cypher ntpd[7453]: Listening on interface wildcard, ::#123
Aug 30 09:32:41 cypher ntpd[7453]: Listening on interface lo, 127.0.0.1#123
Aug 30 09:32:41 cypher ntpd[7453]: Listening on interface eth0, 10.21.11.57#123
Aug 30 09:32:41 cypher ntpd[7453]: kernel time sync status 0040
Aug 30 09:32:41 cypher ntpd[7453]: frequency initialized -5.995 PPM
from /var/lib/ntp/ntp.drift
Aug 30 09:35:58 cypher ntpd[7453]: synchronized to LOCAL(0), stratum 13
Aug 30 09:35:58 cypher ntpd[7453]: kernel time sync disabled 0041
Aug 30 09:37:01 cypher ntpd[7453]: kernel time sync enabled 0001
Aug 30 09:38:05 cypher ntpd[7453]: synchronized to 82.211.81.145, stratum 2
Aug 30 14:18:05 cypher ntpd[7453]: synchronized to LOCAL(0), stratum 13
Aug 30 15:43:29 cypher ntpd[7453]: synchronized to 82.211.81.145, stratum 2
Aug 30 16:00:33 cypher ntpd[7453]: synchronized to LOCAL(0), stratum 13
I also see these errors:
$> cat /var/log/syslog| grep set_rtc
Aug 30 16:01:02 cypher kernel: [17203441.224000] set_rtc_mmss: can't
update from 59 to 1
Aug 30 16:01:03 cypher kernel: [17203442.224000] set_rtc_mmss: can't
update from 59 to 1
Aug 30 16:01:05 cypher kernel: [17203444.224000] set_rtc_mmss: can't
update from 59 to 1
Aug 30 16:01:06 cypher kernel: [17203445.224000] set_rtc_mmss: can't
update from 59 to 1
Aug 30 16:01:07 cypher kernel: [17203446.224000] set_rtc_mmss: can't
update from 59 to 1
Aug 30 16:01:08 cypher kernel: [17203447.224000] set_rtc_mmss: can't
update from 59 to 1
Aug 30 16:01:09 cypher kernel: [17203448.224000] set_rtc_mmss: can't
update from 59 to 1
Aug 30 16:01:10 cypher kernel: [17203449.224000] set_rtc_mmss: can't
update from 59 to 1
--
----)(-----
Luis Mondesi
*NIX Guru
Kiskeyix.org
"We think basically you watch television to turn your brain off, and
you work on your computer when you want to turn your brain on" --
Steve Jobs in an interview for MacWorld Magazine 2004-Feb
No .doc: http://www.gnu.org/philosophy/no-word-attachments.es.html
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