Gentoo Archives: gentoo-user

From: Matt Garman <garman@××××××××××.net>
To: gentoo-user <gentoo-user@l.g.o>
Subject: [gentoo-user] extreme clock drift / openntpd won't sync
Date: Wed, 31 Aug 2005 22:16:27
Message-Id: 20050831221333.GA8710@raw-sewage.net
1 My system clock is running extremely fast... so fast that even
2 openntpd (apparently) can't catch up!
3
4 I tried (oh how I tried) to get the "regular" ntp package to work.
5 I could correct my clock using ntpdate, but I could never get ntpd
6 to sync with any servers (see notes (*) below).
7
8 So I got fed up with trying to get it to work, and thought I'd have
9 better luck with openntpd (which is much simpler).
10
11 As far as I can tell, openntpd *is* working, as I have many lines in my
12 syslog that look like this:
13
14 Aug 31 17:00:36 [ntpd] adjusting local clock by -344.003180s
15
16 However, the clock is still drifting---not as fast as it does with no
17 ntp daemon running, but noticeably (it's gained about 5 minutes in less
18 than 24 hours). Note that without any ntp daemon running, my clock will
19 gain about 10 minutes per hour!
20
21 I have a hunch that whatever prevented the "regular" ntpd from syncing
22 is preventing openntpd from properly keeping the clock in sync.
23
24 So, my questions are: (1) what would cause my clock to run so fast? And
25 (2) why can't any ntp daemon keep correct time?
26
27 Thanks,
28 Matt
29
30
31
32 (*) If anyone is interested in the plight I had with ntp, here is some
33 info:
34
35 This is what my /etc/ntp.conf looked like:
36
37 restrict 127.0.0.1 nomodify
38 server pool.ntp.org prefer
39 server 0.pool.ntp.org
40 server 1.pool.ntp.org
41 server 2.pool.ntp.org
42 server 127.127.1.1
43 fudge 127.127.1.1 stratum 10
44 driftfile /var/lib/ntp/ntp.drift
45 logfile /var/log/ntpd.log
46
47 After starting ntpd, and waiting a while, ntpq results looked like
48 this:
49
50 ntpq> pe
51
52 remote refid st t when poll reach delay offset jitter
53 ==============================================================================
54 frigg.interstro 138.195.130.71 3 u 21 128 377 124.592 -3950.7 1260.34
55 cteha.ulp.co.il 192.114.62.249 3 u 26 128 377 201.236 -4670.9 1715.95
56 Time4.Stupi.SE .PPS. 1 u 79 128 377 129.134 -1668.9 1996.01
57 Time1.Stupi.SE 193.10.7.246 2 u 21 128 377 128.697 -3962.7 1253.70
58 *LOCAL(1) LOCAL(1) 10 l 13 64 377 0.000 0.000 0.001
59
60 ntpq> assoc
61
62 ind assID status conf reach auth condition last_event cnt
63 ===========================================================
64 1 57708 9014 yes yes none reject reachable 1
65 2 57709 9014 yes yes none reject reachable 1
66 3 57710 9014 yes yes none reject reachable 1
67 4 57711 9014 yes yes none reject reachable 1
68 5 57712 9614 yes yes none sys.peer reachable 1
69
70
71 --
72 Matt Garman
73 email at: http://raw-sewage.net/index.php?file=email
74 --
75 gentoo-user@g.o mailing list

Replies

Subject Author
Re: [gentoo-user] extreme clock drift / openntpd won't sync William Kenworthy <billk@×××××××××.au>
Re: [gentoo-user] extreme clock drift / openntpd won't sync Matt Randolph <mattr@×××××.com>