Ntp Frequency Error
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Ntp Drift Tolerance
manually. It lists 3 servers - 0.rhel.pool.ntp.org, 1 and 2. At the end, there are also a couple of additional local servers with the comment added by /sbin/dhclient-script. The replica on the same network with an identical ntp.conf file doesn't have these messages in the current log. However, if I go back to a week, I see similar messages there too. The ping to public ntp servers varies from to a few ms to ~50 ms. The ping ntp tolerance to local servers is under 1 ms. I followed steps from the first link (ntpd -qg), and the messages have stopped for now, but I suspect that they will reappear later. That's what happened last time I tried that solution. This is the output from ntpq -pn on the master: remote refid st t when poll reach delay offset jitter==============================================================================+38.229.71.1 204.123.2.5 2 u 39 64 377 44.300 -1311.8 7.668+64.6.144.6 128.252.19.1 2 u 25 64 377 38.184 -1327.6 12.615-129.250.35.251 200.98.196.212 2 u 30 64 377 14.649 -1318.8 7.079 127.127.1.0 .LOCL. 10 l - 64 0 0.000 0.000 0.000*localnetip1 localnetref1 2 u 55 64 377 0.349 -1316.0 8.264-localnetip2 localnetref2 3 u 64 64 377 0.459 -1309.6 10.516On Thu, Sep 10, 2015 at 5:27 AM, Andrew Holway
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Ntp Drift File
_ Server Fault is a question and answer site for system and network administrators. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a https://www.redhat.com/archives/freeipa-users/2015-September/msg00157.html question Anybody can answer The best answers are voted up and rise to the top ntpd frequency error -1732 PPM exceeds tolerance 500 PPM up vote 1 down vote favorite I'm getting this error on my PC: frequency error -1732 PPM exceeds tolerance 500 PPM Any ideas? windows ntpd share|improve this question asked Apr 12 '12 at 8:44 user626528 154127 add a comment| 2 http://serverfault.com/questions/378784/ntpd-frequency-error-1732-ppm-exceeds-tolerance-500-ppm Answers 2 active oldest votes up vote 6 down vote accepted This means that the difference between your local time and the server you're syncing with has exceed ntpd's limit. ntpd will only sync the local time if it is relatively close to the time server. This is why Red Hat (as an example) uses ntpdate the first time you start the ntpd service to set the local time to be in the right ball park. You should also make sure that the ntp servers you are syncing with are relatively close. You can do these steps manually if you want (e.g. you're not running Red Hat which includes the ntpdate step in it's restart script): # /etc/init.d/ntpd stop # ntpdate
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regularly General support questions including new installations Post Reply Print view Search Advanced search 5 posts • Page 1 of 1 tmyoungjr Posts: 2 Joined: 2010/03/19 16:21:18 Location: Rochester, NY Clock Changes time regularly Quote Postby tmyoungjr » 2010/03/19 16:30:49 I have noticed my system time changes very often. Usually it's only by a minute or two.If i'm watching date I see things like this : $ dateFri Mar 19 12:26:59 EDT 2010$ dateFri Mar 19 12:25:23 EDT 2010$ dateFri Mar 19 12:25:23 EDT 2010$ dateFri Mar 19 12:27:00 EDT 2010$ dateFri Mar 19 12:25:23 EDT 2010I am running ntpd and sync'ing up to a few of the pool.ntp.org poolsCode: Select all$ sudo ntpq -p
Password:
remote refid st t when poll reach delay offset jitter
==============================================================================
+nonce.prolixium 209.51.161.238 2 u - 64 377 52.968 -149102 11.478
+bindcat.fhsu.ed 132.163.4.102 2 u - 64 377 84.190 -149126 36.746
*mirror 204.9.54.119 2 u - 64 377 44.069 -149129 25.113
LOCAL(0) .LOCL. 10 l 37 64 377 0.000 0.000 0.001
[Moderator edit: Insert code tags to preserve formatting]This is Cent 5 with kernel : 2.6.18-164.11.1.el5PAE my log/messages shows : Mar 19 12:16:52 alpha ntpd[4682]: kernel time sync status 0040Mar 19 12:16:54 alpha ntpd[4682]: frequency initialized -18.382 PPM from /var/lib/ntp/driftMar 19 12:21:45 alpha ntpd[4682]: synchronized to LOCAL(0), stratum 10Mar 19 12:22:49 alpha ntpd[4682]: synchronized to 208.53.158.34, stratum 2Mar 19 12:27:05 alpha ntpd[4682]: frequency error -587 PPM exceeds tolerance 500 PPMMar 19 12:28:11 alpha ntpd[4682]: frequency error -1069 PPM exceeds tolerance 500 PPMNow those errors aren't consistent but they do show on occasion. I'm thinking my hardware clock is giving me issues and causing ntpd to have to keep changing the time.This is an AMD Athlon(tm) 64 X2 Dual Core Processor 4600+ machine.Thoughts?Thanks Top pschaff Retired Moderator Posts: 18276 Joined: 2006/12/13 20:15:34 Location: Tidewater, Virginia, North America Contact: Contact pschaff Website Re: Clock Changes time regularly Quote Postby pschaff » 2010/03/19 16:53:20 Welcome to the CentOS fora...Now those errors aren't consistent but they do show on occasion. I'm thinking my hardware clock is giving me issues and causing ntpd to have to keep changing the time.This is an AMD Athlon(tm) 64 X2 Dual Core Processor 4600+ machine.I'd turn off ntpd and let the hardware clock run free for a few hours and compare it against wall-clock