David Woolley wrote: > Dave wrote: >> Looking at the logs on my Sun Blade 2000 running Solaris 10, I see >> numerous occasions on which the time has been stepped. Looking at the >> few only (today, 1/5/2008), I see it was stepped around +0.3 sec at 3 >> AM, then -0.4 at 4:30 am, then half an hour later at 5am it was moved >> -0.6 sec, then 40 minutes later it is moved another -0.6 sec. Since >> then (its now 1:30 pm), it has not changed. > > Positive and negative steps which approximately balance each other > indicate a heavily loaded link with variable and asymmetric propagation > delays. Apart from local servers, or your Rubidium PPS, or reducing the > traffic, the other solutions are to apply and get the ISP to apply > traffic shaping to prioritise NTP traffic, or to use the tinker huff and > puff option, noting the health warnings attached to it.
I've changed to local servers as suggested server 0.uk.pool.ntp.org server 1.uk.pool.ntp.org server 2.uk.pool.ntp.org server 3.uk.pool.ntp.org broadcast 224.0.1.1 ttl 0 statistics loopstats statistics peerstats driftfile /var/ntp/ntp.drift statsdir /var/ntp/ntpstats/ logconfig =all and it has made no significnat difference. (I've just added the lines statistics loopstats statistics peerstats but these were not in the config file when I collected this data. May 6 06:11:09 kestrel xntpd[3604]: [ID 774427 daemon.notice] time reset (step) 0.224887 s May 6 06:38:22 kestrel xntpd[3604]: [ID 774427 daemon.notice] time reset (step) 0.669705 s May 6 07:18:42 kestrel xntpd[3604]: [ID 774427 daemon.notice] time reset (step) 0.253622 s May 6 07:47:00 kestrel xntpd[3604]: [ID 774427 daemon.notice] time reset (step) 0.405924 s May 6 08:39:43 kestrel xntpd[3604]: [ID 774427 daemon.notice] time reset (step) -0.277034 s May 6 09:13:53 kestrel xntpd[3604]: [ID 774427 daemon.notice] time reset (step) 0.144278 s May 6 11:10:18 kestrel xntpd[3604]: [ID 774427 daemon.notice] time reset (step) 0.487560 s May 6 13:58:14 kestrel xntpd[3604]: [ID 774427 daemon.notice] time reset (step) 0.150888 s May 6 15:02:22 kestrel xntpd[3604]: [ID 774427 daemon.notice] time reset (step) -0.243454 s May 6 16:03:35 kestrel xntpd[3604]: [ID 774427 daemon.notice] time reset (step) -0.284934 s May 6 21:35:00 kestrel xntpd[3604]: [ID 774427 daemon.notice] time reset (step) -0.369864 s May 6 22:39:50 kestrel xntpd[3604]: [ID 774427 daemon.notice] time reset (step) -0.396888 s After added the lines statistics loopstats statistics peerstats I stopped and started the deamon (I guess refreshing might do), and get: May 7 08:35:14 kestrel ntpdate[24721]: [ID 558275 daemon.notice] adjust time server 78.129.142.80 offset -0.002180 sec _______________________________________________ questions mailing list [email protected] https://lists.ntp.org/mailman/listinfo/questions
