Re: [ntp:questions] Another invalid leap second
Chris Adams c...@cmadams.net writes: remote refid st t when poll reach delay offset jitter == -216.180.99.1152.2.21.1 3 u 75 128 3778.750 -3.704 2.198 -216.180.122.1 173.255.232.93 3 u 100 128 377 10.6931.763 2.047 *198.58.100.237 216.218.254.202 2 u 112 128 377 33.1760.153 2.465 +199.195.193.200 203.117.180.36 2 u 61 128 377 271.8177.875 22.267 +66.162.15.6564.236.96.53 2 u 105 128 377 25.8807.921 4.795 -50.116.38.157 130.207.244.240 2 u 88 128 377 23.243 -2.734 1.810 127.127.8.0 .GPS.0 l 392 1600.0001.016 0.000 x127.127.22.0.GPS.0 l2 16 3770.000 -4.524 0.684 Unfortunately, there isn't much overlap between the servers I'm monitoring and the servers you're using, so I can't add much. From the refids, I have info for machines in UNC, gatech and he.net, and none of them were advertising leap seconds. David. ___ questions mailing list questions@lists.ntp.org http://lists.ntp.org/listinfo/questions
Re: [ntp:questions] Another invalid leap second
On 03/07/2013 20:49, unruh wrote: [] http://www.satsignal.eu/mrtg/stamsund_ntp_40.html OK. looks like about an 8us standard deviation, which is not bad. strange that it would have drifted by about that over the past few months. The spread is at about what I get for stratum 2 chrony machines on my network fed off a stratum 1 gps driven chrony machine. The drift down over months is actually an artefact of using MRTG to record very low numbers, not in the actual recorded offset, sigh! -- Cheers, David Web: http://www.satsignal.eu ___ questions mailing list questions@lists.ntp.org http://lists.ntp.org/listinfo/questions
Re: [ntp:questions] Another invalid leap second
Once upon a time, unruh un...@invalid.ca said: I think we need to know who the OP has as his ntp servers. And if it is pool, whether he can reconstruct who he was using (peers log file?) should windows ports even be allowed in the pool given their lousy behaviour as time machines. I have configured tick/tock.hiwaay.net and 0/1/2/3.us.pool.ntp.org, plus my local GPS (which due to sub-optimal antenna placement and crappy weather has no signal right now, although the PPS is still ticking). I haven't restarted ntpd in a while (since May 31); so this should be the same peers I had at the leap second: remote refid st t when poll reach delay offset jitter == -216.180.99.1152.2.21.1 3 u 75 128 3778.750 -3.704 2.198 -216.180.122.1 173.255.232.93 3 u 100 128 377 10.6931.763 2.047 *198.58.100.237 216.218.254.202 2 u 112 128 377 33.1760.153 2.465 +199.195.193.200 203.117.180.36 2 u 61 128 377 271.8177.875 22.267 +66.162.15.6564.236.96.53 2 u 105 128 377 25.8807.921 4.795 -50.116.38.157 130.207.244.240 2 u 88 128 377 23.243 -2.734 1.810 127.127.8.0 .GPS.0 l 392 1600.0001.016 0.000 x127.127.22.0.GPS.0 l2 16 3770.000 -4.524 0.684 -- Chris Adams cmad...@cmadams.net ___ questions mailing list questions@lists.ntp.org http://lists.ntp.org/listinfo/questions
Re: [ntp:questions] Another invalid leap second
On 05/07/2013 04:07, Chris Adams wrote: I have configured tick/tock.hiwaay.net and 0/1/2/3.us.pool.ntp.org, plus my local GPS (which due to sub-optimal antenna placement and crappy weather has no signal right now, although the PPS is still ticking). I haven't restarted ntpd in a while (since May 31); so this should be the same peers I had at the leap second: [] Chris, just one small point, you can replace the four individual pool server statements with a single line: pool us.pool.ntp.org iburst It may make your configuration file neater, and NTP will automatically select the most appropriate number of pool servers. See: http://www.satsignal.eu/ntp/setup.html#pool Can't help further with the leap-second, other than the tool I've already offered. -- Cheers, David Web: http://www.satsignal.eu ___ questions mailing list questions@lists.ntp.org http://lists.ntp.org/listinfo/questions
Re: [ntp:questions] Another invalid leap second
Chris Adams c...@cmadams.net writes: I have a Linux (Fedora 18) system running ntp-4.2.6p5-8.fc18.x86_64. I have a GPS receiver connected (old Trimble SVeeSix in TSIP mode). I have some pool servers plus my ISPs servers configured. After some discussion on a mailing list, I checked, and I got a leap second Sunday. I see this in my log (my local time is CDT, UTC-0500): I've been monitoring the leap second advertisment on a bunch of NTP servers for the last few years. I've plotted some of the results at: http://www.maths.tcd.ie/~dwmalone/time/leaps/ If you let me know the list of peers/servers you're using, then I could see if any are in the list I'm monitoring, and if they were advertising a leap. David. ___ questions mailing list questions@lists.ntp.org http://lists.ntp.org/listinfo/questions
Re: [ntp:questions] Another invalid leap second
On 2013-07-03, E-Mail Sent to this address will be added to the BlackLists Null@BlackList.Anitech-Systems.invalid wrote: BlackLists wrote: Chris Adams wrote: discussion on a mailing list, I checked, and I got a leap second Sunday. Jun 30 18:59:59 disk kernel: [2575160.498722] Clock: inserting leap second 23:59:60 UTC Where did the leap second come from? A bogus leap second happened last year too, supposedly less were guilty this year. http://www.maths.tcd.ie/~dwmalone/time/leaps/ Perhaps last years cause was in the windows port of ntp? http://bugs.ntp.org/show_bug.cgi?id=2159 I think we need to know who the OP has as his ntp servers. And if it is pool, whether he can reconstruct who he was using (peers log file?) should windows ports even be allowed in the pool given their lousy behaviour as time machines. ___ questions mailing list questions@lists.ntp.org http://lists.ntp.org/listinfo/questions
Re: [ntp:questions] Another invalid leap second
unruh wrote: should windows ports even be allowed in the pool given their lousy behaviour as time machines. (Shrug) The pool allows for stratum 4 servers; Windows PCs probably reach the level of expectation most would have for S4 servers. -- E-Mail Sent to this address blackl...@anitech-systems.com will be added to the BlackLists. ___ questions mailing list questions@lists.ntp.org http://lists.ntp.org/listinfo/questions
Re: [ntp:questions] Another invalid leap second
On 03/07/2013 15:44, unruh wrote: [] I think we need to know who the OP has as his ntp servers. And if it is pool, whether he can reconstruct who he was using (peers log file?) should windows ports even be allowed in the pool given their lousy behaviour as time machines. Windows-8 allows you to make quite reasonable stratum-1 servers (and earlier versions are not too bad either with the various enhancements made by Dave Hart and others). Here's the offset for one Windows-8 system: http://www.satsignal.eu/mrtg/stamsund_ntp_2.html and with a greater resolution: http://www.satsignal.eu/mrtg/stamsund_ntp_40.html More than good enough for serving others across the Internet, even if not up to FreeBSD or Linux capabilities, and /much/ better than stratum-2 or higher servers. -- Cheers, David Web: http://www.satsignal.eu ___ questions mailing list questions@lists.ntp.org http://lists.ntp.org/listinfo/questions
[ntp:questions] Another invalid leap second
I have a Linux (Fedora 18) system running ntp-4.2.6p5-8.fc18.x86_64. I have a GPS receiver connected (old Trimble SVeeSix in TSIP mode). I have some pool servers plus my ISPs servers configured. After some discussion on a mailing list, I checked, and I got a leap second Sunday. I see this in my log (my local time is CDT, UTC-0500): Jun 30 03:03:04 disk ntpd[1150]: 0.0.0.0 411a 0a leap_disarmed Jun 30 03:04:40 disk ntpd[1150]: 0.0.0.0 412a 0a leap_disarmed Jun 30 18:59:59 disk kernel: [2575160.498722] Clock: inserting leap second 23:59:60 UTC Jun 30 19:05:48 disk ntpd[1150]: 0.0.0.0 4118 08 no_sys_peer Jun 30 19:06:23 disk ntpd[1150]: 0.0.0.0 4413 03 spike_detect +0.996853 s Jun 30 19:15:26 disk ntpd[1150]: 0.0.0.0 441c 0c clock_step +0.59 s Jun 30 19:15:26 disk ntpd[1150]: 0.0.0.0 4415 05 clock_sync Jun 30 19:15:27 disk ntpd[1150]: 0.0.0.0 c418 08 no_sys_peer Where did the leap second come from? -- Chris Adams c...@cmadams.net ___ questions mailing list questions@lists.ntp.org http://lists.ntp.org/listinfo/questions
Re: [ntp:questions] Another invalid leap second
On 7/2/2013 5:55 PM, Chris Adams wrote: Where did the leap second come from? There is traffic on NANOG about it--I didn't grok the details but I understood there are patches out for it. -- Idioten aangeboden. Gratis af te halen. h/t Dagelijkse Standaard ___ questions mailing list questions@lists.ntp.org http://lists.ntp.org/listinfo/questions
Re: [ntp:questions] Another invalid leap second
Chris Adams wrote:
I have a Linux (Fedora 18) system running ntp-4.2.6p5-8.fc18.x86_64. I
have a GPS receiver connected (old Trimble SVeeSix in TSIP mode). I
have some pool servers plus my ISPs servers configured. After some
discussion on a mailing list, I checked, and I got a leap second Sunday.
I see this in my log (my local time is CDT, UTC-0500):
Jun 30 03:04:40 disk ntpd[1150]: 0.0.0.0 412a 0a leap_disarmed
Jun 30 18:59:59 disk kernel: [2575160.498722] Clock: inserting leap second
23:59:60 UTC
Where did the leap second come from?
Either a file on your PC, or updtream ntp servers you use?
Probably some Linux machine running a ancient version of NTP
for no _good_ reason, as they so often do.
I love policies that won't let you run the current version,
that has hundreds (thousands ?) more bugs fixed over the last decade,
than the version that is in a distro,
and policy won't let it be replaced, removed, or fixed.
{Tough cookies to IT fossils that can't adapt.}
I see Fedora 18 is using ntp 4.2.6p5 which is the current stable (2011Dec)
http://mailman.nanog.org/pipermail/nanog/2013-July/subject.html#start
A bogus leap second happened last year too,
supposedly less were guilty this year.
http://www.maths.tcd.ie/~dwmalone/time/leaps/
2013Jun30 was the next time slot to add one if it was needed,
however none was officially added.
http://www.usno.navy.mil/USNO/earth-orientation/leap-second-announcement
Block Quote Leap Second Announcement
Important Announcement
No leap second will be introduced at the end of June 2013.
The last leap second was positive and was introduced in UTC at the end of June
2012.
IERS Bulletin C (Current Leap Second Announcement)
/ Block Quote
The most recent file, can be found at:
ftp://time.nist.gov/pub/
ftp://tycho.usno.navy.mil/pub/ntp/
NTP leap second bugs:
http://bugs.ntp.org/buglist.cgi?content=leapproduct=ntporder=bug_id%20DESC
--
E-Mail Sent to this address blackl...@anitech-systems.com
will be added to the BlackLists.
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Re: [ntp:questions] Another invalid leap second
BlackLists wrote: Chris Adams wrote: discussion on a mailing list, I checked, and I got a leap second Sunday. Jun 30 18:59:59 disk kernel: [2575160.498722] Clock: inserting leap second 23:59:60 UTC Where did the leap second come from? A bogus leap second happened last year too, supposedly less were guilty this year. http://www.maths.tcd.ie/~dwmalone/time/leaps/ Perhaps last years cause was in the windows port of ntp? http://bugs.ntp.org/show_bug.cgi?id=2159 -- E-Mail Sent to this address blackl...@anitech-systems.com will be added to the BlackLists. ___ questions mailing list questions@lists.ntp.org http://lists.ntp.org/listinfo/questions
Re: [ntp:questions] Another invalid leap second
If ntp has a valid and up to date leap file configured in ntp.conf are rogue leap announcements disregarded? ___ questions mailing list questions@lists.ntp.org http://lists.ntp.org/listinfo/questions
