et : +0.04646 seconds
RMS offset : 0.05560 seconds
Frequency : 30.482 ppm fast
Residual freq : +0.004 ppm
Skew: 0.082 ppm
Root delay : 0.000237 seconds
Root dispersion : 0.94 seconds
Update interval : 16.2 seconds
Leap status : Normal
Any help appreciat
Thanks for clearing that up Miroslav. Makes sense to me now. I am working on a
Mac OS program that will graph the logs and was having trouble reconciling the
values.
> On 21/07/2015, at 11:19 pm, Miroslav Lichvar wrote:
>
> On Tue, Jul 21, 2015 at 08:23:10AM +1200, Bryan Christian
ta / tickdelta * tickdelta;
> 144 newadj.tv_sec = 0;
> 145 newadj.tv_usec = (int)delta;
This section of code has been removed in git and adjustment is now calculated
differently.
Regards
Bryan Christianson
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I have made the first (beta) release of ChronyControl available for download.
It requires a minimum of MacOS 10.10 (yosemite).
Details for download and installation are at
http://whatroute.net/chronycontrol.html
Please let me know if you find any fiction on the web page.
Regards
Bryan
> On 7/10/2015, at 4:07 AM, Deven Hickingbotham wrote:
>
> I'm looking for guidance on installing Chrony on a Raspberry Pi running
> Raspbian. I have the Ultimate GPS Hat installed that provides PPS on pin 4.
> I will have only intermittent internet connections, so the PPS should be the
> p
, so I have to parse
> the precision and convert that to be all in one precision. I haven't seen
> much documentation on the protocol between chronyc and chronyd.
Take a look at the chronyd log files. The data is more amenable to machine
reading than the chronyc output.
>
>
I’ve released ChronyControl-1.1.2 for OS X (Mavericks, Yosemite, El Capitan)
This version has crony-2.3 embedded
Download from https://www.whatroute.net/chronycontrol.html
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with
present) is from the kernel PPS_LDISC
# module. It includes PPS and will be accurate to a few ns
refclock SHM 1 offset 0.00135 delay 0.1 refid PPS
# SOCK protocol also includes PPS data and
# it also provides time within a few ns
refclock SOCK /var/run/chrony.ttyUSB0.sock offset 0.00135 delay 0
So SHM0 does show up. Still question the use of chrony.ttyAMA0.sock?
>
> Deven
>
OK _ are you stopping gpsd, restarting chronyd then restarting gpsd? Order
matters (well it used to anyway)
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and start them manually in
the correct order. The default systemd dependencies are wrong or maybe
non-existent - who knows with that piece of awfulness - and I don’t want to
spend the time investigating
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> On 19/02/2016, at 4:41 PM, Tomalak Geret'kal wrote:
>
> On 19/02/2016 03:08, Bryan Christianson wrote:
>> My understanding is that chrony.ttyAMA0.sock is a socket created by chronyd
>> and listened to by chronyd When gpsd starts, it checks to see if the socket
&g
of chronic every few
seconds and this seems like a lot of overhead.
Would it be possible to add an optional argument to the internal chronyc
commands to have them also return CSV format? Optionally JSON and XML would be
nice formats as well.
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worth the extra
> code.
Its semantically better - means the client code is not dependent on the field
order but can just do lookup by name once the data is loaded. Anyway - its not
essential, so up to you.
Thanks
B
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f very small floating-point numbers in command packets
>
> Removed features
>
> * Drop documentation in Texinfo format
>
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wit
thought.
Bryan
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> On 28/05/2016, at 9:56 AM, Bill Unruh wrote:
>
> On Sat, 28 May 2016, Bryan Christianson wrote:
>
>> I recently installed an IPv6 network on my lan. When crony syncs to a server
>> using IPv6 it extracts some bits from the IPv6 address of the server and
>
s.ubc.ca
> Canada V6T 1Z1 | and Gravity | www.theory.physics.ubc.ca/
>
> On Sat, 28 May 2016, Bryan Christianson wrote:
>>
>>> This has been argued in the past. The refid is 4 bytes, so it cannot fit in
>>> the whole IPv6 address. And it really is not w
> On 30/05/2016, at 7:22 PM, Miroslav Lichvar wrote:
>
> On Sat, May 28, 2016 at 10:17:31AM +1200, Bryan Christianson wrote:
>>
>> Maybe it could just be displayed as 8 hex digits.
>
> I think that would be the best solution. I was considering to use
> the MAC
> On 30/05/2016, at 11:39 PM, Miroslav Lichvar wrote:
>
> On Mon, May 30, 2016 at 10:55:31PM +1200, Bryan Christianson wrote:
>> I like the MAC-style format too. Even without IPv6 we have the ambiguity
>> associated with reference clocks
>> e.g.
>> Re
ChronyControl for OSX has been updated to include chrony-2.4
Download from http://whatroute.net/chronycontrol.html
> On 7/06/2016, at 9:55 PM, Miroslav Lichvar wrote:
>
> The final release of chrony-2.4 is now available.
>
Bryan Christianson
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Then maybe start gpsd in
> debug -D 8 and see if its writing to that chrony socket. Strace will show
> what's happening underneath.
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config and resource use is
significantly better.
What are the disadvantages of using a non-random port? Security is my first
guess (i.e. I have opened up a listening port for use as an attack surface) but
are there any other disadvantages?
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> On 10/08/2016, at 10:27 PM, Miroslav Lichvar wrote:
>
> On Wed, Aug 10, 2016 at 08:04:20PM +1200, Bryan Christianson wrote:
>> I have been observing chronyd with a profiler (Apple Instruments - gui to
>> dtrace) and noticed that open/close operations on the client socket
network activity associated with processes and
chronyd looks a little stark with just its name and no image.
I have absolutely no talent in designing icons, hence the request.
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with
Download from https://www.whatroute.net/chronycontrol.html
Changes:
Embedded chrony 2.4.1
Build with Swift 3, Xcode 8.1
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For help em
> On 22/11/2016, at 2:23 AM, Miroslav Lichvar wrote:
>
> On Tue, Nov 22, 2016 at 02:18:22AM +1300, Bryan Christianson wrote:
>> Download from https://www.whatroute.net/chronycontrol.html
>>
>> Changes:
>> Embedded chrony 2.4.1
>> Build with Swift 3, Xcod
the subject.
> For help email chrony-users-requ...@chrony.tuxfamily.org
> with "help" in the subject.
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>
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some people.
>
> I'd like to make a 3.2 prerelease today. I have a "bugfix" commit for
> this in my git. We can revisit this before the final release.
That would be good. Still nothing from Apple on fixing adjtime() but hopefully
they will get to it soon.
ALSO
date(1), settimeofday(2), adjtime(2), gettimeofday(2), launchd(8)
HISTORY
This timed first appeared in Mac OS X 10.13 and iOS 5.0.
Darwin January 26, 2016 Darwin
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> On 26/07/2017, at 10:37 AM, Bryan Christianson wrote:
>
> I was just looking through macOS 10.13, wondering why ntpd was not running.
> Apple seem to have got rid of it and are now using something called timed.
> I don't know anything at all about it, other than its run
ofday().
And I expect you are right about not using chrony because of the GPL. They
claim timed has power saving features, probably based on what they did with
ntpd.
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> On 26/07/2017, at 6:50 PM, Bryan Christianson wrote:
>
>
>> On 26/07/2017, at 6:38 PM, Miroslav Lichvar wrote:
>>
>> Interesting. Do you have a packet capture you could share?
>
> I didn't think to keep a copy of the packet trace. From a cursory in
ts. timed will continue to run but fail in its
attempts to get valid NTP responses. Its ugly, but it seems to work.
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For hel
een no NTP server at that address,
the packets still had to hit the routers before they were dropped/rejected. If
the device vendor had used DNS then their wouldn't have been a problem for the
operator of the server.
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; The source code can be downloaded here:
> https://download.tuxfamily.org/chrony/chrony-3.4.tar.gz
>
> MD5 and SHA1 sums:
> 7170e750469c198fc6784047d6f71144 chrony-3.4.tar.gz
> fa41e595e7041a9deda76a69e970a023091474f6 chrony-3.4.tar.gz
>
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> Miroslav Lichvar
Brya
P time
Last offset : -0.00509 seconds
RMS offset : 0.01911 seconds
Frequency : 0.186 ppm slow
Residual freq : -0.001 ppm
Skew: 0.046 ppm
Root delay : 0.000415433 seconds
Root dispersion : 0.25371 seconds
Update interval : 8.1 seconds
Leap status : Normal
t the nic in the RPi doesn't seem to support the
coalesce options of ethtool with Debian Stretch.
As you say there may be better h/ware for the job, but the RPi/Uputronics combo
is an inexpensive, and also well documented, way of getting very good
timekeeping on a small LAN.
B
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ve you +/- 10usecs precision.
Cost and available power might be a factor for your application though.
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For help email
I might expect?
If I do this while chronyd is running will it cause any problems with the
running instance?
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For help email chrony-
Thank you Miroslav
> On 9/03/2020, at 9:03 PM, Miroslav Lichvar wrote:
>
> On Mon, Mar 09, 2020 at 09:38:35AM +1300, Bryan Christianson wrote:
>> I would like to check the chrony.conf file for syntax errors before
>> replacing the working copy of the file
>
> There
chrony.conf with:
> server time.cloudflare.com nts ntsport 1234 iburst
>
> server nts.ntp.se nts ntsport 4443 iburst
>
&
t;
Thank you very much for the update. Glad to know it's not my setup/firewall etc.
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t; Miroslav Lichvar
That has fixed my problem with time.cloudflare.com
As I expected, nts.ntp.se is now broken, but I guess that server will also be
updated to the new draft in the near future.
Bryan
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Thanks Miroslav
> On 21/04/2020, at 1:01 AM, Miroslav Lichvar wrote:
>
> I was just told the Netnod servers will run the updated NTS-KE service
> on a different port. Try changing ntsport to 3443.
Confirming that it's good on macOS with port 3443
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have submitted a 'Feedback' report to Apple about this, but they are
notoriously unresponsive. If anyone on the list is able to suggest a workaround
I'd be most grateful.
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wi
encapsulator to derive the timestamps for the transport stream. Once the
transport stream has left the ASI interface you have no controller over the
transmission latency.
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ChronyControl 1.4.1 which can be downloaded from
https://whatroute.net/chronycontrol.html
I don't have an Apple Silicon machine, so that is completely untested. I would
be really interested in feedback from anyone who does try it tho, success or
fail.
Thanks, Bryan
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servers that are known to be ok, (eg
pool.ntp.org) if you are not doing that already. You have not said anything
about the servers you are currently using. i.e are they LAN devices or over the
internet?
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ss IPV6:ADDR:ESS::5
> server 0.pool.ntp.org
> server 1.pool.ntp.org
> server 2.pool.ntp.org
> server 3.pool.ntp.org
>
Try it with the bind* directives commented out
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available for download from
https://whatroute.net/chronycontrol.html
Thank you Miroslav for all your work in putting chrony-4.1 together.
Bryan
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something to be concerned about?
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I have posted the daemon, chronywake, at https://github.com/bryanc-nz/chronywake
> On 13/06/2021, at 12:02 PM, David Bohman wrote:
>
> Will this be a standalone project, or will it be part of chrony?
>
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between H
> and the internet.
NTP is a UDP protocol. Is your firewall open for UDP port 123 at both client
and server?
>
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F
ill be used
by the pps refclock to give a timestamp to the pps readings but will not
participate in setting the clock.
I hope that helps.
Regards, Bryan
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ths) during which one server drifted
> out synch by more than 30 seconds. Is there a configuration in chrony.conf
> to complain when the time server is not reachable? If there is, why isn’t
> that the default behavior?
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