Terje Mathisen wrote in message news:ugut97-uqv2@ntp.tmsw.no...
[]
It would still be limited to the resolution of the rs232 clock, i.e.
~1ms, instead of the ~1us we usually get from PPS receivers.
OTOH, for many users 1-3 ms might be just fine, and statistical
processing might make it
I'm not about this weekend either, so play will recommence sometime next
week. I'ts synching with a collection of uk.pool servers at the mo,
just for the heck of it.
Yes, that was how I started when getting the box working - it proved that
basic NTP and the network were both OK. I actually
On Apr 15, 5:36 pm, unruh wrote:
For ms accuracy you would just need usb for power and serial port, but
work by Lichvar suggests that you cannot just use the serial port if
you
want usec accuracy.
As an aside, even using serial over USB on Windows you can get
millisecond accuracy - no need
I might have some progress on this. More news later. It seems to be
compiling now.
I missed something in the instructions, as you do, when it's late and
the eyes are going.
Regards.
Dave B.
I used copy and paste from my Web browser into the terminal emulator
session!
Cheers,
David
Well..
It compiled and installed OK now! :)
[]
Next step, to spark up NTPD and see if that plays. But that may have to
wait till next week, as I'm away for the weekend now. I already have a
pre configured GPS RX ready to go however.
Thanks everyone for your time and patience.
Dave B.
Hi all again.
I'm still trying to follow the instructions at:-
http://blog.doylenet.net/?p=145
[]
I did have to go back into sysinstall, to download and install the
system sources, but after that, right up to the make buildkernel
command, all had gone as described.
So, what's missing, and
Uwe Klein uwe_klein_habertw...@t-online.de wrote in message
news:iibg97-iiv@klein-habertwedt.de...
[]
There are these nice little USB Adapters available for small money
that provide a 40pin/44pin pata and an sata interface and come with
a fitting powersupply. ( forex : Digitus DA-70148-1 )
Hi.
[]
I was under the impression from prior comments that FreeBSD etc, was
good for older lower power machines. But if you need turbo nutterbuster
PC's to build it in the first place, just to enable PPS
The kettle call's.
Regards.
Dave B
As another datum for you, rebuilding the
Hi
As I had told it during the main OS install, not to enable remote
logins, sshd and all that (as I do not intend to remote admin the thing,
as I have a KVM switch between 4 machines!) I think yet another
protracted full clean install would be needed to do much of that. :(
I do not have
Uwe Klein wrote in message news:4chg97-mj@klein-habertwedt.de...
[]
Thanks, Uwe. Yes, that might have been another approach - I can
imagine a USB DVD drive being quite handy. I haven't seen that
particular device before - very neat! On checking, though, it only
says it supports HDD
I am still confused as to why people recompile their kernel to put in
the kernel PPS. Just use the regular ntp devices like shm and a program
like gpsd to run pps from userland. I have no idea what advantages the
kernel PPS provides, certainly considering the pain of recompiling the
kernel. In
It took a couple of days just to get FreeBSD V8.0 installed correctly in
the first place. One false move (hair trigger enter key) and it's
start over time. (OK, so there are probably ways to backtrack, but
like many things, it's just not documented.)
Agreed. I experimented using a VMware
ntpq -p
remote refid st t when poll reach delay
offset jitter
==
*ntpgmtaceb .1PPS. 1 u 20 64 3770.144
-0.373 0.863
So it's seems to be really better, isn't it?
If that
Dave Baxter s...@goes.nowhere.com wrote in message []
It's the documentation for all this I have trouble with. It's either
next to nothing, or you get links to several generic manual pages or
how to sites, that all say slightly different things. Most confusing
and frustrating when you havent
After one night, the delay is 29.626
remote refid st t when poll reach delay
offset jitter
==
*ntpgmtaceb .1PPS. 1 u 406 1024 377 29.626
0.867 1.231
if I put the line:
server
Rob nom...@example.com wrote in message []
It probably uses Emacs-style key bindings. That can be very frustrated
for users that are not familiar with Emacs. I remember trying to
install
some Linux distribution, I think it was debian, and giving up after
a while for the same reason.
There is
Rob nom...@example.com wrote in message
news:slrnhs9eho.n5.nom...@xs8.xs4all.nl...
[]
Yes, you can add a PPS clock to the NTP configuration via the GUI.
Very impressive!
When you don't have a DVD, you can use a boot cd and install from the
network, or you can boot from the network when you
Rob nom...@example.com wrote in message
[]
Ok, that is good.
When you get an openSUSE 11.2 DVD you can install a system and configure
NTP on it using only the GUI, no need to edit any files.
.. what, even if I want to add a GPS using kernel-mode PPS and change the
servers to suit my system?
Rob nom...@example.com wrote in message
news:slrnhs953g.vh5.nom...@xs8.xs4all.nl...
[]
In many applications, it is more important that all devices within
some environment agree upon the same standard time, than that this
standard time is within a small offset of true atomic time.
However,
Todd Glassey tglas...@glassey.com wrote in message
news:4bc31c47.1000...@glassey.com...
[]
I want to know about non ECC memory based PC's running NTP and how many
NTP errors are caused by single and multi-bit memory errors.
Todd
I am not aware of any. I rather imagine that memory errors in
Neither Phil nor Garmin Support responded yet, so I wanted to ask in
this
group if somebody has these instructions and tools?
With kind regards,
Wolfgang Breyha
I don't have the instructions, I'm afraid, but Garmin UK replaced my
GPS18x LVC within a few days (with a new unit, with firmware
It can also be difficult to buy items from suppliers with no existing
relationship. I.e. it may be easy to buy new computers or supplies, but
difficult to get a GPS receiver from some online shop.
E.g. where I work it is not possible to buy anything from a shop where
creditcard or upfront
Is it still trivial in a below-ground data center? Heck, even a
data center on the ground floor? It wasn't a GPS18x, but I tried
taking a garmin GPS12 into a few machine rooms and had no joy
whatsoever getting any GPS signal.
rick jones
Rick, just for your information, the GPS12 is a rather
pc paul.cro...@softwareag.com wrote in message
news:9d912d64-b725-46a2-bc21-a91070e0c...@z4g2000yqa.googlegroups.com...
Has anybody noticed the first word in cnoyes2's subject line:
Quick ?
NTP can take hours to settle, and is better suited to configurations
where
the computers run 24*7.
How
cnoyes2 cnoy...@gmail.com wrote in message
news:5c674c2c-1bfc-48c9-88a2-816a32c92...@19g2000yqu.googlegroups.com...
I'm trying to sync the time on 2 Windows XP computers that are not on
the internet and never will be. For testing purposes, they need to
have the same time. The time does not need
Folks, I have received the following announcement:
___
The MoD has informed Ofcom of the following GPS jamming exercise:
Dates: 5-15 July 2010.
Times: limited periods between 12:15 and 15:15 hrs.
Location: Airborne at various heights on a
unruh un...@wormhole.physics.ubc.ca wrote in message
news:slrnhpu882.rr5.un...@wormhole.physics.ubc.ca...
[]
I would assume so. It originally came with a plug on the end. That plug
has 6 connections to it. How did your 7 wires connect to that 6 pin
plug?
IIRC, Bill, one of the two wires isn't
Alby goo...@empire.org wrote in message
news:b3ad75d2-08e5-4ac0-9c1f-81ad31174...@g26g2000yqn.googlegroups.com...
[]
I still plan to wire it up to the ground, but I'm just double checking
that I'm not going crazy. Does everybody else
only have 2 Black Wires?
Sensible choice.
Some Garmin
Miroslav Lichvar mlich...@redhat.com wrote in message
news:20100311124036.ga22...@localhost...
[]
I did a NTP vs chrony comparison last June with GPS 18x LVC in an
office environment, clock drift was moving in about 0.8ppm range. Here
are distributions of PPS samples received from gpsd:
Yes, I know it's one of those low long is a piece of string questions, but
I'm now considering a dual-core Intel Atom system, which is Compatible
with Linux according the the very minimal blurb I have right now. If the
system is to be used purely for NTP with Linux as a serial-port GPS/PPS
Uwe Klein uwe_klein_habertw...@t-online.de wrote in message
news:rj2f67-hdj@klein-habertwedt.de...
[]
http://www.pollin.de/shop/dt/ODY5ODkyOTk-/Computer_und_Zubehoer/Hardware/Komplett_Systeme/Mini_Barebone_FOXCONN_R10_S1.html
+ abit of memory and a small SSDisk
uwe
Yes, the price is
Terje Mathisen terje.mathisen at tmsw.no wrote in message
news:d11f67-frf1@ntp.tmsw.no...
[]
http://www.fit-pc.co.uk/meet-fit-pc-2i.html
Seems you need an adapter for the non-standard RS232 port connector?
The price is also significantly higher, but the size is right :-)
Terje
Yes,
Does anyone have any experience with Intel Atom systems as stratum-1
servers from a serial GPS/PPS source? Perhaps using FreeBSD. Is there
anything fundamental in these processors or their chipsets which prevents
full-precision performance being obtained? Any chipsets to avoid?
Thanks,
Terje Mathisen terje.mathisen at tmsw.no wrote in message
news:rved67-cod1@ntp.tmsw.no...
David J Taylor wrote:
Does anyone have any experience with Intel Atom systems as stratum-1
servers from a serial GPS/PPS source? Perhaps using FreeBSD. Is there
anything fundamental in these processors
Kelsey Cummings k...@microshaft.org wrote in message
news:4b8b4844$0$1956$742ec...@news.sonic.net...
David J Taylor wrote:
...
I would knock something up if there were enough interest, but it would
be a Windows program so of limited interest to the OP.
That's the idea anyway. At the time, I
Kelsey Cummings wrote in message
news:4b8c2822$0$1641$742ec...@news.sonic.net...
David J Taylor wrote:
As Bill comments, I hope your milliseconds are actually microseconds!
Yes!
==
oGPS_NMEA(1) .GPS. 0 l
David Lord sn...@lordynet.org wrote in message
news:7ur6r2fac...@mid.individual.net...
[]
Thing is there appears to be a problem with the PPS so
I was suggesting a more sensitive circuit should a scope
or moving coil meter not be available.
David
Isn't there software for the OS which
David Lord sn...@lordynet.org wrote in message
news:7usc5dfhg...@mid.individual.net...
[]
I mentioned radioclkd(2) both of which in debug mode
display state of selected pin (dcd cts dsr or rng).
radioclkd -s poll -d -v ttyS00:dcd
This gives time at each pulse edge.
I'm sure there are other
Is there any other way to watch the signal to see if it's reaching the
serial port correctly?
I would use my 'scope, but even an analogue voltmeter might work - see a
regular flick of the needle. I built the equivalent of a simple break-out
box into my two connections, one in the RS232 DB-9
David Lord sn...@lordynet.org wrote in message
news:7upjodf9s...@mid.individual.net...
[]
I checked pps from MSF rx with digital meter and that showed a
signal but not very well. That has a 50ms pulse so 100ms from
Garmin should be as easy to spot. Analogue meters I have around
would give a
Folks I have received the following announcement..
___
NPL Time Frequency Services
Notice of Interruption to MSF 60 kHz Time and Frequency Signal
The MSF 60 kHz time and frequency signal broadcast from Anthorn Radio
Station will be shut down over the
Kelsey Cummings k...@sonic.net wrote in message
news:4b8580e5$0$1616$742ec...@news.sonic.net...
[]
I'm not sure why it lost sync but I went ahead and upgraded to 4.2.7p5
from the ntp-dev port.
I'm still seeing high offset and variable jitter.
For anyone interested in setting up a Garmin 18 LVC GPS receiver on
FreeBSD 8, I wrote up a fairly detailed tutorial of my experiences
here: http://blog.doylenet.net/?p=145
[]
If there are any comments or errors, please let me know
Cheers
Thanks for doing that, Ryan. I've added a link from
John Ackermann N8UR j...@febo.com wrote in message
news:4b75562a.3010...@febo.com...
[]
BTW -- someone cited a paper showing relativistic effects of a
round-the-world flying clock trip in both directions. That, I believe,
was done with the 5071A. Another great experiment -- done by an
Mabry Tyson wrote in message news:4b74675c.3040...@ai.sri.com...
[]
People might want to look at articles at
http://www.leapsecond.com/history/
(A fun site! )
[]
The site also lists a 1978 article and notes This is the earliest
reference I've found to the relativistic corrections needed
Use the source.
http://tycho.usno.navy.mil/ptti/index9.html
Performance and Results of Portable Clocks in Aircraft; J. C. Hafele
http://tycho.usno.navy.mil/ptti/1971/Vol%2003_17.pdf
Thanks - I loved the discussion at the end!
Cheers,
David
___
xyz-2041 xyz2...@gmail.com wrote in message
news:1ae0f584-2dd7-4244-8a58-0c31df806...@r33g2000yqb.googlegroups.com...
OK. Couldn't get the Oncore unit to work in any way
shape or form. I bought a DB9 LED tester like this:
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItemitem=260546635257
Had
The flying clock tests were closed loop (I think there's a more accurate
term for the process) where the clock, including both its initial time
error and its frequency offset (rate difference from USNO or NIST), was
well characterized via radio and against a set of similar clocks prior
to
Greg Hennessy greg.hennessy@ wrote in message news:It%cn.19853
[]
From the abstract:
Around-the-World Atomic Clocks: Observed Relativistic Time Gains
J. C. Hafele 1 and Richard E. Keating 2
1 Department of Physics, Washington University, St. Louis, Missouri
63130
2 Time Service Division, U.S.
Dave Hart daveh...@gmail.com wrote in message
news:ee10a4f9-ec56-4be1-a068-70170ffbd...@s25g2000prd.googlegroups.com...
On Feb 9, 21:08 UTC, David J Taylor wrote:
Yes, quite a lot of differences. I put together a rather mixed bag of
notes here:
http://www.satsignal.eu/ntp/NTP-on-Windows
Dave Hart daveh...@gmail.com wrote in message
news:683c4b55-7c15-4195-ac5e-223131cf6...@t34g2000prm.googlegroups.com...
[]
No, I make it more confusing. :) Given your requirement that the GPS
will send both RMC and GGA every second, the simple answer is the PPS
is unavailable without
E-Mail Sent to this address will be added to the BlackLists
n...@blacklist.griffin-technologies.invalid wrote in message
news:hku1dk$be...@news.eternal-september.org...
David J Taylor wrote:
When referring to your page:
http://www.davehart.net/ntp/win/x86/
it would be nice of the versions
Dave Hart daveh...@gmail.com wrote in message
news:9c212bbc-94a4-435d-8fdf-590f10ff4...@z10g2000prh.googlegroups.com...
[]
http://www.eecis.udel.edu/~mills/ntp/html/drivers/driver20.html
Fudge Factors
flag1 0 | 1
Disable PPS signal processing if 0 (default); enable PPS signal
processing if 1.
I've setup an NTP server in the south east asia region synchonising
with regional NTP servers as well as a couple of servers I am
responsible for in the US.
remotest t when poll reach delay offset jitter
==
+Japan 1 u 454 1024
cc cjcrick...@googlemail.com wrote in message
news:fc3f6bee-dc69-44ec-8525-0cdac516f...@g28g2000yqh.googlegroups.com...
[]
I wouldn't have thought so either and given that they all trace back
to GPS it isn't likely either but it made me consider the natioanal
security / financial implications
Richard B. Gilbert rgilber...@comcast.net wrote in message
news:nkkdnyae0nzw5-zwnz2dnuvz_uli4...@giganews.com...
David J Taylor wrote:
[]
Most likely asymmetrical paths, yes. To answer your implied question,
it is most /unlikely/ that the USA National Time is 17 milliseconds
away from Japan
I remember the flying of caesium or other atomic clocks round the
world, and that folks had to invoke relativistic corrections. Were
these better than microseconds as well?
Please excuse me if I leave relativistic corrections to the late
Professor Einstein! It's not something I've ever
BK bkrei...@sigmatechcorp.com wrote in message
news:9fb90ed5-1611-4150-8dbb-a420a76c9...@f8g2000vba.googlegroups.com...
[]
It really doesn't matter to me if I install the serialPPS driver or
not. From your discussion it appears using the serialPPS driver is
more accurate than the NMEA driver?
David Lord sn...@lordynet.org wrote in message
news:7t6oaaful...@mid.individual.net...
[]
Now NMEA(0) 92u/6u and PPS(0) 75u/2u, 60 minutes after ntpd restarted.
Config:
pps to lpt0
pps to serial dcd
lpt0 at ppbus
pps0 at ppbus
crw-r--r-- 1 rootwheel 164, 0 Feb 7 01:47
David Lord sn...@lordynet.org wrote in message
news:7t6apef38...@mid.individual.net...
[]
Thanks for that page with the scope traces. It suggests I'm in
right ballpark for fudge time and also confirms same signal
polarity for pps from my MSF receiver.
... a picture is worth a thousand words
David Lord sn...@lordynet.org wrote in message
news:7t3ms3fqe...@mid.individual.net...
[]
Somehow I think I might be in sync with wrong edge of PPS.
Why?
That would put pps out, but I'd have guessed by only 100ms
if that's default.
Yes, David, according to the Technical Specifications
David Lord sn...@lordynet.org wrote in message
news:7t53vhfb3...@mid.individual.net...
[]
A few us isn't bad from PPS unless I'm supposed to use the -350 ms
from nmea via RxD.
Note that the PPS via serial and parallel are both converging to
same 10us and it's only when serial DCD is
David Woolley da...@ex.djwhome.demon.invalid wrote in message
news:hkjre8$7b...@news.eternal-september.org...
David J Taylor wrote:
OK, I mis-read the table. If the 9 microseconds is the true offset,
What do you mean by true offset? That is not actually measurable
As opposed
David Lord sn...@lordynet.org wrote in message
news:7t55hufjj...@mid.individual.net...
David J Taylor wrote:
David Lord sn...@lordynet.org wrote in message
news:7t53vhfb3...@mid.individual.net...
[]
A few us isn't bad from PPS unless I'm supposed to use the -350 ms
from nmea via RxD.
Note
David Lord sn...@lordynet.org wrote in message
news:7t5papf3b...@mid.individual.net...
David J Taylor wrote:
[]
You're confusing me even more here! Is a summary:
1 - PPS connected to DCD (serial) - low offset
2 - PPS connected to DCD (serial) and NACK (parallel) - low offset
3 - GPS
unruh un...@wormhole.physics.ubc.ca wrote in message
news:slrnhmrgjr.e6q.un...@wormhole.physics.ubc.ca...
[]
He said that he had left the GPS18 in its default mode, where much more
than a single sentence is sent out ( about 4 of them if I remember
correctly). He shold probably set it so just
George White aa...@chebucto.ns.ca wrote in message
news:pine.gso.4.64.1001301646190.3...@halifax.chebucto.ns.ca...
[]
I'm not happy about leaving a laptop on 24 hours a day, in any case.
We do it routinely. Laptops are very commonly used to control
instruments and log data on oceanographic
Terje Mathisen terje.mathisen at tmsw.no wrote in message
news:j2sg37-6ja2@ntp.tmsw.no...
[]
My tmsw.dyndns.org S1 server (FreeBSD 8, Garmin 18LVC on the roof) is a
very old Dell Latitude laptop sitting in my (cold) attic.
The hard drive doesn't need to run very often at all, except for
http://plugcomputer.org/plugforum/index.php?PHPSESSID=52733b6b94aef4c469fccaabb98b52e4topic=912.msg6855#msg6855
notjeff: I just recently setup my sheevaplug as a stratum-1 NTP
server.
http://tinyurl.com/yf7684o
Thanks, again. However: The jitter was usually between 1 and 3 ms is
about a
E-Mail Sent to this address will be added to the BlackLists
n...@blacklist.anitech-systems.invalid wrote in message
news:hjnmt9$q9...@news.eternal-september.org...
[]
http://www.marvell.com/platforms/plug_computer/
Thanks for that. Interesting, as it seems that you /may/ be able to get
http://www.veracityuk.com/products/timenet/timenet.php
http://www.veracityusa.com/products/timenet/timenet.php
http://www.gpsntp.com/economic-ntpserver/
Thanks, most interesting - I knew about neither of those products.
http://www.veracityuk.com/products/timenet/timenet.php
Accuracy:
Evandro Menezes evan...@mailinator.com wrote in message
news:b3618b89-24cd-44a9-8e25-78887d18e...@f12g2000yqn.googlegroups.com...
On Jan 21, 2:52 pm, David J Taylor david-tay...@blueyonder.delete-
this-bit.and-this-part.co.uk.invalid wrote:
BTW: I still have systems running which are older
Uwe Klein uwe_klein_habertw...@t-online.de wrote in message
news:r91037-grd@klein-habertwedt.de...
David J Taylor wrote:
[]
I would still very much like to have a low-powered (watts) system
running NTP perhaps with a good (for timekeeping) FreeBSD version.
Something the size of a home
Richard B. Gilbert rgilber...@comcast.net wrote in message
news:yeedncqvudbjkcdwnz2dnuvz_g6dn...@giganews.com...
[]
I think that that the closest you can come off the shelf would be a
Laptop. You are not likely to find one in that price range.
I'm not happy about leaving a laptop on 24 hours
Richard B. Gilbert rgilber...@comcast.net wrote in message
news:e-odnz0opzrljsdwnz2dnuvz_tgdn...@giganews.com...
[]
Routers usually do not make good GPS clocks! If they are functioning as
routers they have work to do and time keeping is not a priority.
Indeed! I was thinking of the router
David Lord sn...@lordynet.org wrote in message
news:7s5qdof6l...@mid.individual.net...
[]
Not yet using this but have a 20 quid+vat router type board here
from Omnima.co.uk that has ADM5120P chip, wan + 4xlan ethernet,
2xusb but serial need some wiring. Will run Linux and can be
supplied with
I doubt the problem may be due to a different time sync program running
since the problem occurs if and only if the MM timer tick rate is
changed.
Martin
Agreed, Martin. Just clutching at straws with all the things I have seen
which can cause problems on Windows. Thanks also for your
Martin Burnicki martin.burni...@meinberg.de wrote in message
news:mp2m27-dp3@gateway.py.meinberg.de...
[]
AFAIK if the TSC is used then the clock frequency reported for QPC
matches
the CPU's clock full clock frequency, and IIRC then according to some MS
docs the reported frequency does not
Windows chooses the most precise, invariant frequency source available
in the system. As I said before, Intel's Core2 processors have a TSC
that doesn't vary with the CPU clock (though its precision is not as
good as it seems). Only newer AMD processors sport the same feature
and even then it
Alan,
I hope you get this fixed. Here's what you can get with XP with the MM
timer enabled:
Windows XP LAN-synched to a stratum-1 server, 32s poll for local servers,
1024s poll for Internet backup servers:
http://www.satsignal.eu/mrtg/narvik_ntp-b.html
Windows XP acting as a stratum-1
Alan greig...@netscape.net wrote in message
news:z9i5n.58805$q36.5...@newsfe19.ams2...
Would like to get to the bottom of this as well. Using 4.4.6-o with -M ,
I get Frequency error 3030 PPM exceeds tolerance 500 PPM. Considering
that without =M the frequency modification is only about 5 PPM
David Woolley da...@ex.djwhome.demon.invalid wrote in message
news:hio50t$4b...@news.eternal-september.org...
[]
All bets are off for Windows.
I've never seen Windows have a two-hour error. It syncs at startup
providing the -g command-line option is used.
Cheers,
David
Hassan hbdive...@gmail.com wrote in message
news:6cbc9a0c-400a-4e35-b10e-6a1cb463d...@a15g2000yqm.googlegroups.com...
[]
On the other hand, I can't connect to the bugs list ?
The browser says that connection is not certified or something
alike ! (the warning is in french, and I don't know if
Hassan wrote in message
news:cce8a7cb-d63b-4f10-aa46-4083fe684...@p8g2000yqb.googlegroups.com...
Hello everybody,
I can't compile ntp-4.2.6 for windows.
[]
Thank you in advance.
I can't help you directly, I wish I could, but if it helps the
read-compiled binaries for Windows are available
unruh un...@wormhole.physics.ubc.ca wrote in message
news:slrnhjkta6.4e4.un...@wormhole.physics.ubc.ca...
ntpd has suddenly broken out into oscillations. it is fed by a Garmin
18 LVC PPS via shm. The oscillation has a period of just under an hour (
about 50 min) and an amplitude of about 10usec.
unruh un...@wormhole.physics.ubc.ca wrote in message
news:slrnhjfdes.skf.un...@wormhole.physics.ubc.ca...
Suddenly my system, connected to a gps source (GPS18lvc) has a much
larger standard deviation than before, and ntp is oscillating ( the rate
oscillates about once an hour with a .01PPM
unruh un...@wormhole.physics.ubc.ca wrote in message
news:slrnhj4u3f.u1s.un...@wormhole.physics.ubc.ca...
[]
??? The code is NOT available on ntpd. It would require a large coding
job to impliment the chrony algorithm into ntpd and if you knew that
your one year worth of work would never ever
unruh un...@wormhole.physics.ubc.ca wrote in message
news:slrnhj7qd9.3p4.un...@wormhole.physics.ubc.ca...
[]
Why not take a different approach, then? Start with chrony to make the
system rapidly stable, and then turn control over to NTP. Is something
like that possible?
Why not just stick
David Woolley da...@ex.djwhome.demon.invalid wrote in message
news:hgrj64$d1...@news.eternal-september.org...
David J Taylor wrote:
I do wish there were some way of speeding this up - a variable loop
bandwidth or something like that.
It already does have one, and has had one since
unruh un...@wormhole.physics.ubc.ca wrote in message
news:slrnhj3at2.i10.un...@wormhole.physics.ubc.ca...
[]
ntp will eventually settle to within a millisecond.
You can help by running it with the -g option, and apparently without a
ntp.drift file (It a) steps to within 1/8 of a sec, and
xyz-2041 xyz2...@gmail.com wrote in message
news:3e8fc6d9-d4e2-4eb8-8bc8-bb005f916...@d20g2000yqh.googlegroups.com...
[]
How would I check on FreeBSD?
My FreeBSD notes - from some years ago - are here:
http://www.satsignal.eu/ntp/FreeBSD-GPS-PPS.htm
If they help, great, if not I can't help
G8KBV g8...@nospam-uko2.co.uk wrote in message
news:mpg.2599f4f8b90958d1989...@news.demon.co.uk...
[]
Phew!...
So it looks like it is working at it's best anyway, excelent.
Yes, it's good news!
I can (as a small time programmer with Delphi) appreciate the complexity
of all this, in
Dave Hart daveh...@gmail.com wrote in message
news:b6255676-5045-432e-9979-aca722a7d...@u1g2000pre.googlegroups.com...
[]
Yes, there is an issue with the messages coming from entirely separate
components. Moreover, as I have just said, the presence of user-mode
PPS timestamps (replacing
Richard B. Gilbert wrote in message
news:zjydnvuvufm1wa3wnz2dnuvz_h2dn...@giganews.com...
[]
You will find that for the best performance, the NTP PC needs to be
left running, as initial settling is not quick.
Not quick is an extreme understatement! It takes about 30 minutes to
get a
Richard B. Gilbert wrote in message
news:wfkdnrhdnr8nvazwnz2dnuvz_judn...@giganews.com...
unruh wrote:
[]
Nonsense. chrony does it, without loss of accuracy (chrony is about 3
times as accurate as ntp is) or stability. It will correct a few
hundred
second initial error in far less time
Richard B. Gilbert rgilber...@comcast.net wrote in message
news:xrodnugqk7mhs6zwnz2dnuvz_usdn...@giganews.com...
[]
Anyone who thinks he can boot up, get the correct time to within
microseconds and shut down again is living in a dream world!
Windows is a poor choice of O/S for the job. Try
Hi again...
OK, I've got everything as it should be, but...
I see in the companion registry entry, for the 'serenum' key, that the
ImagePath type is indeed REG_EXPAND_SZ, where as in the 'serial' key,
the ImagePath is just REG_SZ.
I've tried all sorts in there, resulting in either no
G8KBV g8...@nospam-uko2.co.uk wrote in message
news:mpg.2599839da78d9afe989...@news.demon.co.uk...
[]
Thanks for the reg file, I'll try it.
Noted on your results.
I'm running on Win2000 Pro, not XP btw. (though they are similar behind
the shiny bits.) I don't think there is any driver
Dave Hart daveh...@gmail.com wrote in message
news:b0496413-c034-4be1-9d51-2028b8d8f...@y32g2000prd.googlegroups.com...
[]
Further, despite the fact that this thread started out with you asking
what the 'o' meant in the ntpq peers billboard, which indicates
working PPSAPI (and hence working
Harlan Stenn st...@ntp.org wrote in message
news:ywn9skb612pt@ntp1.isc.org...
Does http://support.ntp.org/Support/TroubleshootingNTP#Section_9.4. have
the
information you are looking for?
That's an excellent start, Harlan, but it leaves me with a little
confusion
* the source you
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