What about item 73: ??
-Original Message-
From: questions-bounces+edward.mischanko=arcelormittal@lists.ntp.org
[mailto:questions-bounces+edward.mischanko=arcelormittal@lists.ntp.org] On
Behalf Of rajputaja...@gmail.com
Sent: Thursday, February 13, 2014 5:12 AM
To:
David,
It appears that you may misunderstand my observation? Raspberry-Pi servers
seem to be economical and functional as NTP servers, but how well do they work
in the network configuration that I am using. Yes, there are things that I can
do to have a more accurate server; but how well
Yes, it is strange. My point as a software tester, and user, is that if
software doesn't work as documented or intended, the why needs to be discovered
and addressed with a solution that matches documentation.
Ed
From:
Martin,
Reading your reply, it sounds like you understand and somewhat confirm this
bug. I agree this may be a Windows XP only bug. I have not the ability to
confirm this bug on newer versions of Windows or newer versions of NTP at work.
The bug was seen on a stable corporate LAN, of which
-Original Message-
From: questions-bounces+edward.mischanko=arcelormittal@lists.ntp.org
[mailto:questions-bounces+edward.mischanko=arcelormittal@lists.ntp.org] On
Behalf Of unruh
Sent: Monday, September 09, 2013 12:34 AM
To: questions@lists.ntp.org
Subject: Re: [ntp:questions]
: [ntp:questions] Tighter regulation?
Mischanko, Edward T wrote:
I tried reducing the Allan Intercept to 7 and the result was wild swings
in
frequency ppm. I don't know why? Is the FLL broken? Has anyone else
observed this behavior?
[Mischanko, Edward T]
To be more specific, I get wild
-Original Message-
From: Charles Swiger [mailto:cswi...@mac.com]
Sent: Friday, May 24, 2013 1:01 AM
To: Mischanko, Edward T
Cc: questions@lists.ntp.org
Subject: Re: [ntp:questions] Tighter regulation?
On May 23, 2013, at 10:02 PM, Mischanko, Edward T
edward.mischa
On 2013-05-21, Mischanko, Edward T
edward.mischa...@arcelormittal.com
wrote:
My concern is that too much data is being thrown away when polling
above 256 seconds and that allows excessive wandering of my clock.
If too much data is being thrown away, it would be because the poll
adjust
@lists.ntp.org
[mailto:questions-
bounces+edward.mischanko=arcelormittal@lists.ntp.org] On Behalf Of
unruh
Sent: Friday, May 24, 2013 9:55 AM
To: questions@lists.ntp.org
Subject: Re: [ntp:questions] Tighter regulation?
On 2013-05-24, Mischanko, Edward T edward.mischa
: [ntp:questions] Tighter regulation?
Mischanko, Edward T wrote:
I would modify the current algorithm with an exception that if offsets
exceed 1 millisecond for more than one polling cycle, then, polling
will be
reduced by one interval, else, continue normal operation.
Whilst I still
] Tighter regulation?
On 2013-05-25, Mischanko, Edward T edward.mischa...@arcelormittal.com
wrote:
-Original Message-
From: Charles Swiger [mailto:cswi...@mac.com]
Sent: Friday, May 24, 2013 1:01 AM
To: Mischanko, Edward T
Cc: questions@lists.ntp.org
Subject: Re
: [ntp:questions] Tighter regulation?
On 5/25/2013 5:55 AM, Mischanko, Edward T wrote:
[Mischanko, Edward T]
I would modify the current algorithm with an exception that if offsets
exceed 1 millisecond for more than one polling cycle, then, polling
will be
reduced by one interval, else
that there
would be little difference between 1024 and 7000 second effective
sampling rates.
[Mischanko, Edward T]
Yes, I agree!
As I said above, the real issue is that of correctly identifying a step
in the frequency, or its first derivative, and rapidly turning down the
time constants
On 2013-05-21, Mischanko, Edward T edward.mischa...@arcelormittal.com
wrote:
My concern is that too much data is being thrown away when polling
above 256 seconds and that allows excessive wandering of my clock.
If too much data is being thrown away, it would be because the poll
into ntp.conf.
Does it exist tool which read log and plot it ?
[Mischanko, Edward T]
Yes, Try removing these 3 lines or putting ## at the beginning of them for
testing. Ntpd ignores lines in the configuration that begin with #.
What do you think to remove these 3 lines from all ntp servers
+edward.mischanko=arcelormittal@lists.ntp.org
[mailto:questions-
bounces+edward.mischanko=arcelormittal@lists.ntp.org] On Behalf Of
David Woolley
Sent: Monday, May 20, 2013 8:13 AM
To: questions@lists.ntp.org
Subject: Re: [ntp:questions] Tighter regulation?
Mischanko, Edward T wrote
: Monday, May 20, 2013 3:14 PM
To: questions@lists.ntp.org
Subject: Re: [ntp:questions] Tighter regulation?
On 2013-05-20, Mischanko, Edward T edward.mischa...@arcelormittal.com
wrote:
Hello friends,
Does anyone know what setting can be changed that will cause
tighter regulation
Why are you doing this?
restrict 10.2.3.5
This is the server you want your clients to sync to, isn't it?
Regards,
Ed
-Original Message-
From: questions-bounces+edward.mischanko=arcelormittal@lists.ntp.org
[mailto:questions-
Hello friends,
Does anyone know what setting can be changed that will cause
tighter regulation of the offset. My goal is to get clk_wander to
equal as close to zero as possible more often. I would also like
to see the frequency adjusted with every change in offset data;
it currently does not
: Re: [ntp:questions] Tighter regulation?
Mischanko, Edward T wrote:
Does anyone know what setting can be changed that will cause
tighter regulation of the offset. My goal is to get clk_wander to
Why do you want to track network propagation delay changes, at the
expense of accurate
] Tighter regulation?
On 20/05/2013 08:58, Mischanko, Edward T wrote:
Hello friends,
Does anyone know what setting can be changed that will cause
tighter regulation of the offset. My goal is to get clk_wander to
equal as close to zero as possible more often. I would also like
to see
I think you need to first ask yourself how much of an offset is acceptable.
The default for a step adjustment is 0.128 seconds, but this value can be
tinkered in the ntp.conf file with the following command:
tinker step .005
Going below 0.005 seconds doesn't seem practical as ntp will not
Is there a way to configure ntpd so that when the offset exceeds 1
millisecond polling will automatically be set to 64 seconds or less?
If I understand correctly, polling currently is adjusted by the speed of
change in offset. It takes forever for a large offset to be skewed at
large polling
I think Harlan may have a valid point here.
For some, better may mean My clock frequency is stable and I am
tracking the middle of the clique as opposed to I am tighty latched
to the server I am currently listening to.
H
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Unruh,
Where can I find these versions of ntpd?
Are they or can they be ported for Windows?
There do exist versions of ntpd
which have incorporated temperature compensation-- they measure the temp
of the system using any of the on-board thermometers, and derive the
sensitivity of the onboard
Is this a bug, then?
Ed
-Original Message-
From: Charles Elliott [mailto:elliott...@verizon.net]
Sent: Monday, April 15, 2013 7:33 AM
To: Mischanko, Edward T
Subject: RE: [ntp:questions] 70 msec spike when rebooting
You are lucky! I see spikes of over 1000 ms with Windows 7
Is it normal to have a 70 msec spike when rebooting Windows XP?
I was under the impression that NTP was supposed to set the RTC when exiting?
Regards,
Ed
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Unless ntp is over shooting in its corrections, you don't have a problem with
ntp, per say. NTP is configured to slew all corrections less than 0.128
seconds. If after a day to settle down, you still have big jumps, then, you
definitely have a clock problem.
Regards,
Ed
I am running
$8-10 for the crystal would imply a total motherboard price of $2,000+???
Wouldn't that imply $210 vs. $200 price? Why $2,000+?
website.read...@gmail.com wrote:
I can obtain some precision crystals (+/- 2ppm) for about $8 to $10,
+ so why aren't they being added to the mid-level and up
What can be done with ntpd's code to address the lack of speed in ramping
down the time constant as needed to keep up with changes in the local clock?
You are observing on a time scale much shorter than the loop time
constant. ntpd has an adaptive time constant, and once it has gained
initial
Version 3.80 of the firmware is available from Garmin here:
http://www8.garmin.com/support/collection.jsp?product=010-00321-31
I usually run the current firmware unless it's contradicted by a bug of some
sort.
[]
It was not an issue of stability, but of the notification of which
second.
You seem to not like Garmin, as you are quick to cut down the brand.
What brand and model GPS do you use and recommend for time synchronization?
I never found firmware updates to be an issue; at least they have continuing
support for their product. I'm not real impressed with the manufacturer
And what exactly is wrong with the Garmin 18x? I have found my 18x to be
much more stable than the Sure Electronics one.
You are always at the mercy of the receiver.
And it is not the fix time. ZDA puts out only to the nearest 10 ms. the
others to the nearest second or 10ths of a second.
Thank you, David. I also took issue with Unruh's comment.
My 18x is much more stable than the Sure Electronics GPS.
On 11/02/2013 23:56, unruh wrote:
[]
You are always at the mercy of the receiver.
And it is not the fix time. ZDA puts out only to the nearest 10 ms. the
others to the
Hello Deepak,
I too am not sure why you are trying to accomplish this,
but it seems to be possible. You only have to configure
the local reference clock driver. Try adding this to your
server configuration.
server 127.127.1.1
fudge 127.127.1.1 stratum 10
The ntpd selection protocol favors
Garrett,
NTP 4.2.7 has been in development for over 6 months and is very stable,
yet, yes, it's still in development.
Regards,
Ed
2013/1/27, Garrett Wollman woll...@bimajority.org:
In article
CABrG=ZyT9ttE4Mea3yauWPru0euQ8TV4m7KHm0bHSwiYa=+b...@mail.gmail.com,
Michael Tatarinov
Garrett,
I didn't realize that my comment would be so offensive to you.
Please accept my apology for trying to be helpful.
Regards,
Ed
In article 31033FCF05BEE64695655345F1E94EF015FFDD21@BHW-MBX-02,
Mischanko, Edward T edward.mischa...@arcelormittal.com wrote:
NTP 4.2.7 has been
Steve,
I see from the web page that Autogen is maintained by Bruce Korb.
Bruce is well aware of the current issues in building NTP with
MSVC++2008/2010EE, so patients is the key word here I guess.
Thanks for the information.
Regards,
Ed
On 2013-01-25, Mischanko, Edward T edward.mischa
I know of no way for NTP to know about the new file without restarting NTP
itself. The drift file will allow it to come back into sync very quickly,
so the consequences of a restart should be minimal. NTP reads the leapseconds
file on start-up, I believe.
Regards,
Ed
I'm using my
Martin,
Thank you for your tireless work on this Windows issue. Who updates autogen
and when is it expected? As a side note, the Meinberg release of the Windows
NTP port is excellent; thank you for this trouble free install.
Regards,
Ed
The fix for this problem consists of 2 parts:
1.)
I thought we were going to fix this?
c:\3\ntp-dev-4.2.7p351\sntp\libopts\option-xat-attribute.h(38)
: fatal error C1083: Cannot open include file: 'inttypes.h'
: No such file or directory
Are we still working on this?
Regards,
Ed
___
questions
David,
Jitter of .008 seems pretty good to me?
That's better than my FreeBSD box gets with PPS.
I realize that .000 would be preferable. ;-)
Regards,
Ed
Folks,
I have been trying out the signed 64-bit serialpps.sys device driver
made available as a result of bug report 2108:
Thanks for the suggestion. I will now be using Thunderbird at home.
Regards,
Ed
I faced the same problem, and am now using Thunderbird for NNTP
access.
http://www.mozilla.org/en-GB/thunderbird/
I don't use it for e-mail.
--
Cheers,
David
Web: http://www.satsignal.eu
I have my mail program at work set the break the line at 66 characters. If
that is still too wide, please let me know. As for the sarcasm, I think it is
unhelpful and irritating at best; it too can be considered OT.
Regards,
Ed
Mischanko posts a long post with a single line, saying he
Unruh,
I have now set the line length to 50 characters. I have no idea what your
requirements are; I am trying to please you! As for OT, I would have contacted
you directly, but you have an invalid email address; I have now other means to
communicate with you.
Regards,
Ed
Well, if the
Unruh,
Now I understand what you see.
That would be frustrating, for sure.
I have no idea why the program is acting
this way; it certainly is not what I expected.
Please accept my apologies. I will use the Enter
key more often from now on.
Regards,
Ed
I have now set the line length to 50
Microsoft Outlook supports well and line length is configurable to any length
you want when mailing in plain text mode. My newsfeed program at home,
Microsoft Live Mail, I have yet to figure out how to configure it for or line
length. If you know of a free newsreader program for Windows
Unruh,
I knew I could count on you for a smart @#$ comment that really doesn't belong
here.
Ed
edward.mischa...@arcelormittal.com wrote:
Microsoft Outlook supports well and line length is
configurable to any length you want when mailing in plain text
mode. My newsfeed program at home,
PM
To: questions@lists.ntp.org
Subject: Re: [ntp:questions] PPS only configuration
Edward T. Mischanko wrote:
BlackLists wrote:
Mischanko, Edward T wrote:
I am reconfiguring my NTP servers to be more community
friendly.
I have found that, pool us.pool.ntp.org iburst preempt,
doesn't
I am reconfiguring my NTP servers to be more community friendly.
I have found that, pool us.pool.ntp.org iburst preempt, doesn't seem to work as
no servers come up to sync to? Any idea why?
I am running ntp-dev-4.2.7p343
Regards,
Ed
-Original Message-
From: questions-
and system jitter?
Regards,
Ed
-Original Message-
From: Mischanko, Edward T
Sent: Wednesday, January 09, 2013 1:34 PM
To: 'David J Taylor'
Subject: RE: Raspberry Pi Linux distributions w/ NTP
David,
I'm glad I was able to suggest something that is helpful. As to
what it means
The question may be what is unique about the raspberry pi and the version of
Linux that you are running? I don't see this symptom on my Soekris Net4501
with FreeBSD 8.2. Can you run FreeBSD on a raspberry pi?
Regards,
Ed
-Original Message-
From: questions-
: [ntp:questions] FLL instability
On 06/01/2013 06:29, Mischanko, Edward T wrote:
I have tinker allan 7 in my ntp.conf, as recommended, but I
notice that the frequency is adjusting wildly starting with
polling at 128 seconds. Is something wrong with the way FLL is
implemented?
[]
Where
I have tinker allan 7 in my ntp.conf, as recommended, but I notice that the
frequency is adjusting wildly starting with polling at 128 seconds. Is
something wrong with the way FLL is implemented?
Loopstats:
56298 20566.419 0.000221911 0.910 0.78478 0.00 5
56298 20577.418 0.001418160
-Original Message-
From: Mischanko, Edward T
Sent: Friday, December 21, 2012 9:14 PM
Subject: RE: [ntp:questions] Clock Offset
-Original Message-
From: questions-
bounces+edward.mischanko=arcelormittal@lists.ntp.org
[mailto:questions-
bounces+edward.mischanko
: [ntp:questions] FW: Clock Offset
unruh wrote:
On 2012-12-22, Mischanko, Edward T
edward.mischa...@arcelormittal.com wrote:
I do not doubt you, but if they are measuring different
things
to represent the same thing, then there is a formula off
somewhere?
No, they do not represent
: [ntp:questions] Clock Offset
Mischanko, Edward T wrote:
Notice individual selected peers have positive offsets, but my
clock offset after averaging is negative?
I think the ntpq peers display gives the most recent offset, but
the
averaging uses the best of the last 8
:19 PM
To: questions@lists.ntp.org
Subject: Re: [ntp:questions] Clock Offset
Mischanko, Edward T wrote:
ntpq peers
remote refid st t when poll reach delay
offset jitter
#XXX.XXX.0.1 XXX.XXX
(there's also a smaller
spike every
24 hours due to logrotate and similar housekeeping). I've never
tracked
down the 100 hour cycle, though.
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[Mischanko, Edward
: [ntp:questions] Clock Offset
On 2012-12-18, Mischanko, Edward T
edward.mischa...@arcelormittal.com wrote:
How can my local clock have a negative offset when none of the
selected peers have a negative offset? Is it possible?
Get rid of your local clock. You should NOT have a local clock
set
: [ntp:questions] Clock Offset
Mischanko, Edward T wrote:
How can my local clock have a negative offset when none of the
*** selected peers have a negative offset? Is it possible?
It is not clear what you mean by local clock and offset,
here. For
the normal NTP meanings of these, the offset
How can my local clock have a negative offset when none of the selected peers
have a negative offset? Is it possible?
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mean, seriously, wow. This is just begging for some high
accuracy timestamp
reading.
--
J.
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[Mischanko, Edward T]
I have always read that NTP should
: [ntp:questions] NTP_MAXCLOCK in ntp.h
Mischanko, Edward T wrote:
David,
What evidence would be acceptable? I'm on a Windows machine,
so how
+ would I go about capturing ntpq -p to post it here?
The evidence you are using, for a start.
As best I can remember, ntpq works on Windows. I
-Original Message-
From: Mischanko, Edward T
Sent: Tuesday, December 11, 2012 2:53 AM
To: questions@lists.ntp.org
Subject: RE: [ntp:questions] NTP_MAXCLOCK in ntp.h
-Original Message-
From: questions-
bounces+edward.mischanko=arcelormittal@lists.ntp.org
Please tell me why when watching my client with NTP Time Server Monitor by
Meinberg, my client does not honor the NTP_MAXCLOCK setting in the ntp.h file.
Thanks,
Ed Mischanko
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: [ntp:questions] NTP_MAXCLOCK in ntp.h
Mischanko, Edward T wrote:
Please tell me why when watching my client with NTP Time
Server Monitor by Meinberg, my client does not honor the
NTP_MAXCLOCK setting in the ntp.h file.
Please provide the evidence. ntpq peers may be more useful. I
suspect
: [ntp:questions] NTP_MAXCLOCK in ntp.h
On 2012-12-11, Mischanko, Edward T
edward.mischa...@arcelormittal.com wrote:
Please tell me why when watching my client with NTP Time
Server Monitor by Meinberg, my client does not honor the
NTP_MAXCLOCK setting in the ntp.h file.
Why do you thing your
unruh wrote:
Mark C. Stephens wrote:
Secondly, I picked up a server out of the Junk pile today, it
an HP Dl145G2.
That is a computer?
http://h18000.www1.hp.com/products/servers/proliantdl145/compar
ison-g2.html
http://h18000.www1.hp.com/products/servers/proliantdl145/specif
and is correct by hardware
specifications).
[Mischanko, Edward T]
Seems like your PPS pulse is inverted? You may want to add
Flag2 1 to your fudge line.
server 127.127.22.1
fudge 127.127.22.1 flag2 0 flag3 1 refid PPS
I've noticed that when polling at lower intervals, and PLL is in use,
that the frequency tends to change as expected to steer the offset
towards zero. When polling intervals increase, and FLL is in use, the
frequency tends to follow the offset and not steer the offset towards
zero. Why does FLL
and Clustering of candidates
Mischanko, Edward T wrote:
As for my question on server selection, all these servers
are routers on a corporate network.
If 6 servers have the same offset and 3 do not which
ones would you choose?
I choose the 6 servers with the same offset.
Which would NTP choose
I choose to poll 15 servers on my network for time synchronization. NTP
is selecting over 10 servers and clustering them. Some of the servers
NTP selects have offsets that are higher than the majority; in other
words, they do not have the correct time. Why are they being selected?
Why are so
To: questions@lists.ntp.org
Subject: Re: [ntp:questions] Selection and Clustering of candidates
Mischanko, Edward T wrote:
Some of the servers
NTP selects have offsets that are higher than the majority;
These might be the ones with the most correct time. A high offset only
indicates a poor time
Where can I buy it? What does it cost?
-Original Message-
From: questions-bounces+edward.mischanko=arcelormittal@lists.ntp.org
[mailto:questions-bounces+edward.mischanko=arcelormittal@lists.ntp.o
rg] On Behalf Of kbv
Sent: Friday, May 27, 2011 2:22 AM
To: questions@lists.ntp.org
...@gmail.com]
Sent: Friday, May 27, 2011 4:58 AM
To: Mischanko, Edward T
Cc: questions@lists.ntp.org
Subject: Re: [ntp:questions] Help with NMEA driver
On Fri, May 27, 2011 at 05:10 UTC, Mischanko, Edward T
edward.mischa...@arcelormittal.com wrote:
I tried this:
server 127.127.20.1 mode 18 minpoll
] On
Behalf Of Mischanko, Edward T
Sent: Friday, May 27, 2011 5:08 AM
To: daveh...@gmail.com
Cc: questions@lists.ntp.org
Subject: Re: [ntp:questions] Help with NMEA driver
Dave
Several sentences are being sent and I currently have no way of disabling the
unused ones. I am trying to use $GPGGA
I tried this:
server 127.127.20.1 mode 18 minpoll 4 prefer
Mode 18 didn't want to work, but mode 16 does work. What am I doing
wrong? I verified that the GPS is sending $GPGGA sentences at 9600
baud. Should I try mode 2 at 4800 baud? I am using a Sure GPS on a
Windows XP machine, but that
. Polling Interval
On Sat, May 14, 2011 at 12:23:56PM -0500, Mischanko, Edward T wrote:
Can anyone tell me, does the sensitivity for frequency adjustment
lessen
as the polling interval increases? I ask because I'm observing that
my
offset increases and the frequency adjustment decreases to the point I
Thanks Dave,
My understanding was backwards. Your reference set me straight.
Ed
Sent: Wednesday, May 18, 2011 9:30 AM
To: Mischanko, Edward T
Cc: Miroslav Lichvar; questions@lists.ntp.org
Subject: Re: [ntp:questions] Loop Filter Gains vs. Polling Interval
On Wed, May 18, 2011 at 2:21 PM
to disable power management of clock frequency.
-Original Message-
On Behalf Of David Woolley
Sent: Monday, May 16, 2011 2:01 AM
To: questions@lists.ntp.org
Subject: Re: [ntp:questions] Loop Filter Gains vs. Polling Interval
Mischanko, Edward T wrote:
Can anyone tell me, does the sensitivity
Can anyone tell me, does the sensitivity for frequency adjustment lessen
as the polling interval increases? I ask because I'm observing that my
offset increases and the frequency adjustment decreases to the point I
fall out of sync at polling intervals above 256. What am I doing wrong?
#
Edward T. Mischanko | Maintenance Technician, Electrical
ArcelorMittal Burns Harbor
Finishing | 250 W. US Highway 12
Burns Harbor, IN 46304-9745
T +1 219 787 3601 | F +1 219 787 4510
www.arcelormittal.com
_
From: Mischanko, Edward T
Sent
@lists.ntp.o
rg] On Behalf Of unruh
Sent: Saturday, April 23, 2011 1:20 PM
To: questions@lists.ntp.org
Subject: Re: [ntp:questions] Bug 1700 - Clock drifts excessively at
pollinglevels above 256.
On 2011-04-22, Mischanko, Edward T edward.mischa...@arcelormittal.com
wrote:
256.
My system
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