Re: [ntp:questions] ntp pool servers disappear - more data

2021-06-26 Thread Charles Elliott
to think about if accurate time is important to you. Charles Elliott -Original Message- From: questions [mailto:questions-bounces+elliott.ch=comcast@lists.ntp.org] On Behalf Of Jim Pennino Sent: Friday, June 25, 2021 2:07 PM To: questions@lists.ntp.org Subject: Re: [ntp:questions] ntp

Re: [ntp:questions] Score is low and not raising

2021-06-10 Thread Charles Elliott
tion on how to estimate these times. I believe it's possible that the 0.5 second difference between internal and external times is could be the result of not accounting for the delays incurred because the GPS device has to compute a solution and then transmit it to the receiver's computer. Charles Ell

Re: [ntp:questions] Score is low and not raising

2021-06-08 Thread Charles Elliott
for the actual formulas; search for "delay" and/or "offset" to find the equations in T1, T2, T3, and T4, which are the measured times. Charles Elliott -Original Message- From: questions [mailto:questions-bounces+elliott.ch=comcast@lists.ntp.org] On Behalf Of William Unruh S

Re: [ntp:questions] PPS, prefer keywoard and redundant peers

2020-11-25 Thread Charles Elliott
nhancement in the severity box of the form that appears, and copy-and-paste your suggestion into the description section. Thank you for your time and effort. Without suggestions for improvement, NTPD would never become a better program. Charles Elliott -Original Message- From:

Re: [ntp:questions] Realistic Performance Expectation for GPS PPS fed ntpd jitter

2020-10-19 Thread Charles Elliott
nd P. Enge (2012). Global Positioning System: Signals, Measurements and Performance. Lincoln, Massachusetts, USA, Ganga-Jamuna Press. Charles Elliott Original Message questions [mailto:questions-bounces+elliott.ch=comcast@lists.ntp.org] On Behalf Of Miroslav Lichvar Sent: Mo

Re: [ntp:questions] Realistic Performance Expectation for GPS PPS fed ntpd jitter

2020-10-15 Thread Charles Elliott
e GPS devices requiring 3-4 Watts, there is no way that a PC is an economical time server over the long run. Charles Elliott -Original Message- From: questions [mailto:questions-bounces+elliott.ch=comcast@lists.ntp.org] On Behalf Of Juergen Perlinger Sent: Thursday, October 15, 2020 1:52 AM To

Re: [ntp:questions] Regarding step_systime call

2020-01-27 Thread Charles Elliott
TPD time step change. Is there another clock program in the system (such as Windows Time) that is also trying to control the time, so that NTPD and the other program are fighting? Have you tried a packet sniffer (such as Wireshark) to see if an external program is somehow affecting the ti

Re: [ntp:questions] Trying to reply to an NTP Questions request I get this

2019-08-22 Thread Charles Elliott
Perlinger or Stenn announce the bugs are fixed, and never the original requests. Although for me this is a huge timesaver, I am assuming that there may be something broken with the way NTP email is being handled now. Charles Elliott -Original Message- From: questions [mailto:questions

Re: [ntp:questions] Garmin LVC 18x jitter problem

2019-07-11 Thread Charles Elliott
zy PD control example of a truck backing into a parking slot from an AI book several years ago, and it works quite well, or at least that example did. Hope this helps. Charles Elliott -Original Message- From: questions [mailto:questions-bounces+elliott.ch=comcast. n...@lists.ntp.o

[ntp:questions] NTP Timestamp

2018-08-06 Thread Charles Elliott
64 to 128 bits as a solution to the 2038 epoch problem. I had not read or heard anything before about such a change. Does anyone who reads this email list know anything about changing the length of the NTP timestamp? Charles Elliott

Re: [ntp:questions] How to get shared memory access from gpsd to ntpd to work?

2017-08-22 Thread Charles Elliott
ay be a good workaround. I am not so sure of the PPS signal coming in that way though. NTPD is set to detect PPS from the rising or falling edge of a single RS-232 port pin, DCD if I recall co

Re: [ntp:questions] Random Observation

2017-06-25 Thread Charles Elliott
: Unsolicited comments are often worth exactly what you pay for them. Do your own testing. Charles Elliott -Original Message- From: questions [mailto:questions-bounces+elliott.ch=comcast@lists.ntp.org] On Behalf Of Richard Thomas Sent: Sunday, June 25, 2017 5:58 AM To: questions Cc: Bob

Re: [ntp:questions] Looking for a NTP stratum 2 appliance

2017-05-31 Thread Charles Elliott
servers. The criteria for receiving one are fairly strict. Charles Elliott -Original Message- From: questions [mailto:questions-bounces+elliott.ch=comcast@lists.ntp.org] On Behalf Of Miroslav Lichvar Sent: Friday, May 26, 2017 5:29 AM To: Matthew Huff Cc: NTP Questions Subject: Re

[ntp:questions] NTPD hunts after reboot

2017-03-31 Thread Charles Elliott
to match its estimate of the current time, would that explain why NTPD now indicates a big jump in time after a reboot, hunts back and forth within a range of about 30+ milliseconds for about an hour after a reboot, and takes about 4 hours before it is providing good time again? Charles Elliott

Re: [ntp:questions] NTP server - Number of received petitions.

2017-03-21 Thread Charles Elliott
by Spanish speakers. I should be able to find someone to translate. Charles Elliott ___ questions mailing list questions@lists.ntp.org http://lists.ntp.org/listinfo/questions

Re: [ntp:questions] NTP server - Number of received petitions.

2017-03-20 Thread Charles Elliott
y of us do live in democracies. Why doesn't someone ask him exactly what he wants and how much he is willing to pay for it, if his requirements require programming? Charles Elliott -Original Message- From: questions [mailto:questions-bounces+elliott.ch=comcast@lists.ntp.org] On Behalf O

Re: [ntp:questions] Monitoring Number of Clients

2017-02-14 Thread Charles Elliott
than Hadoop. Charles Elliott References: [1] Menn, Joseph. (2010). Fatal System Error: The Hunt for the New Crime Lords Who Are Bringing Down the Internet. New York, NY: PublicAffairs. [2] Sherman, Jeff A., & Levine, Judah. (2016). Usage Analysis of the NIST Internet Time Ser

Re: [ntp:questions] Time syncing with something other than ntpd

2017-02-02 Thread Charles Elliott
it. On the other hand, I am very clumsy, and have little experience with electronics. Charles Elliott -Original Message- From: questions [mailto:questions-bounces+elliott.ch=comcast@lists.ntp.org] On Behalf Of William Unruh Sent: Thursday, February 2, 2017 1:06 AM To: questions@lists.ntp.org

Re: [ntp:questions] Can I stop authenticated peers from mobilizing symmetric associations

2017-01-23 Thread Charles Elliott
ever asking about the peer option before. Charles Elliott -Original Message- From: questions [mailto:questions-bounces+elliott.ch=comcast@lists.ntp.org] On Behalf Of Moser, Stefan Sent: Monday, January 23, 2017 3:53 AM To: questions@lists.ntp.org Subject: [ntp:questions] Can I stop a

Re: [ntp:questions] Testing IPv6 code

2017-01-18 Thread Charles Elliott
rpa: NXDOMAI Scott could try turning off automatic DNS name resolution from external servers and put the addresses he needs in the hosts file. That works with time servers that no longer publish their IP addresses. Charles Elliott -Original Message- From: questions [mailto:questions-boun

Re: [ntp:questions] restrict source available from which version?

2017-01-02 Thread Charles Elliott
bps) connection to the Internet), a constant swing of ~5 milliseconds in offset from the correct time is discouraging. I would wager that the offsets are larger with pool servers. Charles Elliott -Original Message- From: questions [mailto:questions-bounces+elliott.ch=comc

Re: [ntp:questions] Query NTP status on windows7

2016-09-20 Thread Charles Elliott
ut I have never personally used these for this purpose. The status word is described in decode.html and might possibly be useful to you. Charles Elliott -Original Message- From: questions [mailto:questions-bounces+elliott.ch=comcast@lists.ntp.org] On Behalf Of sneha b

Re: [ntp:questions] Query regarding Ntp 4.2.8 p6, leap second tests

2016-04-24 Thread Charles Elliott
You are using an old, out-of-date leapseconds file. The current file is leap-seconds.3676060800. I have attached a copy to this email. If you do not receive it, send me an email address of a site that accepts attachments. Charles Elliott -Original Message- From: questions

Re: [ntp:questions] Restrict problems

2016-04-11 Thread Charles Elliott
Can you use a packet sniffer, like Wireshark, to find out how far the packets are going toward the non-responding NTPD? -Original Message- From: questions [mailto:questions-bounces+elliott.ch=comcast@lists.ntp.org] On Behalf Of A C Sent: Sunday, April 10, 2016 1:50 PM To: NTPD

Re: [ntp:questions] Idea to improve ntpd accuracy

2016-02-28 Thread Charles Elliott
? Charles Elliott -Original Message- From: questions [mailto:questions-bounces+elliott.ch=comcast@lists.ntp.org] On Behalf Of Hal Murray Sent: Saturday, February 27, 2016 11:19 PM To: questions@lists.ntp.org Cc: Hal Murray Subject: Re: [ntp:questions] Idea to improve ntpd accuracy

Re: [ntp:questions] Idea to improve ntpd accuracy

2016-02-27 Thread Charles Elliott
o my email. Charles Elliott -Original Message- From: questions [mailto:questions-bounces+elliott.ch=comcast@lists.ntp.org] On Behalf Of Weber Sent: Thursday, February 25, 2016 4:52 PM To: questions@lists.ntp.org Subject: [ntp:questions] Idea to improve ntpd accuracy This

Re: [ntp:questions] NTP refuse to sync

2016-02-12 Thread Charles Elliott
hits, more or less time is added to the current time. I don't think there is any why more than one program could control the time adjustment factor. Charles Elliott -Original Message- From: questions [mailto:questions-bounces+elliott.ch=comcast@lists.ntp.org] On Behalf Of Natal

Re: [ntp:questions] What prevents continuous time within an operating system ?

2016-01-22 Thread Charles Elliott
is called priority inversion and is the bane of systems everywhere. In addition, it is not clear to me that limiting NTPD to one CPU is NTP official policy. Do you have any hard evidence that limiting NTPD to one CPU has any beneficial impact? Charles Elliott -Original Message- From:

Re: [ntp:questions] How to specify interface for multicastclient

2016-01-15 Thread Charles Elliott
et, it did not take long. Charles Elliott -Original Message- From: questions [mailto:questions-bounces+elliott.ch=comcast@lists.ntp.org] On Behalf Of Brian Inglis Sent: Thursday, January 14, 2016 3:16 AM To: questions@lists.ntp.org Subject: Re: [ntp:questions] How to specify

Re: [ntp:questions] ntp orphan sync time after boot

2016-01-15 Thread Charles Elliott
gs I suppose, versus the wear and tear of starting up delicate electronics each morning. The new motherboards and CPUs from Supermicro and Intel use a small fraction of the wattage of their predecessors. Charles Elliott -Original Message- From: questions [mailto:questions-bounce

Re: [ntp:questions] set server to a non utc time by hand

2015-12-22 Thread Charles Elliott
if the simulator mode still exists and if documentation exists for it. Charles Elliott -Original Message- From: questions [mailto:questions-bounces+elliott.ch=comcast@lists.ntp.org] On Behalf Of Harlan Stenn Sent: Monday, December 21, 2015 11:42 PM To: h3x32000-sf Cc: questions

Re: [ntp:questions] IPv6 link local

2015-12-17 Thread Charles Elliott
, this computer cannot access the time from 78. In addition, if I put fe80::41f5:e784:2a07:5e55, instead of 192.168.0.78 or 192.168.1.78, in the Meinberg NTP Time Server Monitor in the Configuration tab, I can no longer monitor the status of 192.168.0/1.78. Charles Elliott -Original Message- From

Re: [ntp:questions] Synchronize distributed PCs with GPS 1 PPS and NTPD for OWD measurements

2015-09-22 Thread Charles Elliott
the cable on the MR350P to find the PPS, since I am about as handy with electrical stuff as Gordon was untying knots. But if you could find a MR350P at a decent price, it is a COTS GPS with PPS. Charles Elliott > -Original Message- > From: questions [mailto:questions- > bounces+e

Re: [ntp:questions] Synchronize distributed PCs with GPS 1 PPS and NTPD for OWD measurements

2015-09-13 Thread Charles Elliott
per, (and in real life, if you can afford expensive receivers) but unless you have fairly good craftsmanship skills, it can be incredibly difficult (and/or expensive) to get GPS to work well and consistently. Charles Elliott ___ questions mailing list questions@lists.ntp.org http://lists.ntp.org/listinfo/questions

Re: [ntp:questions] Reargding ntp (ntp 4.2.8 or higher) on Wince /WEC 2013

2015-09-03 Thread Charles Elliott
For what it is worth, ntpd runs more than adequately on FreeNAS, which uses FreeBSD as its underlying O/S. Why do you write ntpd will only run on NT-based machines? Charles Elliott > -Original Message- > From: questions [mailto:questions- > bounces+elliott.ch=comcast@list

Re: [ntp:questions] iburst and NIST servers

2015-08-04 Thread Charles Elliott
from one computer to another as the external gateway. Because of the NAT, time-d and time-d.nist.gov picked up the fast request rate right away when both clients were briefly active, and would not let me back on for a day or so. Charles Elliott -Original Message- From: questions

Re: [ntp:questions] reachability register

2015-04-14 Thread Charles Elliott
111 177 377 Charles Elliott -Original Message- From: questions [mailto:questions- bounces+elliott.ch=comcast@lists.ntp.org] On Behalf Of MAYER Hans Sent: Wednesday, April 8, 2015 9:23 AM To: questions@lists.ntp.org Subject: [ntp:questions] reachability

Re: [ntp:questions] chrony as a server

2015-02-18 Thread Charles Elliott
If you don't mind me asking, why is chrony superior to NTPD for tracking a PPS signal, or even in general? Charles Elliott -Original Message- From: questions-bounces+elliott.ch=comcast@lists.ntp.org [mailto:questions-bounces+elliott.ch=comcast@lists.ntp.org] On Behalf Of Rob

Re: [ntp:questions] Leap second to be introduced in June

2015-01-20 Thread Charles Elliott
/Proleptic) Hope this helps. Charles Elliott ___ questions mailing list questions@lists.ntp.org http://lists.ntp.org/listinfo/questions

Re: [ntp:questions] Nice fanless high-perf NTP server: Fitlet!

2015-01-16 Thread Charles Elliott
to get along with. Charles Elliott -Original Message- From: questions-bounces+elliott.ch=comcast@lists.ntp.org [mailto:questions-bounces+elliott.ch=comcast@lists.ntp.org] On Behalf Of Rob Sent: Friday, January 16, 2015 3:52 AM To: questions@lists.ntp.org Subject: Re

[ntp:questions] Does an IPV6 address work with NTPD?

2014-11-27 Thread Charles Elliott
is pinged the return is General failure. (Dr.) Judah Levine, Time and Frequency Division, NIST Boulder, says 2610:20:6F15:15::27 works as far as he can tell. So, do IPV6 addresses result in anything useful when used in NTPD? Charles Elliott

[ntp:questions] Raspberry Pi

2014-11-27 Thread Charles Elliott
Applications Processor Motherboard/CPU/VGA Combo for $29.99 + $0.99 shipping today (Thanksgiving) only. Charles Elliott http://promotions.newegg.com/NEemail/Nov-0-2014/Thanksgiving-Sale-blkdeals-e blast-27/index-landing.html?utm_medium=Email http://promotions.newegg.com/NEemail/Nov-0-2014

Re: [ntp:questions] ntp and anycast

2014-11-01 Thread Charles Elliott
. There are real differences in the switching speeds of these devices, and you may see these differences reflected in ntp delay statistics (when in unicast mode). Charles Elliott -Original Message- From: questions-bounces+elliott.ch=comcast@lists.ntp.org [mailto:questions-bounces

Re: [ntp:questions] NTP server not reducing polling interval on upstream hosts

2014-10-24 Thread Charles Elliott
Could ntp.org outsource the work with Mechanical Turk or at one of the volunteer social networking sites, whose names I don't know; I have just read exist. -Original Message- From: questions-bounces+elliott.ch=comcast@lists.ntp.org

Re: [ntp:questions] NTP on CubieBoard

2014-10-14 Thread Charles Elliott
of time? Charles Elliott -Original Message- From: questions-bounces+elliott.ch=comcast@lists.ntp.org [mailto:questions-bounces+elliott.ch=comcast@lists.ntp.org] On Behalf Of David Woolley Sent: Monday, October 13, 2014 5:52 AM To: questions@lists.ntp.org Subject: Re

Re: [ntp:questions] no drift-file on 2008 R2 vps and the time diff. is getting bigger and bigger?

2014-09-17 Thread Charles Elliott
and Windows 8. I connect to a mixture of 9 stratum 1 and 2 external NTP servers that are physically close to me. I also use the HPET as the QPC via the following run cmd as admin and paste bcdedit /set {current} useplatformclock Yes. Charles Elliott -Original Message- From: questions

Re: [ntp:questions] no drift-file on 2008 R2 vps and the time diff. is getting bigger and bigger?

2014-09-17 Thread Charles Elliott
time from that machine. Charles Elliott -Original Message- From: questions-bounces+elliott.ch=comcast@lists.ntp.org [mailto:questions-bounces+elliott.ch=comcast@lists.ntp.org] On Behalf Of Phil W Lee Sent: Tuesday, September 16, 2014 4:30 PM To: questions@lists.ntp.org

Re: [ntp:questions] Compensating for asymmetric delay on a per-peer/server basis?

2014-09-11 Thread Charles Elliott
003 53.520 2.019 3.556 Charles Elliott -Original Message- From: questions-bounces+elliott.ch=comcast@lists.ntp.org [mailto:questions-bounces+elliott.ch=comcast@lists.ntp.org] On Behalf Of mike cook Sent: Thursday, September 11, 2014 2:08 PM To: Questions List Subject

Re: [ntp:questions] Compensating for asymmetric delay on a per-peer/server basis?

2014-09-10 Thread Charles Elliott
, it addition to its other duties. Charles Elliott -Original Message- From: questions-bounces+elliott.ch=comcast@lists.ntp.org [mailto:questions-bounces+elliott.ch=comcast@lists.ntp.org] On Behalf Of Rob Sent: Wednesday, September 10, 2014 3:34 AM To: questions@lists.ntp.org

[ntp:questions] Questions from people whose return address is gmail, googlemail, Yahoo, etc.

2014-09-06 Thread Charles Elliott
that are not in the whois database or that do not respond to pings. Charles Elliott 316 E Cambria St Philadelphia, PA 19134-3324 (215) 425-5222 ___ questions mailing list questions@lists.ntp.org http://lists.ntp.org/listinfo/questions

[ntp:questions] Why does NTPD precision decline when using the HPET ves. the Performance Counter?

2014-09-04 Thread Charles Elliott
(UTC+01:00) 2014 (1): Starting Repeats exact same sequence as on 8/23/2014 3:52:37 PM Is this the way it should be, that the protocol precision declines when the clock is more than 4 times faster? Charles Elliott ___ questions mailing list questions

Re: [ntp:questions] About use of PPS in NTP sync

2014-09-02 Thread Charles Elliott
home built (e.g., http://www.satsignal.eu/raspberry-pi/index.html) or purchased (e.g., http://www.meinberg-usa.com/products/network-time-server.htm), but the original cost is greater and/or can take a long time to get working satisfactorily. Charles Elliott -Original Message- From

Re: [ntp:questions] ntp-4.2.6p5 on Win 7 x64

2014-09-02 Thread Charles Elliott
. Charles Elliott -Original Message- From: questions-bounces+elliott.ch=comcast@lists.ntp.org [mailto:questions-bounces+elliott.ch=comcast@lists.ntp.org] On Behalf Of Nick Sent: Friday, July 18, 2014 4:09 PM To: questions@lists.ntp.org Subject: Re: [ntp:questions] ntp-4.2.6p5 on Win

Re: [ntp:questions] ntp-4.2.6p5 on Win 7 x64

2014-09-02 Thread Charles Elliott
If the reach is not 377, have you used WireShark or another TCP/IP monitoring program to find out what is happening to the NTP packets? It is not all hard to use. -Original Message- From: questions-bounces+elliott.ch=comcast@lists.ntp.org

Re: [ntp:questions] Can NTP sync within 1ms

2014-04-27 Thread Charles Elliott
of servers on www.ntp.org. Charles Elliott ___ questions mailing list questions@lists.ntp.org http://lists.ntp.org/listinfo/questions

Re: [ntp:questions] Windows: SerialPPS Performance Counter/Processor Cycle Counter offset issue

2014-04-14 Thread Charles Elliott
, run cmd as admin and paste bcdedit /set {current} useplatformclock Yes. Charles Elliott -Original Message- From: questions-bounces+elliott.ch=verizon@lists.ntp.org [mailto:questions-bounces+elliott.ch=verizon@lists.ntp.org] On Behalf Of James Gibb Sent: Monday, April 14, 2014 8

Re: [ntp:questions] Has anyone thought about this?

2014-04-14 Thread Charles Elliott
3820, GA-X79-UD3 (rev 1) mobo, Gigabit Ethernet) Note that they are different. Charles Elliott -Original Message- From: questions-bounces+elliott.ch=verizon@lists.ntp.org [mailto:questions-bounces+elliott.ch=verizon@lists.ntp.org] On Behalf Of Terje Mathisen Sent: Thursday

[ntp:questions] Has anyone thought about this?

2014-04-09 Thread Charles Elliott
'bcdedit /set {current} useplatformclock Yes'. Would NTPD have less variation in offset and delay if, say, t4 were measured by the difference in PC readings between the time t1 is measured and the time T4 is presently measured? Charles Elliott

Re: [ntp:questions] Asymmetric Delay and NTP

2014-03-22 Thread Charles Elliott
? Charles Elliott -Original Message- From: questions-bounces+elliott.ch=verizon@lists.ntp.org [mailto:questions-bounces+elliott.ch=verizon@lists.ntp.org] On Behalf Of Joe Gwinn Sent: Friday, March 21, 2014 12:04 PM To: questions@lists.ntp.org Subject: Re: [ntp:questions

Re: [ntp:questions] NIST wonders if it makes sense to outsource NTP over the public Internet

2014-03-20 Thread Charles Elliott
for something everyone benefits from, which in the US right now is not going over well. Charles Elliott -Original Message- From: questions-bounces+elliott.ch=verizon@lists.ntp.org [mailto:questions-bounces+elliott.ch=verizon@lists.ntp.org] On Behalf Of E-Mail Sent to this address

Re: [ntp:questions] Atom PPS with parallel port

2014-02-25 Thread Charles Elliott
results, but I do remember that the latencies were highly variable. Intel subsequently sold the real time O/S, and I have not seen it for sale since. Charles Elliott -Original Message- From: questions-bounces+elliott.ch=verizon@lists.ntp.org [mailto:questions-bounces+elliott.ch

Re: [ntp:questions] NTP NMEA driver

2014-02-06 Thread Charles Elliott
The config file should have this format server 127.127.20.1 mode 65 minpoll 4 maxpoll 4 prefer fudge 127.127.20.1 time2 0.363352 fudge 127.127.20.1 flag4 0 Charles Elliott -Original Message- From: questions-bounces+elliott.ch=verizon@lists.ntp.org [mailto:questions-bounces

Re: [ntp:questions] NTP request retry?

2014-01-28 Thread Charles Elliott
The only way that NTPD works well is to find 4 to 9 stratum 2 servers near your location by searching the server lists at www.ntp.org. Then observe the servers over a few days so that none of the ones you pick have highly variable transit times. Then set your clients facing external servers to

Re: [ntp:questions] NTP request retry?

2014-01-28 Thread Charles Elliott
Discussion: It is definitely, definitely true that offset (error) is highly correlated with the distance between the client and the server. For a time, one of the stratum 2 servers in the USA State of New Jersey was using a server at a technical university in Poland as a source of

Re: [ntp:questions] NTP request retry?

2014-01-27 Thread Charles Elliott
Have you considered the possibility that the computer has an energy saver NIC, and NTPD activity is insufficient to wake it? C Elliott -Original Message- From: questions-bounces+elliott.ch=verizon@lists.ntp.org [mailto:questions-bounces+elliott.ch=verizon@lists.ntp.org] On

Re: [ntp:questions] strange ntptrace behaviour on different ntp-clients

2014-01-24 Thread Charles Elliott
Can you use a packet sniffer, like Wireshark (which only works for Windows Mac OS X 10.5.5), to look at the NTP packets and try to determine the reasons you are receiving the response you have? Charles Elliott -Original Message- From: questions-bounces+elliott.ch=verizon

Re: [ntp:questions] better rate limiting against amplification attacks?

2013-12-28 Thread Charles Elliott
Yeah, but the Meinberg installer for Windows, and the accompanying documentation including the Cheat Sheet, sure makes setting up a default configuration easier. However, I grant that almost nothing beats reading the NTP documentation, especially for novices. Charles Elliott -Original

Re: [ntp:questions] better rate limiting against amplification attacks?

2013-12-28 Thread Charles Elliott
? But the same website that defined amplification attack also described the solution: Use TCP/IP. Is not that just one more reason to switch ntpd, nptq, and ntpdc from UDP to TCP for query processing? Charles Elliott -Original Message- From: questions-bounces+elliott.ch=verizon@lists.ntp.org

Re: [ntp:questions] NTP to multiple networks via one interface.

2013-12-13 Thread Charles Elliott
I don't know much about VMs and nothing about xenserver, so beware of free advice. Here are three suggestions off the top of my head. 1. Would it be possible to have NTPD broadcast on both networks, x.x.75.x and x.x.75.x? 2. Under Windows it appears to be possible to bridge connections on a

Re: [ntp:questions] NTP not syncing

2013-12-06 Thread Charles Elliott
. Charles Elliott -Original Message- From: questions-bounces+elliott.ch=verizon@lists.ntp.org [mailto:questions-bounces+elliott.ch=verizon@lists.ntp.org] On Behalf Of unruh Sent: Friday, December 6, 2013 3:47 AM To: questions@lists.ntp.org Subject: Re: [ntp:questions] NTP not syncing

Re: [ntp:questions] WinNT Port Performance Counter Stability and Drift

2013-11-08 Thread Charles Elliott
) when NTPD starts up. NTPD chooses the timer whose frequency is that of the HPET. Charles Elliott -Original Message- From: questions-bounces+elliott.ch=verizon@lists.ntp.org [mailto:questions-bounces+elliott.ch=verizon@lists.ntp.org] On Behalf Of David Taylor Sent: Friday, November 8

[ntp:questions] ntp.conf on FreeBSD

2013-10-11 Thread Charles Elliott
where I should expect to find ntp.conf on FreeBSD? Thanks in advance. Charles Elliott ___ questions mailing list questions@lists.ntp.org http://lists.ntp.org/listinfo/questions

Re: [ntp:questions] GPS/PPS and enable calibrate

2013-09-07 Thread Charles Elliott
calibrate On 2013-09-06, Charles Elliott elliott...@verizon.net wrote: Calibrate has not worked for several years, although it is possible it is fixed now. Someone on this list investigated and reported that there was just pro forma or suggestive code in ntpd as to how it could work

Re: [ntp:questions] GPS/PPS and enable calibrate

2013-09-06 Thread Charles Elliott
and emit the time after a fix, it is needs a several hundred millisecond boost to bring its time up to the present. I am not sure if PPS needs a time2 adjustment. Charles Elliott -Original Message- From: questions-bounces+elliott.ch=verizon@lists.ntp.org [mailto:questions-bounces

Re: [ntp:questions] Strange jumps in PPM

2013-08-23 Thread Charles Elliott
in the accuracy of the time. Charles Elliott -Original Message- From: questions-bounces+elliott.ch=verizon@lists.ntp.org [mailto:questions-bounces+elliott.ch=verizon@lists.ntp.org] On Behalf Of E-Mail Sent to this address will be added to the BlackLists Sent: Wednesday, August 21, 2013 8

Re: [ntp:questions] manual change on clock time seems to inhibit ntp service.

2013-08-21 Thread Charles Elliott
The -g option allows NTPD to take a large time jump on startup, so you should be able to restart NTPD and watch it sync the computer to external time in a few minutes. I know of no mechanism that would allow NTPD to jump 10 minutes without a restart. Charles Elliott -Original Message

Re: [ntp:questions] Start of new GPS 1024 week epoch

2013-08-21 Thread Charles Elliott
as my Windows programming skills have atrophied from meager. Charles Elliott -Original Message- From: questions-bounces+elliott.ch=verizon@lists.ntp.org [mailto:questions-bounces+elliott.ch=verizon@lists.ntp.org] On Behalf Of David Taylor Sent: Tuesday, August 20, 2013 10:49

[ntp:questions] Can't wait on Refclock: err=22, 'Invalid argument'

2013-07-31 Thread Charles Elliott
with inaccurate time. When I stop NTPD and attach SiRFDemo to the port the MR-350P is connected to, the NMEA data is perfect. There have been a few problems with the USB ports after a recent spate of Windows automatic updates, so this problem could be related to that. Charles Elliott

Re: [ntp:questions] ntpq -p command query

2013-07-31 Thread Charles Elliott
negatively correlated, a poll interval of 32 to 64 seconds is the only way to maintain accurate time, in my humble opinion. Do correct me if I am wrong. Charles Elliott -Original Message- From: questions-bounces+elliott.ch=verizon@lists.ntp.org [mailto:questions-bounces+elliott.ch

Re: [ntp:questions] what is the meaning of dash in the type field of ntpq -p output?

2013-06-23 Thread Charles Elliott
. Charles Elliott -Original Message- From: questions-bounces+elliott.ch=verizon@lists.ntp.org [mailto:questions-bounces+elliott.ch=verizon@lists.ntp.org] On Behalf Of Brian Utterback Sent: Saturday, June 22, 2013 10:42 AM To: questions@lists.ntp.org Subject: [ntp:questions

Re: [ntp:questions] How to determine hardware latency for PPS offset given simple tools.

2013-06-21 Thread Charles Elliott
data. You should wait until the Internet is quiescent before observing or taking measurements. Best of luck! Charles Elliott -Original Message- From: questions-bounces+elliott.ch=verizon@lists.ntp.org [mailto:questions-bounces+elliott.ch=verizon@lists.ntp.org] On Behalf Of Paul

Re: [ntp:questions] ntpd connect gpsd shared memory driver

2013-06-19 Thread Charles Elliott
-232 line. Many GPS device manufacturers have manuals that tell how to change the NMEA message output rate. If you have a SiRF or SURE chip, I can help with such a manual. Charles Elliott -Original Message- From: questions-bounces+elliott.ch=verizon@lists.ntp.org [mailto:questions

Re: [ntp:questions] ntpd connect gpsd shared memory driver

2013-06-19 Thread Charles Elliott
receive the NMEA messages. One can find SiRFDemo (3.87) by searching for it with Google or Bing. Charles Elliott -Original Message- From: questions-bounces+elliott.ch=verizon@lists.ntp.org [mailto:questions-bounces+elliott.ch=verizon@lists.ntp.org] On Behalf Of Rob Sent

Re: [ntp:questions] Meinberg NTP client continuously resync to server

2013-05-18 Thread Charles Elliott
TimeTime NTPDTime to to Computer O/S Version OffsetSync? Sync0 Offset Configuration line T Server 2003

Re: [ntp:questions] Meinberg NTP client continuously resync to server

2013-05-17 Thread Charles Elliott
minpoll 4 maxpoll 4 L Win 7 4.2.7p348 +3 min Yes 3:14 8:57 server 192.168.1.89 iburst minpoll 4 maxpoll 4 Charles Elliott -Original Message- From: questions-bounces+elliott.ch=verizon@lists.ntp.org [mailto:questions-bounces+elliott.ch=verizon@lists.ntp.org

Re: [ntp:questions] ntpd 4.2.6p5 will not synchronize to broadcast servers

2013-04-26 Thread Charles Elliott
192.168.1.88 is the broadcast server, and 192.168.1.100 is this machine, one of the recipients. Charles Elliott -Original Message- From: questions-bounces+elliott.ch=verizon@lists.ntp.org [mailto:questions-bounces+elliott.ch=verizon@lists.ntp.org] On Behalf Of Gary Johnson

[ntp:questions] FW: Deal/Day: Discover our 5-★ ebooks for 2013 + SAVE 50% on the Top 25 best-reviewed titles

2013-04-25 Thread Charles Elliott
Save 50% - 25 5-Star ebooks ( http://post.oreilly.com/rd/9z1zslstjchq16md8f5a5ktbuakc8bk6190nqh2ioa8 View in browser) O'Reilly Media http://post.oreilly.com/rd/9z1z6i8ats8d25nkglepebqsq5t05394jc9is5cuuo0 Deal of the Day Discover Our 5-Star Ebooks for 2013 Save 50% on

Re: [ntp:questions] Syncing and peering for a multi-continent deployment

2013-04-08 Thread Charles Elliott
of all evil. Charles Elliott -Original Message- From: questions-bounces+elliott.ch=verizon@lists.ntp.org [mailto:questions-bounces+elliott.ch=verizon@lists.ntp.org] On Behalf Of Blair Zajac Sent: Saturday, April 6, 2013 9:01 PM To: questions@lists.ntp.org Subject

Re: [ntp:questions] high jitter on serial gps causes big time offsets

2013-04-06 Thread Charles Elliott
that they don't install them in typical motherboards; they cost at least as much. Charles Elliott -Original Message- From: questions-bounces+elliott.ch=verizon@lists.ntp.org [mailto:questions-bounces+elliott.ch=verizon@lists.ntp.org] On Behalf Of Robert Scott Sent: Friday

Re: [ntp:questions] NIST vs. pool.ntp.org ?

2013-03-29 Thread Charles Elliott
and finding ones near you is well worth the effort. Nothing will help though if your neighbor decides to download a movie or two. Charles Elliott -Original Message- From: questions-bounces+elliott.ch=verizon@lists.ntp.org [mailto:questions-bounces+elliott.ch=verizon@lists.ntp.org

Re: [ntp:questions] How do I validate my PPS clocks?

2013-02-26 Thread Charles Elliott
between the actual PPS signal and the digital pulse with an oscilloscope. Compared to what I paid for one in the 1990s, oscilloscopes are dirt cheap now. There are people who sell them on eBay too. Charles Elliott -Original Message- From: questions-bounces+elliott.ch=verizon

Re: [ntp:questions] NTP NMEA driver

2013-02-12 Thread Charles Elliott
initialization code, but send out your own messages. I have this manual; if you can't find it on the Internet, send me an email and I will send you a copy. Please stop ragging us about carriage returns in email messages. Charles Elliott -Original Message- From: questions-bounces

Re: [ntp:questions] NTP NMEA driver

2013-02-12 Thread Charles Elliott
Reference Manual; it returns 14,600 entries. Charles Elliott -Original Message- From: questions-bounces+elliott.ch=verizon@lists.ntp.org [mailto:questions-bounces+elliott.ch=verizon@lists.ntp.org] On Behalf Of David Taylor Sent: Tuesday, February 12, 2013 5:25 AM To: questions

Re: [ntp:questions] Confused about pool rotation

2013-02-07 Thread Charles Elliott
on the East Coast of the US around the time of Hurricane Sandy. Charles Elliott -Original Message- From: questions-bounces+elliott.ch=verizon@lists.ntp.org [mailto:questions-bounces+elliott.ch=verizon@lists.ntp.org] On Behalf Of Robert Scott Sent: Wednesday, February

Re: [ntp:questions] Loopstats jitter field mostly zero?

2013-01-11 Thread Charles Elliott
(); System.exit(4); } System.exit(0); } } Your could also Google square root approximation algorithm and find several others. Charles Elliott -Original Message- From: questions-bounces+elliott.ch=verizon@lists.ntp.org [mailto:questions-bounces+elliott.ch=verizon

Re: [ntp:questions] Windows-8 improved timekeeping

2012-12-28 Thread Charles Elliott
Win 8 is also better at switching tasks according to priority. My Win 8 machine runs 8 Seti@Home (CPU intensive) CPU tasks at the lowest priority (low) and 2 GPU tasks at the second lowest priority (below normal). There is no interference with other tasks or with the screen. On versions before

[ntp:questions] Is there a reason broadcast client will not work in Windows XP?

2012-12-19 Thread Charles Elliott
cannot make any version later than that run on Win XP, although they run on Win 7 8. Charles Elliott ___ questions mailing list questions@lists.ntp.org http://lists.ntp.org/listinfo/questions

Re: [ntp:questions] why does asterisk still show after the ntp server is shutdown?

2012-11-17 Thread Charles Elliott
any suggestions for realizing their project's goals. Charles Elliott -Original Message- From: questions-bounces+elliott.ch=verizon@lists.ntp.org [mailto:questions-bounces+elliott.ch=verizon@lists.ntp.org] On Behalf Of Uwe Klein Sent: Saturday, November 17, 2012 5:21 AM

Re: [ntp:questions] NTP.ORG MEINBERG KEEP TIME ACCURATE to 10MS

2012-11-15 Thread Charles Elliott
other source of time? Charles Elliott -Original Message- From: questions-bounces+elliott.ch=verizon@lists.ntp.org [mailto:questions-bounces+elliott.ch=verizon@lists.ntp.org] On Behalf Of unruh Sent: Thursday, November 15, 2012 1:43 AM To: questions@lists.ntp.org Subject: Re

Re: [ntp:questions] NTP.ORG MEINBERG KEEP TIME ACCURATE to 10MS

2012-11-15 Thread Charles Elliott
131.107.13.100 is also a Microsoft time server; it appears to work well. I wrote to the email address given in whois to find the URL for it, but never received a reply. Charles Elliott -Original Message- From: questions-bounces+elliott.ch=verizon@lists.ntp.org [mailto:questions

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