writes:
> Hi ntpd folk,
>
> This will be a long email, I hope somebody is able to help. In short: My
> dcf77 doesn't work very well and I don't know exactly why.
Hi!
A few basics:
Whenever DCF-77 receives a bad spike, it needs at least
120 - "time of the spike" to synchronize again. Maybe ev
Hi,
in a program I wrote I used the existence of the "state" variable to
detect a ntpd v4. To my surprise I found a server that runs NTPv4
without a "state" variable:
ntpq> rl
assID=0 status=0415 leap_none, sync_uhf_clock, 1 event, event_clock_reset,
version="ntpd 4@1.2089-o Mon Feb 8 15:25:
Jared Peterson writes:
> Hi. I have a Red Hat distribution running with a PPS Garmin input. The NTP
> server recognizes the Garmin input, but it's not adjusting to it's time. I'll
> post some diagnostic information. Thanks for the help.
[...]
> [r...@ntpps1 root]# ntpq -p
> remote
Hi,
I'm wondering if there's something wrong with the clock variables of a
"PPS clock". Looking aat those, I get:
ntpq> cl
assID=0 status= clk_okay, last_clk_okay,
device="PPS Clock Discipline", timecode=, poll=2455049, noreply=0,
badformat=0, baddata=0, fudgetime1=0.000, stratum=16, refid=80.
Rob writes:
> Matuschka, Sebastian wrote:
>> The reason i want to switch very soon to another source when DCF77
>> signal is lost, is that I have to tell a FPGA when it should use the
>> DCF77 signal and when to use an alternative source. The FPGA doesn't
>> decodes the time but it uses the DCF7
"Russell, David" writes:
> I have seen several comments saying that the NIC card in an NTP client can
> make a difference in how well NTP will perform.
>
> My servers are Dells running RedHat.
>
> Does anyone have any recommendations for a particularly good NIC card for
> Gigabit speeds? I am
Lei Wang writes:
> Hi,
>
> I did some measurement using NTP with Linux RTAI. The measurement is
> conducted using a GPS hooked up through serial port to the PC and using the
> 1PPS of the GPS to trigger an ISR to read both the TSC counter and TSC
> counter scaled to nanoseconds. The TSC counte
David Lord writes:
> Do logs indicate a config problem?
>
> system server1: MSFa, PPSa peer=server2 and remote servers
> system server2: peer=server1 and remote servers
> system server3: GPSb, PPSb, server2 and server1
>
>
> This is total logged over period Feb 7 to Feb 12:
> ntp.log.server
kjans writes:
> Hi,
>
> I am looking for the best single indicator that can be used to
> determine/monitor the current clock accuracy.
"Best and single" seem to contradict. What about "root dispersion"? ;-)
>
> I have several remote/embedded Linux devices that I am monitoring
> via SNMP
Pete Ashdown writes:
> I've bought a number of clocks from Germany that use DCF-77 for time
> set/synchronization. Needless to say, here in the states I can't use DCF-77.
> I have see a number of GPS -> DCF-77 converters, but since I have a GPS synced
> NTP server, I'd rather just pull time from
"Ray" writes:
> Hi All,
>
> I am running a new version of the NTP daemon, version 4.2.4p6, on a Linux
> machine with kenel version 2.6.27.
Hi!
I didn't investigate further, but I see the same effect, and I suspect
that there is a mismatch between the kernel interface and ntpd. I'm
running seve
malay...@gmail.com (Ryan Malayter) writes:
> On Mon, Aug 24, 2009 at 5:32 PM, Todd Glassey wrote:
>
>> Only someone who was trying to sell VM systems would even bother - its way
>> to simple to maintain the VM system as a client and make all of this noise
>> in the wind.
>
> I am not selling anyth
"David J Taylor"
writes:
[...]
> I think this is an excellent point. It would be fascinating to see a
> histogram of computer clock frequency error, so that one could make a
> statement like "500ppm satisfies 98% of computer clocks" with some degree of
> authority. I'm not aware of any such dat
"nemo_outis" writes:
> "Richard B. Gilbert" wrote in
> news:tlsdnq2e26bblbnxnz2dnuvz_sydn...@giganews.com:
>
>> nemo_outis wrote:
> ...
>>> I fail to see the value or relevance of "500ppm satisfies 98% of
>>> computer clocks" if some other number, perhaps 5000 ppm, could
>>> satisfy yet even mo
"nemo_outis" writes:
> "Richard B. Gilbert" wrote in
> news:poydnd1spod4pbtxnz2dnuvz_vudn...@giganews.com:
>
>> I still haven't seen any argument that supporting a value greater than
>> 500 PPM is worth the trouble!
>
> I still haven't seen any evidence that there is much trouble - only
> anti
"nemo_outis" writes:
> "David J Taylor"
> wrote in
> news:dr_gm.67324$oo7.29...@text.news.virginmedia.com:
>
> ...
>>> The 500 PPM limit may be completely arbitrary but I suspect that it
>>> includes a vast majority of computer clocks.
>>
>> I think this is an excellent point. It would be fa
"David J Taylor"
writes:
[...]
> Ulrich,
>
> So machine running other than Windows don't suspend? In any case, it was more
> the clock-speed variation I was thinking of.
>
> But I note that you think 500ppm is enough.
[Skipping the part where you are saying I'm insulting]
Yes, as even most mec
Brian Utterback writes:
> Unruh wrote:
>> David Woolley writes:
>>
>>> Unruh wrote:
>>
xntp is ntpd 3 as far as I know. The current ntp is ntp 4 which has a
lot of improvements and changes. ntp4 is the only version which is
supported.
>>
>>> I assume that Sun support the NTP V3 i
paul writes:
> Hi All, I'm new to NTP, glad to meet you here.
>
> I did some experiments to test NTP performance on WINNT. In an
> isolated network, two machines are inter connnected with a switcher.
> Machine A is configure as a stratum 12 NTP server, using lcl as
> reference clock; machine B is
T writes:
> Greetings:
>
> We have about 50 Linux/Solaris/Windows boxes running ntpd at several
> different sites. Some of the systems from time to time go out of sync.
> My question is there a way to test ntpd machines are all in sync with
> the master
> server?
>
> I was thinking of using ssh t
Brian Utterback writes:
> When you think that there is a mistake in an RFC, it is wise to check the RFC
> errata list at http://www.rfc-editor.org/errata_list.php
In a recent conversation with Dave about clarifications on RFC 1305 he
said he will put no energy into setting up errata for that RF
Heiko Gerstung writes:
> Hi Clock Addictives,
>
> following the security update of NTP we built a new version of our NTP
> Installer for Windows which now installs NTP 4.2.4p7 (ntpd and tools) as well
> as the full NTP Documentation. The installer now also includes the current
> version of the Op
"David J Taylor"
writes:
> I've recent been suggesting the Windows port of NTP as a program suitable for
> an application where the timekeeping needed to be within a second or two.
> Yes, NTP is overkill, but it has the advantages of multiple servers, best
> server selection, adaptive poll rate,
thegabe...@gmail.com (Gabrie) writes:
> Hi
>
> Our Active Directory admin wants to start syncing time with our ESX hosts.
> But he has one requirement, he wants me to limit the clock adjustment to max
> 1 hour. So if our ESX host has an incorrect time compared to the ntp server,
> the ESX host sho
Unruh writes:
> I am wondering if anyone has investigated what kind and magnitude of
> latencies one gets by going through the parallel and serial port drivers on
> Linux? I have a module, gps, which attaches to the parallel port interrupts
> to deliver time to one of my systems. I seem to be get
Martin Burnicki <[EMAIL PROTECTED]> writes:
[...]
> Why should it he write his own software? NTP can do this very well.
>
> If this is run in a closed network where it it sufficient that all nodes
> just have the *same* time then this is absolutely OK.
...unless you are connecting to the Internet
WANG Cong <[EMAIL PROTECTED]> writes:
> Hello, experts!
>
> Is there any way to configure my NTP server *not* to synchronize time
> from other servers?
Maybe see how NTP works: you NEED a reference clock! So maybe explain in
detail what you really want.
> I have read the man pages about ntpd and
"David L. Mills" <[EMAIL PROTECTED]> writes:
> Evandro,
>
> We didn't account for gravity and time dilation, as the errors in the
> extrapolated ephemeris data dominated the error budget. I am told accurate
> spacecraft navigation needs time to the nanosecond. In principle, the
Wow! Spacecraft st
Serge Bets <[EMAIL PROTECTED]> writes:
> Hello Ulrich,
>
> On Friday, May 9, 2008 at 10:21:44 +0200, Ulrich Windl wrote:
>
>> How does hwclock know when the RTC was updated last? [...] how does
>> hwclock know the drift? Asuming it has exclusive ownership of
Serge Bets <[EMAIL PROTECTED]> writes:
> Hello Ulrich,
>
> On Friday, May 2, 2008 at 16:16:53 +0200, Ulrich Windl wrote:
>
>> Bill Unruh <[EMAIL PROTECTED]> writes:
>>>>> Real men don't want the eleven-minutes mode.
>
> The words y
Noob <[EMAIL PROTECTED]> writes:
[...]
> The relevant code is in sync_cmos_clock()
>
> http://lxr.linux.no/linux/kernel/time/ntp.c#L188
>
> I've added several printk() to this function, and it appears
> that it is never called.
So they enhanced the old code (that worked) ;-)
[...]
Regards,
Ulri
David Woolley <[EMAIL PROTECTED]> writes:
> Richard B. Gilbert wrote:
>
>> that people do some very strange things with computer clocks. I'm thinking,
>> in particlar, of at least one individual who deliberately set his clock to
>> an incorrect time in order to see if Ntpd would correct it.
>
> M
Bill Unruh <[EMAIL PROTECTED]> writes:
[...]
>>> Real men don't want the eleven-minutes mode.
What real men actually want is: Independent on how you set the clock, the
expectation is that after reboot or power cycle the clock is as good as
possible.
IMHO the idea to update the RTC during shutdow
"jkvbe" <[EMAIL PROTECTED]> writes:
> The ntp log file shows when NTP steps the time. But then the potential harm
> is already done. Especially if the time moves backward, our server might
> have serious trouble. Is there a log event which indicates that the time is
> going to be reset in order to
[EMAIL PROTECTED] (Dean S. Messing) writes:
> Serge Bets wrote:
>> On Tuesday, January 22, 2008 at 19:02:23 +, Dean S. Messing wrote:
>>
>> > Is it possible to disable "11 minute mode" from "ntp.conf"?
>>
>> No. You have to tweak the kernel. If you have the PPSkit:
>>
>> | $ echo 0 > /proc
Unruh <[EMAIL PROTECTED]> writes:
> In ntpdate.c around line 542 (4.2.4p4)is the sequence
> if (!authistrusted(sys_authkey)) {
> char buf[10];
>
> (void) sprintf(buf, "%lu", (unsigned long)sys_authkey);
> msyslog(LOG_ERR, "authentication key %s unknown", buf);
Is that t
[EMAIL PROTECTED] (Folkert van Heusden) writes:
> Hi,
>
> Are there any cheap GPS receivers which emit a PPS signal and can be
> used directly without any soldering? E.g. usb or rs232.
Except from cheap, a Meinberg LANTIME might solve your problem
(http://www.meinberg.de). I'm afraid you cannot h
[EMAIL PROTECTED] (Kevin Oberman) writes:
[...]
> Netperf is not really the best way to go. The appropriate tool for
> one-way latency is OWAMP. http://e2epi.internet2.edu/owamp/
I think you missed the point: AFAIK, Rick is the author of netperf ;-)
[...]
Ulrich
__
Martin Burnicki <[EMAIL PROTECTED]> writes:
[...]
> The test machine is a Intel Pentium D 3 GHz (dual core) with Windows Vista
> x64. Data of the time synchronization performance was collected by the time
> adjustment service which comes with the Meinberg driver package for
> Windows. That service
[EMAIL PROTECTED] writes:
> Rob,
>
> Which version of NTP are you running? I had the same problem
> with ntp-dev-4.2.5p71 and several subsequent versions. The
> problem is fixed in version ntp-dev-4.2.5p80; alternatively,
> a workaround is to configure ntp with the option
>
> --without-crypto
T
Steve Kostecke <[EMAIL PROTECTED]> writes:
> On 2007-10-10, Rob <[EMAIL PROTECTED]> wrote:
>> On Tue, 09 Oct 2007 21:32:02 -0400, Rob wrote:
>>
>>> When I reboot, my ntpd server now crashes. Here is the ntp.log:
>>>
>>> 9 Oct 21:16:13 ntpd[3800]: crypto_setup: random seed file //.rnd not found
I guess the root jail in which ntpd runs lacks the ntp.keys file. For SLES you
can configure additional files that should bee in the root jail; for Redhat I
don't know.
Ulrich
"Richard B. Gilbert" <[EMAIL PROTECTED]> writes:
> Mike Toler wrote:
> > I have several blades in a server that need to
Heiko Gerstung <[EMAIL PROTECTED]> writes:
[...]
> - documentation (official HTML docs if installed plus Installer Readme)
I'm sure, you will not just install the docs somewhere, but you will also add a
link into the start menu for at least one of the docs, right? ;-)
> - weblinks (to www.ntp.or
Dreamchaser <[EMAIL PROTECTED]> writes:
> I'm sorry if this not the correct newsgroup, but I'm not sure which one it
> would be.
>
> I am working on an implementation of NTP for an application that I am
> writing. I can't figure out how to get a response from a NTP server on the
As it seems you
gldickens3 <[EMAIL PROTECTED]> writes:
> On Jul 27, 11:03 am, "David J Taylor" <[EMAIL PROTECTED]
> this-bit.nor-this-bit.co.uk> wrote:
> > gldickens3 wrote:
> >
> >
> > > As soon as I changed time server host
> > > name to IP addresses in my ntp.conf file then all time servers were
> > > then use
"David J Taylor" <[EMAIL PROTECTED]> writes:
> Heiko Gerstung wrote:
> > Hi Gurus of Time!
> >
> > I am very happy to announce that we just released a new stable
> > version of our NTP Installer for Windows, including ntp-4.2.4p3 and
> > openssl-0.9.8e.
> []
> > Best Regards,
> > Heiko
>
> Heiko
Martin Burnicki <[EMAIL PROTECTED]> writes:
[...]
> This does not seem to be a NTP problem (you are running ntp-4.2.0a though
> SuSE calls the packet xntp-...).
Just FYI: After a few years of complaint, the package still has the old name,
but the startup-scripts are "rcntp" (without 'x') now. op
gregg dot drwho8 atsign gmail dot com <[EMAIL PROTECTED]> writes:
[...]
> Hello!
> More like one of, were your PPS additions finally added to that
> version of NTP?
Yes, most of those.
> --
> Gregg gregg dot drwho8 atsign gmail dot com
> ---Something rude in Wookiee--- Chewbacca the Wookiee.
__
48 matches
Mail list logo
