RE: [ntp:questions] Re: Ntp-4.1.2: tinker step 0;always slew andkernel time discipline
Have you considered:
1. Getting a better network connection to reduce or eliminate=20
asymmetric delays, or
Yes, this is being done.
2. Getting a hardware reference clock; e.g. a GPS timing receiver?
We are using GPS. But we can not conect a GPS to every server. There
will always be a network between GPS and a server.
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t not disclose, copy, circulate or in any other way use or rely on the i...RE: [ntp:questions] Re: Ntp-4.1.2: tinker step 0; always slew andkernel time discipline
Not running NTP is not an option. At least on one type of Sun systems we
had this problem where a system clock
would jump 2 seconds. After long efforts of talking to Sun support, this
explanation was given by Sun.
The system has 2 clocks: TOD (hardware) and the system clock
If the 2 clocks drift to 2 seconds apart, the system clock is set to the
time of the TOD.=20
Actually, according to my tests, this correction is done over span of 30
seconds at a rate of 70ms/s.
This "jump" was freaking out one of our time sensitive applications.
When the...RE: [ntp:questions] Re: Ntp-4.1.2: tinker step 0;always slew and kernel time discipline
The "-x" option sets "tinker step 600". The description of the "-x"
option includes a note about the fact that the kernel time discipline is
disabled with this option. However, I tested it and "ntpdc -c sysinfo"
still shows the "kernel" flag. So, my question applies to the "-x"
option as well.
[mailto:email@example.com] On Behalf Of Tom Smith
Sent: Thursday, February 17, 2005 1:52 PM
Subject: [ntp:questions]...RE: [ntp:questions] Re: Ntp-4.1.2: tinker step 0;always slew and kernel time discipline #2
Thanks for your replies. Actually, I have just got data from my tests
and this is what I am observing.
If "tinker step 0" but the "kernel" is not disabled explicitly, a
(set manually via the date command) is corrected at a rate of about 0.5
millisecond/s as expected,=20
but overshoots the right time by about the same absolute value of
offset. This happens repeatedly.=20
For example, from -20 sec it goes all the way to 20 sec offset and then
back to -20 and so on many times.=20
I did not wait for it to settle down.=20
When the "kernel" i...[ntp:questions] Cross-Compile for ARM
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Content preview: I have the same problem to cross-compile for PPC the
NTP 4.2.0. Beca...Cross-Compile for ARM
I'm cross-compiling NTP on a Red Hat 7.3 Linux box, targeted at an Arcom ARM-based embedded board, with the Acrom Embedded Linux (AEL) 3.7 (kernel 2.4.26) host environment installed.
With NTP 4.1.1 (original included in Arcom's AEL package, no known diffs from core NTP dist), all it takes is './configure --host=arm-linux' and 'make' to get a clean compile.
With ntp-stable-4.2.0a-20040617 and ntp-dev-4.2.0a-20040914, the './configure --host=arm-linux' and 'make' routine gets me a nearly immediate screen full of errors ...
... in directory libntp
...Re: [ntp:questions] Re: How application get precise time from Win NT/XP system time that synchronies to NTP
----- Original Message Follows -----
> If my application polls the system time once every tick, i.e. 10
> millisecond, can I get nanosecond resolution and accuracy that NTP can
The simple answer is no way. The more complicated answer is that you
need an real atomic clock directly connected on a machine running a
realtime O/S with absolutely no other processes that the absolute
ones. Windows wouldn't even be in the picture here, it's not designed
what you are asking.
What exactly are you trying to do and why? A little ex...ntp from ntp.org
I have loaded the Windows 2000 ntp server software port of the Unix
code from NTP.org onto a server and I'm having trouble getting Cisco
devices to accept time. On the Cisco device it will say that time is
synchronized, however, the time shown is not the same time that is on
the NTP server. Should I allow a certain amount of time to elapse for
synchronization to occur or am I just missing something here? I have
both Netware and other NT boxes getting time from this source. I
don't think it should be this difficult.
Scott Crabb wrote:
> I ha...A ntp client is running ahead of time of our netowork ntp server.
I have an issue with a ntp client running Linux SuSE 9.3
Our Network ntp server is a Red Hat Linux Advanced Server release 2.1A.
*I initialy had an* error regarding seeing* *"Bad file descriptor"
errors in /var/log/ntp* *then made sure that only one instance of ntpd*
*is running socklist command and ps -auxxx|egrep ntpd thus run * *kill
-9 PID's and restart ntpd /etc/init.d/ntpd restart. This seemed to fix
things and when I run date command volia I thought I fixed it So thus to
test after weekend.
*Thus I have checked this morning using date command and I the ...Re: [ntp:questions] Unable to get time from NTP server
----- Original Message Follows -----
> That worked. I had a number of peers who's access policy had changed.
> Also, it seems that changing notrust to nopeer seems to have corrected
> the problem. Thanks for your help.
You shouldn't use notrust unless you know what you are doing. Its
meaning changed betweeen 4.1.x and 4.2.0 and almost certainly was
the cause of your problems.
...NTP ( Network Time protocol ) With Ingres
Does somebody use NTP ( ntpdate or xntpd ) with Ingres. Officialy NTP is not
compatible with Ingres.
At 11:34 AM 7/18/2003 +0200, Bruno Wipier wrote:
>Does somebody use NTP ( ntpdate or xntpd ) with Ingres. Officialy NTP is not
>compatible with Ingres.
I guess I'm a bit flustered. Is there some list of
UNIX utilities that are or are not "compatible" with
NTP merely keeps your clock in sync, usually within
milliseconds of the 'master'.
Is Ingres not compatible with the c...M$Windows and ntp (and other time protocols)
Looking for timeserv to sync a M$nt4 machine, I found this doucment at
MicroSoft: http://www.microsoft.com/windows2000/docs/wintimeserv.doc. It nicely
states (official?) details about M$Windows and time sync.
Is there a faq or such where this pointer / information can be added?
> Looking for timeserv to sync a M$nt4 machine, I found this doucment at
> MicroSoft: http://www.microsoft.com/windows2000/docs/wintimeserv.doc.
> It nicely states (official?) details about M$Windows and time sync.
> Is there a faq or such where this pointer / information can be...Network Time Protocol (NTP) for NonStop
Has anyone used ntp on NonStop? HP has ported this for the OSS target.
I know Bowden systems sells NSK-NTP, but I am wondering if anyone has
used the open-source version.
Thanks in advance.
> Has anyone used ntp on NonStop? HP has ported this for the OSS target.
> I know Bowden systems sells NSK-NTP, but I am wondering if anyone has
> used the open-source version.
> Thanks in advance.
We use a product written by a german guy. It only acts as a client but
does the job. If you wany some details then PM me.
Is this the C code that gets...Re: [ntp:questions] Re: Unable to get time from NTP server
----- Original Message Follows -----
> > 4.2.0:
> > notrust
> > Deny service unless the packet is cryptographically
> > authenticated. nopeer
> > Deny packets which would result in mobilizing a new association.
> > This includes
> > broadcast and symmetric active packets when a configured
> > association does not exist.
> It's not specified in the man page, which is probably why I missed it.
> Daniel Rudy
The man pages are not authorative. Always look at the HTML