Mischanko, Edward T wrote:
The ntpd selection protocol favors servers with a lower stratum
level so your local clock should not be selected as long as
there are servers with a lower stratum available.
It might not become the system peer, but it might still be combined into
the estimate
David Taylor wrote:
Does the pool directive automatically imply preempt in recent versions
of NTP?
It effectively does imply 'preempt', since a pool of servers (from a
pool xyz statement) will be monitored and regularly filtered, replacing
the worst servers with the results of a fresh dns
On 06/02/2013 13:02, Terje Mathisen wrote:
David Taylor wrote:
Does the pool directive automatically imply preempt in recent versions
of NTP?
It effectively does imply 'preempt', since a pool of servers (from a
pool xyz statement) will be monitored and regularly filtered, replacing
the worst
What do these messages say, if anything, about the passage of time on
the system?
5 Feb 17:30:40 ntpd[27435]: kernel time sync enabled 2001
5 Feb 18:56:03 ntpd[27435]: kernel time sync enabled 6001
5 Feb 19:13:08 ntpd[27435]: kernel time sync enabled 2001
5 Feb 21:46:51 ntpd[27435]: kernel
I am trying to get to know SNTP by doing some Winsock programming. In
particular, I am using
getaddrinfo(pool.ntp.org, 123, hints, gaires);
where hints has been set up to define a socket type of SOCK_DGRAM and
family of AF_INET. As expected, the Internet address returned in
*gaires does
On 2/6/2013 10:59 AM, no-...@no-place.org wrote:
I am trying to get to know SNTP by doing some
Winsock programming. In particular, I am using
getaddrinfo(pool.ntp.org, 123, hints, gaires);
where hints has been set up to define a socket type
of SOCK_DGRAM and family of AF_INET.
As
On Wed, 06 Feb 2013 11:27:59 -0800, E-Mail Sent to this address will
be added to the BlackLists Null@BlackList.Anitech-Systems.invalid
wrote:
You are likely using a caching DNS server in that PC's
internet configuration?
OK, that explains it.
BTW, if you are going to distribute an
On 2/6/2013 2:40 PM, no-...@no-place.org wrote:
Is that your domain, or are you doing a reverse denial of service attack
on them? Why not just get a decent spam filter or at least follow
RFC2606 by using no-one@foo.invalid?
___
questions mailing
no-...@no-place.org wrote:
where hints has been set up to define a socket type of SOCK_DGRAM and
family of AF_INET. As expected, the Internet address returned in
*gaires does change from time to time. But it seems that it often
That could well be considered a denial of service attack on
On Wed, 06 Feb 2013 21:27:56 +, David Woolley
david@ex.djwhome.demon.invalid wrote:
no-...@no-place.org wrote:
where hints has been set up to define a socket type of SOCK_DGRAM and
family of AF_INET. As expected, the Internet address returned in
*gaires does change from time to time.
no-...@no-place.org wrote:
Yes, I was just reading about that today.
Eventually my use of SNTP will be integrated into a
smartphone app and distributed globally.
So would I get just one vendor zone for both my iPhone
and my Android version of my app?
Yes, as far as I can tell, only one
On Wed, 6 Feb 2013 20:49:26 GMT, Mike S mi...@flatsurface.com wrote:
On 2/6/2013 2:40 PM, no-...@no-place.org wrote:
Is that your domain, or are you doing a reverse denial of service attack
on them? Why not just get a decent spam filter or at least follow
RFC2606 by using no-one@foo.invalid?
Here is a related question: Suppose I wanted to improve my SNTP
implementation by accessing several servers in a short span of time?
(But I don't want the full overhead of NTP.) If DNS caching is
returning the same address then how can I get several independent
servers from the pool? I don't
David Woolley wrote:
no-...@no-place.org wrote:
where hints has been set up to define a socket type
of SOCK_DGRAM and family of AF_INET.
As expected, the Internet address returned in *gaires
does change from time to time.
But it seems that it often returns the same value
if I call it
On 2/6/2013 1:45 PM, Robert Scott wrote: Here is a related question: Suppose I
wanted to
improve my SNTP implementation by accessing several
servers in a short span of time?
(But I don't want the full overhead of NTP.)
If DNS caching is returning the same address then
how can I get
On 2013-02-06, Robert Scott no-one@notreal.invalid wrote:
Here is a related question: Suppose I wanted to improve my SNTP
implementation by accessing several servers in a short span of time?
And how will this improve things?
(But I don't want the full overhead of NTP.) If DNS caching is
On 2013-02-06, Robert Scott no-one@notreal.invalid wrote:
On Wed, 06 Feb 2013 21:27:56 +, David Woolley
david@ex.djwhome.demon.invalid wrote:
no-...@no-place.org wrote:
where hints has been set up to define a socket type of SOCK_DGRAM and
family of AF_INET. As expected, the Internet
unruh wrote:
You really do not know what you are doing, and are then
going to inflict your knowledge on millions of people.
At a ~ buck a app, like most he'll not likely care,
with the app store keeping 60-70% of the price.
Apps don't have to do anything really useful or well,
they just
On Wed, 06 Feb 2013 14:52:31 -0800, E-Mail Sent to this address will
be added to the BlackLists Null@BlackList.Anitech-Systems.invalid
wrote:
unruh wrote:
You really do not know what you are doing, and are then
going to inflict your knowledge on millions of people.
At a ~ buck a app, like
Robert Scott wrote:
You are wrong on several count.
First, the app store keeps 30% of the price.
And secondly my app sells for $300.
I sell about one a day.
I have two competitors whose apps sell for $599 and $999.
In my niche market I am the low-cost provider.
(Shrug)
Considering that
BlackLists wrote:
Considering that iPhones, and android phones can sync with
NTP servers just fine without an extra APP,
iPhone does with the e.g. 4 ATT stratum 1 servers it queries?
12.230.208.### and 12.230.209.### for the ATT iPhones
Android: /system/etc/gps.conf
NTP_SERVER
BlackLists wrote:
Considering that iPhones, and android phones can sync with
NTP servers just fine without an extra APP,
iPhone does with the e.g. 4 ATT stratum 1 servers it queries?
FYI;
12.230.208.### and 12.230.209.### for the ATT iPhones BTW
Android: /system/etc/gps.conf
NTP_SERVER
On Wed, 06 Feb 2013 16:10:44 -0800, E-Mail Sent to this address will
be added to the BlackLists Null@BlackList.Anitech-Systems.invalid
wrote:
(Shrug)
Considering that iPhones, and android phones can sync with
NTP servers just fine without an extra APP,
and the SDKs have monotonic nanosecond
Robert Scott writes:
So I am trying to achieve 12 ppm frequency calibration by developing a
temporary local time stamp that is disciplined by SNTP. I figure two
SNTP samples about 2 to 4 hours apart will give the required frequency
accuracy, assuming typical SNTP jitter.
I don't see why this
Robert Scott wrote:
As I explained in another thread last week,
my app is not a time app.
It is a precision audio frequency measuring app.
Oh, makes more sense now, how was I to know who you were?
You message was not associated with the other thread;
You provided no references to the
On 2013-02-07, E-Mail Sent to this address will be added to the BlackLists
Null@BlackList.Anitech-Systems.invalid wrote:
Robert Scott wrote:
the Android SDK.
It would seem like what you could do in a short amount
of time, would instead take several hours.
His concern is that rate,
E-Mail Sent to this address will be added to the BlackLists wrote:
Cell towers are already synchronized with stratum one
servers and / or GPS, and usually contain stable oscillators
e.g. rubidium, cesium, ...
Most (GSM/3G/4G) cell towers make do with OCXOs/TCXOs, but very good
ones,
John Hasler wrote:
Robert Scott writes:
So I am trying to achieve 12 ppm frequency calibration by developing a
temporary local time stamp that is disciplined by SNTP. I figure two
SNTP samples about 2 to 4 hours apart will give the required frequency
accuracy, assuming typical SNTP jitter.
I
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