From: Doug Calvert
[]
It is still the reference implementation just with different defaults. I
also think the minpoll is ridiculously high. If you add your own servers
/ config directives below the line that the GUI adds to
/private/etc/ntp.conf things work fine. I had autokey working on one up
On 11/16/2011 10:03 AM, David J Taylor wrote:
I own a Mac Mini and a MacBook. Their NTP implementation is simply a
joke.
Even with a local stratum 1 I can't get decent accuracy. :-(
David, weren't you interested in a LED clock I was going to build?
Cheers,
Miguel
A pity that there isn't
On 11/16/2011 12:28 PM, David J Taylor wrote:
Apple run their own NTP servers and ship their Macs configured to use
them
to sync time.
Last time I looked those servers were either not working, or very
broken! Apple should use the pool rather than create single poinst of
failure.
Their
On 11/16/2011 11:14 AM, Mike S wrote:
At 10:03 AM 11/16/2011, David J Taylor wrote...
A pity that there isn't a port of the reference NTP for the Mac, such
as we have on Windows.
macmini-2:~ mikes# ntpd --version
ntpd - NTP daemon program - Ver. 4.2.4p4
Seems to be the standard
Of Chris Albertson
Sent: 16 November 2011 18:35
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] iPhone keeping better time?
I doubt we will ever see good time keeping on an IOS type device. The
problem is battery life. Good time keeping requires a stable local
Just how bad is it using network time?
___
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
On 16 November 2011 12:27, Jim Palfreyman jim77...@gmail.com wrote:
Folks,
Is it my imagination or is the iPhone under IOS 5 keeping way better time?
Mine (3 GS running 5.0.1) is apparently within 1 second of UTC which is
good.
By the way... is it possible to build a custom receiver to send
Folks,
Is it my imagination or is the iPhone under IOS 5 keeping way better
time?
I assume it's contacting the mobile towers more often for reading time.
Jim Palfreymam
Lucky Jim!
Certainly doesn't apply to my iPad2. Currently 40.8 seconds out under
5.0.1. Sinful it doesn't use NTP ( I
On 16 November 2011 12:47, David J Taylor david-tay...@blueyonder.co.ukwrote:
Folks,
Is it my imagination or is the iPhone under IOS 5 keeping way better time?
I assume it's contacting the mobile towers more often for reading time.
Jim Palfreymam
Lucky Jim!
Certainly doesn't apply to
I own a Mac Mini and a MacBook. Their NTP implementation is simply a
joke.
Even with a local stratum 1 I can't get decent accuracy. :-(
David, weren't you interested in a LED clock I was going to build?
Cheers,
Miguel
A pity that there isn't a port of the reference NTP for the Mac, such as
I use an app. that is called Emerald Sequoia that pings Internet time servers
and I find my iPhone 4 with IOS 5 is
off by about 1-2 seconds.
Cheers
Raj
Folks,
Is it my imagination or is the iPhone under IOS 5 keeping way better time?
I assume it's contacting the mobile towers more often
At 07:27 AM 11/16/2011, Jim Palfreyman wrote...
Is it my imagination or is the iPhone under IOS 5 keeping way better
time?
I assume it's contacting the mobile towers more often for reading
time.
My Android phone is consistently 1 second behind GPS (CDMA network)
time. That is, it's 14
At 10:03 AM 11/16/2011, David J Taylor wrote...
A pity that there isn't a port of the reference NTP for the Mac, such
as we have on Windows.
macmini-2:~ mikes# ntpd --version
ntpd - NTP daemon program - Ver. 4.2.4p4
Seems to be the standard implementation. Works fine for me.
Yes, Miguel, someone did mention an NTP synched clock some time back,
and
I thought it might be a fun project. Based on an Arduino board IIRC?
Although I don't think it had Wi-Fi by default
I have it running at the moment. Have to build a case tough. See
attached
picture.
It looks
Hi David!
On 16 November 2011 16:18, David J Taylor david-tay...@blueyonder.co.ukwrote:
Yes, Miguel, someone did mention an NTP synched clock some time back, and
I thought it might be a fun project. Based on an Arduino board IIRC?
Although I don't think it had Wi-Fi by default
I
Miguel Gonçalves m...@miguelgoncalves.com wrote:
On 16 November 2011 12:47, David J Taylor
david-tay...@blueyonder.co.ukwrote:
Certainly doesn't apply to my iPad2. Currently 40.8 seconds out under
5.0.1. Sinful it doesn't use NTP ( I suppose you know who didn't approve
of NTP, since
On Wed, Nov 16, 2011 at 7:03 AM, David J Taylor
david-tay...@blueyonder.co.uk wrote:
A pity that there isn't a port of the reference NTP for the Mac, such as we
have on Windows.
As I remember you simply compile NTP on the Mac and it just worked.
No need for a port. Has something changed?
Le 16/11/2011 18:33, Chris Albertson a écrit :
On Wed, Nov 16, 2011 at 7:03 AM, David J Taylor
david-tay...@blueyonder.co.uk wrote:
A pity that there isn't a port of the reference NTP for the Mac, such as we
have on Windows.
As I remember you simply compile NTP on the Mac and it just worked.
As I remember you simply compile NTP on the Mac and it just worked.
No need for a port. Has something changed?Mac OS is really just
BSD with a big bunch of layered software on top.
Chris Albertson
I'd looked for a download, and not found one. I cannot imagine the
typically portrayed Mac
It's even worse on the WiFi iPad - there is no way to automatically set the
time. You can only do it via the Settings page and that only gives you
minute resolution.
The Emerald-Sequoia app is nice, but since it can't actually fix the
time, every app that has time constraints has to do its own
It's even worse on the WiFi iPad - there is no way to automatically set
the
time. You can only do it via the Settings page and that only gives
you
minute resolution.
The Emerald-Sequoia app is nice, but since it can't actually fix the
time, every app that has time constraints has to do its
On 16 November 2011 18:21, David J Taylor david-tay...@blueyonder.co.ukwrote:
It's even worse on the WiFi iPad - there is no way to automatically set
the
time. You can only do it via the Settings page and that only gives you
minute resolution.
The Emerald-Sequoia app is nice, but since it
I doubt we will ever see good time keeping on an IOS type device. The
problem is battery life. Good time keeping requires a stable local
oscillator of some kind that must remain powered up 24x7. But to get
the long battery life they must power off everything they possibly
can. No mater how
I doubt we will ever see good time keeping on an IOS type device. The
problem is battery life. Good time keeping requires a stable local
oscillator of some kind that must remain powered up 24x7. But to get
the long battery life they must power off everything they possibly
can. No mater how
Modern CPUs typically change their clock speeds and can go real slow while
idle. This is why modern PCs keep so much worse time than their 1990s
ancestors.
On Wed, Nov 16, 2011 at 2:56 PM, David J Taylor
david-tay...@blueyonder.co.uk wrote:
I doubt we will ever see good time keeping on an IOS
Message: 5
Date: Wed, 16 Nov 2011 10:35:01 -0800
From: Chris Albertson albertson.ch...@gmail.com
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Subject: Re: [time-nuts] iPhone keeping better time?
Message-ID
Chris, I can see your point, but these devices must have a CPU running all
the time, otherwise how would the soft power-up work? Can the drain of a
CMOS clock chip such as that used in millions of PCs be all that much more?
CPU chips used in battery powered systems typically have a way to
Le 16/11/2011 18:42, mike cook a écrit :
Le 16/11/2011 18:33, Chris Albertson a écrit :
On Wed, Nov 16, 2011 at 7:03 AM, David J Taylor
david-tay...@blueyonder.co.uk wrote:
A pity that there isn't a port of the reference NTP for the Mac,
such as we
have on Windows.
As I remember you simply
m...@miguelgoncalves.com said:
On every sync, the timestamp returned from the NTP server is on the 6 ms
mark this means that the local clock of the Arduino drifts a lot. I am
installing a realtime clock (Chronodot) this weekend that has an accuracy of
+/- 3.5 ppm from -40C to 85C (I read
On Wed, Nov 16, 2011 at 11:56 AM, David J Taylor
david-tay...@blueyonder.co.uk wrote:
Chris, I can see your point, but these devices must have a CPU running all
the time, otherwise how would the soft power-up work?
The ARM processor has a power manager that wakes the CPU and powers it
up when
See also:
[1] http://code.google.com/p/ios-ntp/wiki/WhatsItAllAbout
[2]
http://www.quora.com/Will-iOS-5-Support-NTP-so-that-the-iPad-can-keep-time
Under iOS 5, you can tell an iOS device to automatically set its time
and it appears to use a very simple timed to do it, see the second
Chris, I can see your point, but these devices must have a CPU running
all
the time, otherwise how would the soft power-up work?
The ARM processor has a power manager that wakes the CPU and powers it
up when events like a WiFi packet comes in or there is some input by
the user. The CPU is
32 matches
Mail list logo
