[ntp:questions] NTP 4.2.5p236-RC Released

2009-10-22 Thread NTP Public Services Project
Redwood City, CA - 2009/10/22 - The NTP Public Services Project
(http://support.ntp.org/) is pleased to announce that NTP 4.2.5p236-RC,
a Release Candidate of the NTP Reference Implementation from the
NTP Project, is now available at http://www.ntp.org/downloads.html and
http://support.ntp.org/download.

File-size: 4257481 bytes

MD5 sum: 78bb13572241e624e456698e3e574840

Bug Fixes:

* [Bug 1353] ntpq rv 0 settimeofday always shows UNKNOWN on unix.
   http://bugs.ntp.org/1353
* [Bug 1343] ntpd/ntp_io.c close_fd() does not compile on Solaris 7.
   http://bugs.ntp.org/1343

Other Changes:

* Do not attempt to execute built binaries from ntpd/Makefile when
  cross-compiling (keyword-gen and ntpd --saveconfigquit).
* sntp/main.c: Remove duplicate global adr_buf[] (also defined in
  networking.c) which Piotr Grudzinski identified breaking his build.
* Correct in6addr_any test in configure.ac to attempt link too.
* Cleanup from Dave Mills.

Please report any bugs, issues, or desired enhancements at
http://bugs.ntp.org/.

The NTP (Network Time Protocol) Public Services Project, which is
hosted by Internet Systems Consortium, Inc. (http://www.isc.org/),
provides support and additional development resources for the
Reference Implementation of NTP produced by the NTP Project
(http://www.ntp.org/).  

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[ntp:questions] cgps command question

2009-10-22 Thread jzsjr
Hello,

I set up alix1d box running debian etch with a garmin 18x lvc
receiver.  I am using gpsd and ntp with the shared memory driver
running both gps and pps signal.  The data output provided by ntpq –p
looks good with excellent readings for the GPS and the PPS signal but
my question concerns the output from cgps command.  The status line
blinks between 2D and 3D fix counting up only to 1 every second.  It
continually blinks/refreshes while it updates.  The gps type reads
generic nmea.  There is no data showing on the right side of the
screen.  Is this the way it should look?  We have another box running
a garmin 18x usb not doing pps and the status shows 3d fix and the
seconds count up and there is data on the right side and it does not
blink while it updates.  Is it the pps signal on the lvc unit making
it refresh every second?  Being new to all of this I’m just trying to
figure out what is normal.  Should I even care what the cgps commands
shows me?  Is this command only helpful when using the GPS signal only
and not helpful when using the PPS signal?

Thanks for any help,
Jim

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Re: [ntp:questions] testing slew only mode (-x), not slewing correctly (linux sles10, ntpd v 4.1.1)

2009-10-22 Thread Steve Kostecke
On 2009-10-22, David Woolley da...@djwhome.demon.co.uk wrote:

 I believe that the official policy line is that database systems that 
 require monotonic time for their distributed transaction logic are 
 fundamentally flawed.

It is the database people who require monotonic time.

If there is an official policy line it is that any system with a clock
which drifts past the step threshold is fundamentally flawed.

-- 
Steve Kostecke koste...@ntp.org
NTP Public Services Project - http://support.ntp.org/

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Re: [ntp:questions] testing slew only mode (-x), not slewing correctly (linux sles10, ntpd v 4.1.1)

2009-10-22 Thread David Woolley
Steve Kostecke wrote:
 On 2009-10-22, David Woolley da...@djwhome.demon.co.uk wrote:
 
 I believe that the official policy line is that database systems that 
 require monotonic time for their distributed transaction logic are 
 fundamentally flawed.
 
 It is the database people who require monotonic time.

Transaction logic implied databases.
 
 If there is an official policy line it is that any system with a clock
 which drifts past the step threshold is fundamentally flawed.

Dave Mills on not using NTP for critical database timestamps: 
http://groups.google.co.uk/group/comp.protocols.time.ntp/msg/20d802c94f87c274.

On the other hand, the low end of the ADSL speed range will easily cause 
128ms to be exceeded unless both you and your ISP have NTP traffic 
prioritised.

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Re: [ntp:questions] testing slew only mode (-x), not slewing correctly (linux sles10, ntpd v 4.1.1)

2009-10-22 Thread E-Mail Sent to this address will be added to the BlackLists
David Woolley wrote:
 Steve Kostecke wrote:
 On 2009-10-22, David Woolley wrote:
 I believe that the official policy line is that database
  systems that require monotonic time for their
  distributed transaction logic are fundamentally flawed.
 It is the database people who require monotonic time.

 Transaction logic implied databases.
 If there is an official policy line it is that any
  system with a clock which drifts past the step threshold
  is fundamentally flawed.

I guess I could see 10 minutes (or more) if the time had
 never been set to anything reasonable;  However 10 minutes
 seems really far out for something that was previously
 syncing with NTP servers (or any other source of time).


 Dave Mills on not using NTP for critical database timestamps:
 http://groups.google.co.uk/group/comp.protocols.time.ntp/msg/20d802c94f87c274.

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E-Mail Sent to this address blackl...@anitech-systems.com
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Re: [ntp:questions] testing slew only mode (-x), not slewing correctly (linux sles10, ntpd v 4.1.1)

2009-10-22 Thread Richard B. Gilbert
E-Mail Sent to this address will be added to the BlackLists wrote:
 David Woolley wrote:
 Steve Kostecke wrote:
 On 2009-10-22, David Woolley wrote:
 I believe that the official policy line is that database
  systems that require monotonic time for their
  distributed transaction logic are fundamentally flawed.
 It is the database people who require monotonic time.
 Transaction logic implied databases.
 If there is an official policy line it is that any
  system with a clock which drifts past the step threshold
  is fundamentally flawed.
 
 I guess I could see 10 minutes (or more) if the time had
  never been set to anything reasonable;  However 10 minutes
  seems really far out for something that was previously
  syncing with NTP servers (or any other source of time).
 
I don't see what previously synching has to do with anything.
If previously synching means three weeks ago, it's meaningless!
If it means thirty minutes ago, I would expect the clock to be
within a few milliseconds of the correct time.  If not I would
regard the clock as broken!  I'm assuming reasonably constant temperature!

snip

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Re: [ntp:questions] cgps command question

2009-10-22 Thread Rich Wales
If you aren't seeing any right-hand data from cgps, I would guess
this is most likely because your GPS isn't currently configured
to report which satellites it can see (via $GPGSV sentences).

I don't believe the output of cgps shows PPS info.

Questions about gpsd and cgps should really be directed to the
gpsd-users list (gpsd-us...@lists.berlios.de), so if this answer
isn't sufficient, you should ask again on that list.

-- 
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