On Dec 8, 2014, at 12:04 PM, Phil W Lee wrote:
>> With air-conditioning on, the temperature change shrinks to about 5C,
>> which reduces the thermal wandering of the XO by a factor of 2. That
>> seems to be a worthwhile improvement, not "largely irrelevant".
>
> Of course, server class machines
On 2014-12-09, skillz...@gmail.com wrote:
> On Sunday, December 7, 2014 7:25:01 PM UTC-8, Harlan Stenn wrote:
>> Rob writes:
>> > David Woolley wrote:
>> > > It starts off a bit badly by talking about the size of nptd, when, in
>> > > fact, very little of ntpd is actually involved in the core al
On Sunday, December 7, 2014 7:25:01 PM UTC-8, Harlan Stenn wrote:
> Rob writes:
> > David Woolley wrote:
> > > It starts off a bit badly by talking about the size of nptd, when, in
> > > fact, very little of ntpd is actually involved in the core algorithm.
> > > Most of it, I guess, is reference
On 2014-12-08, Brian Utterback wrote:
> On 12/4/2014 6:56 PM, William Unruh wrote:
>> One source is fine, unless it either dies or goes nuts.
>> Two are fine, unless on goes nuts.
> Define "goes nuts". Two are not fine if they don't agree on the time,
> and in my experience the many of the admins
In article ,
David Woolley wrote:
>On 02/12/14 01:59, edstu...@gmail.com wrote:
>
>> At the same time, we want drift less than 1 second. However, over
>
>Drift is a pure number. If you ever get a time error of more than
>100ms, ntpd is in severe distress.
On a computer with a blocked fan, ther
On 12/4/2014 6:56 PM, William Unruh wrote:
One source is fine, unless it either dies or goes nuts.
Two are fine, unless on goes nuts.
Define "goes nuts". Two are not fine if they don't agree on the time,
and in my experience the many of the admins that consider using only two
servers are unable
Martin Burnicki wrote:
> If the connection from your local site to the internet
> has the asymmetry then *each* NTP server at a remote site
> has the same additional systematic offset,
> so if you use more than 2 they can overvote your local NTP servers.
>
> One of our customers had such a case,
On Mon, Dec 8, 2014 at 12:27 PM, David Taylor <
david-tay...@blueyonder.co.uk.invalid> wrote:
> When using the pool directive, NTP tries to get a certain total number of
> servers. What is that number, please (I don't know where to find it in the
> source code). I'm seeing a total of 9 servers,
On Dec 8, 2014, at 9:19 AM, William Unruh wrote:
>> Data point: for a normal desktop machine I have at home, which has a
>> 95W TDP i5 CPU and a 145W 970 GPU, I can see a ~12C temperature change
>> on the motherboard temp sensor between idle and full load on both as the
>> total system draw goes
When using the pool directive, NTP tries to get a certain total number
of servers. What is that number, please (I don't know where to find it
in the source code). I'm seeing a total of 9 servers, with ten lines in
the ntpq -pn output, one line being the pool directive itself. Is that
correct
On 2014-12-08, Charles Swiger wrote:
> On Dec 7, 2014, at 7:19 PM, William Unruh wrote:
>>> I suspect most people are a bit more likely to use air conditioning to
>>> control ambient
>>> temperature changes then they are to desolder and swap out their crystals
>>> in the
>>> hopes of obtaining
On Dec 7, 2014, at 7:27 PM, William Unruh wrote:
> On 2014-12-07, Charles Swiger wrote:
>> On Dec 6, 2014, at 8:33 AM, William Unruh wrote:
>>> On 2014-12-06, Charles Swiger wrote:
[ ... ]
>> Dude, give it a rest. You've just acknowledged that the chrony docs at the
>> URL
>> ending with "man
On Dec 7, 2014, at 7:19 PM, William Unruh wrote:
>> I suspect most people are a bit more likely to use air conditioning to
>> control ambient
>> temperature changes then they are to desolder and swap out their crystals in
>> the
>> hopes of obtaining more precise timekeeping
>
> Actually ai
On Sat, Dec 06, 2014 at 03:35:10PM -0500, Paul wrote:
> On Sat, Dec 6, 2014 at 11:12 AM, William Unruh wrote:
>
> > And in my tests 10 years ago or so, I used a local gps clock to test the
> > ability of chrony and ntpd to discipline a computer clock networked to
> > another server which was disc
On Mon, Dec 08, 2014 at 03:27:15AM +, William Unruh wrote:
> On 2014-12-07, Charles Swiger wrote:
> > Yes, so chrony recommends using maxpoll=4 to the LAN, and not only to local
> > refclocks.
>
> No, read the chrony docs. the default is maxpoll 10 minpoll 5.
The default minpoll is 6 and m
On Mon, Dec 8, 2014 at 4:46 AM, David Woolley <
david@ex.djwhome.demon.invalid> wrote:
> There is a lot of confusion in the community about this because of the
> concept of a system peer, and simplistic explanations of what this means.
Yet I wouldn't expect phk to have a simplistic understanding
On Mon, Dec 8, 2014 at 4:46 AM, David Woolley <
david@ex.djwhome.demon.invalid> wrote:
> [Note: your news client failed to add a References header.]
It's a mail client
(I'm on the list because of the Google Groups problem some time back)
.
___
question
Paul wrote:
I asked before but I'll try again since "tsc" has come up.
Mills says (Mitigation Rules and the prefer Keyword):
"The clock combine algorithm uses the survivor list to produce a weighted
average of both offset and jitter. Absent other considerations discussed
later, the *combined off
On 08/12/14 04:08, Paul wrote:
I asked before but I'll try again since "tsc" has come up.
Mills says (Mitigation Rules and the prefer Keyword):
"The clock combine algorithm uses the survivor list to produce a weighted
average of both offset and jitter. Absent other considerations discussed
later
On Sun, 07 Dec 2014 09:46:35 +, David Woolley wrote:
> On 07/12/14 09:08, detha wrote:
>> More and more of those servers end up being virtualized. Quicker
>> reaction to virtualization funnies, and faster convergence on VMs that
>> are spun up/down on demand, seem to be one of the main reasons
Phil W Lee wrote:
Martin Burnicki considered Fri, 05 Dec
2014 14:15:31 +0100 the perfect time to write:
You may run into problems if your WAN connection has asymmetric delays,
and thus to 2 servers on the WAN *seem* to have the same offset which
differs from the offset provided by the 2 servers
Marco Marongiu writes:
> On 08/12/14 04:00, Harlan Stenn wrote:
> > Several more volunteers (coders and sysadmin typs) would be great,
> > too.
>
> Can you please elaborate on what kind of help do you need from sysadmin
> folks, please?
We have equipment in 4 locations at the moment.
Folks comfo
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