Re: [ntp:questions] Server offset included in served time?

2008-09-12 Thread Unruh
Steve Kostecke <[EMAIL PROTECTED]> writes: >On 2008-09-12, David Woolley <[EMAIL PROTECTED]> wrote: >> Howard Barina wrote: >>> >>> Does an NTP servers take into account it's estimated offset in serving time >>> to others? If I am a server and think I am 1.5 milliseconds off from true >>> time,

Re: [ntp:questions] GPS clock for Linux

2008-09-12 Thread Speechless
On Thu, 11 Sep 2008 18:54:25 -0500, Hal Murray wrote: >> I am interested in getting a GPS clock to synchronize our internal >>test network. I am curious to hear about relativley cheap and Linux >>friendly GPS clock. (Less than $100 would be great) > > The Garmin GPS 18 LVC is popular. The a

Re: [ntp:questions] Finding out where ntpd gets its ntp.conf file

2008-09-12 Thread Joseph Gwinn
In article <[EMAIL PROTECTED]>, [EMAIL PROTECTED] (Hal Murray) wrote: > >> No I suspect you ran /usr/sbin/ntpd, not /etc/init.d/ntpd > >> /etc/init.d/ntpd start should do EXACTLY the same thing as when the system > >> runs it on bootup. > > > >If I recall, the line that worked was "/etc/init.d/nt

Re: [ntp:questions] What happens if ntp server unavailable at start up?

2008-09-12 Thread Joseph Gwinn
In article <[EMAIL PROTECTED]>, Unruh <[EMAIL PROTECTED]> wrote: > Harlan Stenn <[EMAIL PROTECTED]> writes: [snip] > > >Unruh> Did the dynamic keyword ever work? The web docs say that it is not > >Unruh> yet implimented. > > >I'm pretty sure it works - what documentation says it doesn't? > > S

Re: [ntp:questions] Reachable and rejected

2008-09-12 Thread Richard B. Gilbert
Dave Close wrote: > Steve Kostecke <[EMAIL PROTECTED]> writes: > >> Are server1 and server2 real NTP servers? What does their ntpq -p output >> look like? > >> Try 'ntpq -pcrv server[1|2]' from another system. > > # ntpq -pcrv server1 > server1: timed out, nothing received > ***Request timed out

Re: [ntp:questions] Reachable and rejected

2008-09-12 Thread Dave Close
Steve Kostecke <[EMAIL PROTECTED]> writes: >Are server1 and server2 real NTP servers? What does their ntpq -p output >look like? >Try 'ntpq -pcrv server[1|2]' from another system. # ntpq -pcrv server1 server1: timed out, nothing received ***Request timed out server1: timed out, nothing received

Re: [ntp:questions] Reachable and rejected

2008-09-12 Thread Steve Kostecke
On 2008-09-12, Dave Close <[EMAIL PROTECTED]> wrote: > Steve Kostecke wrote: > >>Are server1 and server2 real NTP servers? What does their ntpq -p output >>look like? > > I don't have access to these servers. Try 'ntpq -pcrv server[1|2]' from another system. -- Steve Kostecke <[EMAIL PROTECTED]>

Re: [ntp:questions] Server offset included in served time?

2008-09-12 Thread Steve Kostecke
On 2008-09-12, David Woolley <[EMAIL PROTECTED]> wrote: > Howard Barina wrote: >> >> Does an NTP servers take into account it's estimated offset in serving time >> to others? If I am a server and think I am 1.5 milliseconds off from true >> time, will I include this in the timestamps of my ntp re

Re: [ntp:questions] Reachable and rejected

2008-09-12 Thread Dave Close
Steve Kostecke wrote: >Are server1 and server2 real NTP servers? What does their ntpq -p output >look like? I don't have access to these servers. Richard Gilbert wrote: >The offset is large enough that ntpd would need several DAYS to work it off. >Try setting your clock to a reasonable approxim

Re: [ntp:questions] Server offset included in served time?

2008-09-12 Thread Unruh
"Richard B. Gilbert" <[EMAIL PROTECTED]> writes: >David Woolley wrote: >> Howard Barina wrote: >>> >>> Does an NTP servers take into account it's estimated offset in serving >>> time >> >> There seem to have been a lot of questions asked in the last month that >> are based on the false assumpti

Re: [ntp:questions] What happens if ntp server unavailable at start up?

2008-09-12 Thread Unruh
"Richard B. Gilbert" <[EMAIL PROTECTED]> writes: >Evandro Menezes wrote: >> On Sep 12, 8:31 am, Unruh <[EMAIL PROTECTED]> wrote: >>> Sounds great. So, let me say I have pool.ntp.org as a server. when my >>> system comes up (a desktop) the network interface is there, but the dns >>> server is still

Re: [ntp:questions] Server offset included in served time?

2008-09-12 Thread David Woolley
Richard B. Gilbert wrote: > David Woolley wrote: >> There are people who who argue that the NTP algorithms are >> fundamentally flawed and don't give the statistically best time in >> real world situations. I think they have some credibility, but NTP's >> inventor, does not. >> > > I hope you

Re: [ntp:questions] Server offset included in served time?

2008-09-12 Thread Richard B. Gilbert
David Woolley wrote: > Howard Barina wrote: >> >> Does an NTP servers take into account it's estimated offset in serving >> time > > There seem to have been a lot of questions asked in the last month that > are based on the false assumption that "offset" measures the difference > between the lo

Re: [ntp:questions] Server offset included in served time?

2008-09-12 Thread David Woolley
Howard Barina wrote: > > Does an NTP servers take into account it's estimated offset in serving time There seem to have been a lot of questions asked in the last month that are based on the false assumption that "offset" measures the difference between the local clock and true time. Has someon

Re: [ntp:questions] Reachable and rejected

2008-09-12 Thread David Woolley
Dave Close wrote: > dstadr=192.168.58.250, dstport=123, leap=00, stratum=2, precision=-7, Precision -7 is poor, but possibly a contra-indication for the main hypothesis as I believe that w32time is normally even worse, at -6. > rootdelay=0.000, rootdispersion=14089.630, refid=172.16.2.5, reach=3

Re: [ntp:questions] GPS clock for Linux

2008-09-12 Thread Hal Murray
In article <[EMAIL PROTECTED]>, Uwe Klein <[EMAIL PROTECTED]> writes: >Hal Murray wrote: > >> There are a lot of low cost USB GPS gizmos that use the >> SiRF Star III. They suck for timekeeping. >> >Is there a reason known for this? I assume it's a software bug/feature. The problem is drift/

Re: [ntp:questions] What happens if ntp server unavailable at start up?

2008-09-12 Thread Richard B. Gilbert
Evandro Menezes wrote: > On Sep 12, 8:31 am, Unruh <[EMAIL PROTECTED]> wrote: >> Sounds great. So, let me say I have pool.ntp.org as a server. when my >> system comes up (a desktop) the network interface is there, but the dns >> server is still dead, and the gateway is still dead. Ie, no address fo

Re: [ntp:questions] Reachable and rejected

2008-09-12 Thread Richard B. Gilbert
Dave Close wrote: > David Woolley <[EMAIL PROTECTED]> writes: > >> Dave Close wrote: > >>> What I haven't found while reading is how it is possible for a server to >>> be both reachable and rejected. Note that the reject condition is not > >> That's quite easy, but I can't see a case which appli

Re: [ntp:questions] Reachable and rejected

2008-09-12 Thread Steve Kostecke
On 2008-09-12, Dave Close <[EMAIL PROTECTED]> wrote: > # ntpq -p > remote refid st t when poll reach delay offset jitter >== > server1 172.16.2.5 2 u 24 64 3772.159 -51835.

Re: [ntp:questions] What happens if ntp server unavailable at start up?

2008-09-12 Thread Unruh
Harlan Stenn <[EMAIL PROTECTED]> writes: In article <[EMAIL PROTECTED]>, Unruh <[EMAIL PROTECTED]> writes: >Unruh> Steve Kostecke <[EMAIL PROTECTED]> writes: >>> On 2008-09-11, Bill Unruh <[EMAIL PROTECTED]> wrote: A question has arisen in another group-- What happens if, when ntp

Re: [ntp:questions] Reachable and rejected

2008-09-12 Thread Dave Close
David Woolley <[EMAIL PROTECTED]> writes: >Dave Close wrote: >> What I haven't found while reading is how it is possible for a server to >> be both reachable and rejected. Note that the reject condition is not >That's quite easy, but I can't see a case which applies here (using a >not recently

Re: [ntp:questions] What happens if ntp server unavailable at start up?

2008-09-12 Thread Harlan Stenn
>>> In article <[EMAIL PROTECTED]>, Unruh <[EMAIL PROTECTED]> writes: Unruh> Steve Kostecke <[EMAIL PROTECTED]> writes: >> On 2008-09-11, Bill Unruh <[EMAIL PROTECTED]> wrote: >>> A question has arisen in another group-- What happens if, when ntp >>> starts up, the remoter server is unavailable (

Re: [ntp:questions] Finding out where ntpd gets its ntp.conf file

2008-09-12 Thread Hal Murray
>> No I suspect you ran /usr/sbin/ntpd, not /etc/init.d/ntpd >> /etc/init.d/ntpd start should do EXACTLY the same thing as when the system >> runs it on bootup. > >If I recall, the line that worked was "/etc/init.d/ntpd -c our ntp.conf file>". I don't recall that sbin was involved. Running the i

Re: [ntp:questions] What happens if ntp server unavailable at start up?

2008-09-12 Thread Steve Kostecke
On 2008-09-12, Evandro Menezes <[EMAIL PROTECTED]> wrote: > On Sep 12, 8:31 am, Unruh <[EMAIL PROTECTED]> wrote: > >> Sounds great. So, let me say I have pool.ntp.org as a server. when >> my system comes up (a desktop) the network interface is there, but >> the dns server is still dead, and the ga

Re: [ntp:questions] GPS clock for Linux

2008-09-12 Thread Terje Mathisen
Richard B. Gilbert wrote: > Terje Mathisen wrote: >> Using a USB port for the +5V line is the canonical solution: Very >> cheap, dependable, and no extra wall warts. >> >> Terje >> > > I have read claims here that the high and unpredictable latencies in USB > render it useless for time keeping!

Re: [ntp:questions] GPS clock for Linux

2008-09-12 Thread Terje Mathisen
Uwe Klein wrote: > Hal Murray wrote: > >> There are a lot of low cost USB GPS gizmos that use the >> SiRF Star III. They suck for timekeeping. >> > Is there a reason known for this? No PPS signal. Terje -- - <[EMAIL PROTECTED]> "almost all programming can be viewed as an exercise in caching

Re: [ntp:questions] What happens if ntp server unavailable at start up?

2008-09-12 Thread Evandro Menezes
On Sep 12, 8:31 am, Unruh <[EMAIL PROTECTED]> wrote: > > Sounds great. So, let me say I have pool.ntp.org as a server. when my > system comes up (a desktop) the network interface is there, but the dns > server is still dead, and the gateway is still dead. Ie, no address for > pool can be gotten fro

Re: [ntp:questions] GPS clock for Linux

2008-09-12 Thread Uwe Klein
Hal Murray wrote: > There are a lot of low cost USB GPS gizmos that use the > SiRF Star III. They suck for timekeeping. > Is there a reason known for this? uwe ___ questions mailing list questions@lists.ntp.org https://lists.ntp.org/mailman/listinf

Re: [ntp:questions] Finding out where ntpd gets its ntp.conf file

2008-09-12 Thread Joseph Gwinn
In article <[EMAIL PROTECTED]>, Bill Unruh <[EMAIL PROTECTED]> wrote: > Joseph Gwinn <[EMAIL PROTECTED]> writes: > > >In article <[EMAIL PROTECTED]>, > > [EMAIL PROTECTED] (Hal Murray) wrote: > > >> >I'm not a sysadmin, but am digging into service. I don't recall that > >> >the service man pa

Re: [ntp:questions] GPS clock for Linux

2008-09-12 Thread Unruh
"Richard B. Gilbert" <[EMAIL PROTECTED]> writes: >Terje Mathisen wrote: >> Richard B. Gilbert wrote: >>> Hal Murray wrote: The Garmin GPS 18 LVC is popular. "Some assembly required." (aka soldering) No big deal if somebody has a soldering iron handy. There are a couple of links f

Re: [ntp:questions] What happens if ntp server unavailable at start up?

2008-09-12 Thread Unruh
Martin Burnicki <[EMAIL PROTECTED]> writes: >Bill, >Bill Unruh wrote: >> A question has arisen in another group-- What happens if, when ntp starts >> up, the remoter server is unavailable ( eg no DNS or no connection)? >> This is highly likely to be the case for a laptop for example, where the >>

Re: [ntp:questions] GPS clock for Linux

2008-09-12 Thread Unruh
[EMAIL PROTECTED] (Hal Murray) writes: >> I am interested in getting a GPS clock to synchronize our internal >>test network. I am curious to hear about relativley cheap and Linux >>friendly GPS clock. (Less than $100 would be great) >The Garmin GPS 18 LVC is popular. "Some assembly required.

Re: [ntp:questions] GPS clock for Linux

2008-09-12 Thread Unruh
Uwe Klein <[EMAIL PROTECTED]> writes: >Steve Kostecke wrote: >> The GPS 18 LVC costs less than $70. Add to that the time for someone to >> work out the wiring and solder up the connector (well under an hour for >> a competant tech). >If you ask Garmin Europe for a quote : ~190Euro + VAT Grrr

Re: [ntp:questions] What happens if ntp server unavailable at start up?

2008-09-12 Thread Unruh
Steve Kostecke <[EMAIL PROTECTED]> writes: >On 2008-09-11, Bill Unruh <[EMAIL PROTECTED]> wrote: >> A question has arisen in another group-- What happens if, when ntp starts >> up, the remoter server is unavailable ( eg no DNS or no connection)? >> This is highly likely to be the case for a lapto

Re: [ntp:questions] GPS clock for Linux

2008-09-12 Thread Richard B. Gilbert
Terje Mathisen wrote: > Richard B. Gilbert wrote: >> Hal Murray wrote: >>> The Garmin GPS 18 LVC is popular. "Some assembly required." >>> (aka soldering) No big deal if somebody has a soldering iron >>> handy. There are a couple of links from here: >>> http://support.ntp.org/bin/view/Support/

[ntp:questions] Server offset included in served time?

2008-09-12 Thread Howard Barina
Hi, Does an NTP servers take into account it's estimated offset in serving time to others? If I am a server and think I am 1.5 milliseconds off from true time, will I include this in the timestamps of my ntp replies to others? Thanks Howard Barina ___

Re: [ntp:questions] GPS clock for Linux

2008-09-12 Thread Uwe Klein
Terje Mathisen wrote: > Uwe Klein wrote: > >> Steve Kostecke wrote: >> >>> The GPS 18 LVC costs less than $70. Add to that the time for someone to >>> work out the wiring and solder up the connector (well under an hour for >>> a competant tech). >> >> >> If you ask Garmin Europe for a quote : ~190

Re: [ntp:questions] GPS clock for Linux

2008-09-12 Thread Terje Mathisen
Richard B. Gilbert wrote: > Hal Murray wrote: >> The Garmin GPS 18 LVC is popular. "Some assembly required." >> (aka soldering) No big deal if somebody has a soldering iron >> handy. There are a couple of links from here: >> http://support.ntp.org/bin/view/Support/InexpensiveOemGps > > You wi

Re: [ntp:questions] GPS clock for Linux

2008-09-12 Thread Terje Mathisen
Uwe Klein wrote: > Steve Kostecke wrote: > >> The GPS 18 LVC costs less than $70. Add to that the time for someone to >> work out the wiring and solder up the connector (well under an hour for >> a competant tech). > > If you ask Garmin Europe for a quote : ~190Euro + VAT Grrr. Huh??? I bou

Re: [ntp:questions] GPS clock for Linux

2008-09-12 Thread Uwe Klein
Steve Kostecke wrote: > The GPS 18 LVC costs less than $70. Add to that the time for someone to > work out the wiring and solder up the connector (well under an hour for > a competant tech). If you ask Garmin Europe for a quote : ~190Euro + VAT Grrr. uwe

Re: [ntp:questions] What happens if ntp server unavailable at start up?

2008-09-12 Thread Martin Burnicki
Bill, Bill Unruh wrote: > A question has arisen in another group-- What happens if, when ntp starts > up, the remoter server is unavailable ( eg no DNS or no connection)? > This is highly likely to be the case for a laptop for example, where the > connection with the local network is only brought

Re: [ntp:questions] NTP configuration

2008-09-12 Thread Martin Burnicki
Nero Imhard wrote: > To the OP: Do not get confused, but please, please, please understand > that NTP has no business at all with local time If I read the initial posting again it seems to me the OP wants to set the computer's time zone to UTC (On my Windows 2000 system Casablanca is labelled

Re: [ntp:questions] NTP configuration

2008-09-12 Thread Nero Imhard
David Woolley schreef: > Sami al flaish wrote: >> >> I have a problem with the NTP. 1- I am using machine where the >> timezone set to (GMT) Casablanca mandatory. > > Morocco is no longer on GMT in Summer. I'm afraid you're only confusing the issue. "(GMT) Casablanca" probably refers to a t