Re: [ntp:questions] leapyear bug in gpsd

2008-01-21 Thread Dennis Hilberg, Jr.
Danny Mayer wrote: I have never seen someone who says they are a gpsd maintainer on here but we would be glad to have them comment on this if they are here. Anyone know where they usually hang out? gpsd has its own mailing list, which is where support is offered, [EMAIL PROTECTED] . All of

Re: [ntp:questions] leapyear bug in gpsd

2008-01-21 Thread Dennis Hilberg, Jr.
Johan Swenker wrote: Hi, Today I found why my gps receiver stopped working last newyears eve. Apparently gpsd has a leapyear bug (repaired on january 1st). Thus it reported a january 21 while it still was january 20. Which was discarded by ntp. After compiling the new version of gpsd, my

Re: [ntp:questions] thttpd and auto-redirect

2008-01-21 Thread Maarten Wiltink
Danny Mayer [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED] Harlan Stenn wrote: When somebody automatically types 0.ca.pool.ntp.org it *might* go to my IP address, but I don't have a redirect setup for that hostname. I am using thttpd. How can I make a redirect for *.pool.ntp.org

Re: [ntp:questions] thttpd and auto-redirect

2008-01-21 Thread Jason Rabel
After reading the documentation (took all of a minute or two), thttpd does support multihoming, but it doesn't look like it supports wildcards. For that you will probably have to run apache or another web server that does support wildcards. Or you could just have some text on your front page

[ntp:questions] NTP vs chrony comparison (Was: oscillations in ntp clock synchronization)

2008-01-21 Thread Bill Unruh
Having run NTP stably now for three days on a machine I previously ran chrony on , I compared the control of the clock on that machine with chrony and with ntp (the comparison is obviously sequential, since both cannot run on the same machine at the same time.) The chrony run was from Jan 13.5 to

Re: [ntp:questions] NTP vs chrony comparison (Was: oscillations in ntp clock synchronization)

2008-01-21 Thread Unruh
[EMAIL PROTECTED] (David Woolley) writes: In article [EMAIL PROTECTED], Bill Unruh [EMAIL PROTECTED] wrote: Offset error: NTP: Mean=-3.1usec, Std Dev=63.1usec If offset is the value reported by ntpq, please note that, when ntpd is locked up, this is an indication of the instantaneous

Re: [ntp:questions] why is my pool server's offset so bad

2008-01-21 Thread Pat Farrell
On Mon, 21 Jan 2008 09:40:31 -0800, Dennis Hilberg, Jr. wrote: statistics loopstats peerstats clockstats You won't generate any clockstats unless your using a clock driver. Which I assume requires an external real clock, GPS, WWV, etc.? Using 'noquery' prevents people from using ntpq and

Re: [ntp:questions] quirky adjtimex behaviour [SOLVED]

2008-01-21 Thread Dean S. Messing
hal-usenet wrote: Dean Messing wrote: I am seeing strange behaviour on my _x86_64 Fedora 7 desktop workstation with regard to the system-cmos time that `adjtimex' reports. snip It seems that leaves two other possibilities: a bug in adjtimex or a bug in the kernel. That's where I am

Re: [ntp:questions] NTP vs chrony comparison (Was: oscillations in ntp clock synchronization)

2008-01-21 Thread Unruh
[EMAIL PROTECTED] (David Woolley) writes: In article [EMAIL PROTECTED], Unruh [EMAIL PROTECTED] wrote: No, the offset is the value reported in loopstats. Same thing. If chrony is reporting the same measurements, neither set of measurements is particularly valid. You need to measure the

Re: [ntp:questions] NTP vs chrony comparison (Was: oscillations in ntp clock synchronization)

2008-01-21 Thread Danny Mayer
Unruh wrote: correction applied on that sample. No, this is offset as measured by the ntp procedure ( (t1+t4-t2-t3)/2 ) No, that's wrong. It is very carefully described in the NTPv4 draft section 8 (p27): theta = T(B) - T(A) = 1/2 * [(T2-T1) + (T3-T4)] Not only do you have the wrong

Re: [ntp:questions] NTP vs chrony comparison (Was: oscillations in ntp clock synchronization)

2008-01-21 Thread Danny Mayer
Unruh wrote: All I say is that the experiments I have carried out show that ntp is slow to converge if it starts of badly, and leaves the offset scatter larger than chrony does. It does have a smaller scatter in the rate. But you are using an extremely old version of ntp and things have

Re: [ntp:questions] NTP vs chrony comparison (Was: oscillations in ntp clock synchronization)

2008-01-21 Thread Unruh
[EMAIL PROTECTED] (Danny Mayer) writes: Unruh wrote: All I say is that the experiments I have carried out show that ntp is slow to converge if it starts of badly, and leaves the offset scatter larger than chrony does. It does have a smaller scatter in the rate. But you are using an

Re: [ntp:questions] NTP vs chrony comparison (Was: oscillations in ntp clock synchronization)

2008-01-21 Thread Unruh
[EMAIL PROTECTED] (Danny Mayer) writes: Unruh wrote: correction applied on that sample. No, this is offset as measured by the ntp procedure ( (t1+t4-t2-t3)/2 ) No, that's wrong. It is very carefully described in the NTPv4 draft section 8 (p27): theta = T(B) - T(A) = 1/2 * [(T2-T1) +