Re: Kernel NTP flipping between FLL and PLL modes

2005-04-06 Thread Andriy Gapon
on 05.04.2005 22:32 Peter Jeremy said the following: Note that this code doesn't exist in 5.3. It was introduced sometime between 5.3 and 5.4. In any case, looking at the associated comments, this only affects the FLL/PLL loop gain. Yes, I see that I looked in a wrong place. The FLL/PLL

Re: Kernel NTP flipping between FLL and PLL modes

2005-04-06 Thread Andriy Gapon
on 06.04.2005 11:13 Andriy Gapon said the following: I am using the default value of maxpoll, no overrides. So, IMO this leaves one possibility: mtemp 2048, i.e. hardupdate() was not called for longer than this time i.e. either ntp_adjtime() was not called or it was called without MOD_OFFSET.

Re: Kernel NTP flipping between FLL and PLL modes

2005-04-06 Thread Bob Bishop
Hi, At 11:45 06/04/2005, Andriy Gapon wrote: I can not explain it, but I've suddenly got a gut feeling that the subject discussed might be a result of revision 1.53 of sys/kern/kern_ntptime.c Nope. Tried that (backed it out to 1.52), no improvement. I'm currently runnning a 5.3 with the ntpd from

Re: Kernel NTP flipping between FLL and PLL modes

2005-04-06 Thread David Magda
On Apr 6, 2005, at 07:04, Bob Bishop wrote: I'm currently runnning a 5.3 with the ntpd from 5.2.1 (ie version 4.1.1 not 4.2.0); looks good so far, I'll report back after a sensible interval. You may also want to poke your head into comp.protocols.time.ntp with this issue. Some of the designers

Re: Kernel NTP flipping between FLL and PLL modes

2005-04-06 Thread Jon Noack
On 04/01/05 14:51, Vivek Khera wrote: On Apr 1, 2005, at 12:56 PM, Bob Bishop wrote: At 18:42 01/04/2005, Roland Smith wrote: On my amd64 box I also get the mode flipping, but I don't get resets. Hmm. I am getting resets on my amd64. On my dual opteron, I get flipping perhaps a handful of times

Re: Kernel NTP flipping between FLL and PLL modes

2005-04-06 Thread Bob Bishop
Hi, At 18:21 06/04/2005, Jon Noack wrote: [...] I only got resets on the SMP/ULE machine. Perhaps SMP or ULE make the issue worse? I'm seeing it on both SMP and UP boxes on the same LAN, not running ULE. -- Bob Bishop +44 (0)118 940 1243 [EMAIL PROTECTED] fax +44

Re: Kernel NTP flipping between FLL and PLL modes

2005-04-05 Thread Andriy Gapon
on 01.04.2005 20:40 Bob Bishop said the following: Unlikely I think. As I said, I've got several machines on the same LAN: the 5.3's misbehave; the others don't. #define CLOCK_ALLAN 1500. ... doubleallan_xpt = CLOCK_ALLAN; ... if (ULOGTOD(sys_poll) allan_xpt / 2) { ... if

Re: Kernel NTP flipping between FLL and PLL modes

2005-04-05 Thread Peter Jeremy
On Tue, 2005-Apr-05 15:01:07 +0300, Andriy Gapon wrote: on 01.04.2005 20:40 Bob Bishop said the following: Unlikely I think. As I said, I've got several machines on the same LAN: the 5.3's misbehave; the others don't. #define CLOCK_ALLAN 1500. ... doubleallan_xpt =

Re: Kernel NTP flipping between FLL and PLL modes

2005-04-01 Thread David Magda
On Apr 1, 2005, at 05:45, Peter Jeremy wrote: Any suggestions as to why this is happening? (And how I can stop it regularly flipping) I don't think this is really an issue. It may be annoying to see it in the logs, but NTPv4 uses each algorithm when it's appropriate to get the most accurate

Re: Kernel NTP flipping between FLL and PLL modes

2005-04-01 Thread Bob Bishop
Hi, At 14:04 01/04/2005, David Magda wrote: On Apr 1, 2005, at 05:45, Peter Jeremy wrote: Any suggestions as to why this is happening? (And how I can stop it regularly flipping) I don't think this is really an issue. [etc] I think this is an issue: - As stated, machines running 4.x don't seem to

Re: Kernel NTP flipping between FLL and PLL modes

2005-04-01 Thread Andriy Gapon
on 01.04.2005 16:24 Bob Bishop said the following: I think this is an issue: - As stated, machines running 4.x don't seem to do it - In addition to the mode schizophrenia, undex 5.3 I'm also seeing resets of several seconds which don't happen on identical hardware running 4.11 in the same

Re: Kernel NTP flipping between FLL and PLL modes

2005-04-01 Thread Bob Bishop
Hi, At 17:38 01/04/2005, Andriy Gapon wrote: [...] I suppose that it might be possible that the root cause is in my local network conditions, [etc] Unlikely I think. As I said, I've got several machines on the same LAN: the 5.3's misbehave; the others don't. -- Bob Bishop +44

Re: Kernel NTP flipping between FLL and PLL modes

2005-04-01 Thread Roland Smith
On Fri, Apr 01, 2005 at 02:24:50PM +0100, Bob Bishop wrote: Any suggestions as to why this is happening? (And how I can stop it regularly flipping) I don't think this is really an issue. [etc] I think this is an issue: - As stated, machines running 4.x don't seem to do it - In

Re: Kernel NTP flipping between FLL and PLL modes

2005-04-01 Thread Bob Bishop
Hi, At 18:42 01/04/2005, Roland Smith wrote: On my amd64 box I also get the mode flipping, but I don't get resets. Hmm. I am getting resets on my amd64. -- Bob Bishop +44 (0)118 940 1243 [EMAIL PROTECTED] fax +44 (0)118 940 1295

Re: Kernel NTP flipping between FLL and PLL modes

2005-04-01 Thread Peter Jeremy
On Fri, 2005-Apr-01 19:38:41 +0300, Andriy Gapon wrote: I can second that. I have never seen anything like this with 5.2.1 as soon as I upgraded to 5.3 I started seeing messages like these: ... Mar 29 22:15:40 oddity ntpd[400]: time reset -0.288522 s Mar 29 22:15:40 oddity ntpd[400]: kernel time

Re: Kernel NTP flipping between FLL and PLL modes

2005-04-01 Thread Vivek Khera
On Apr 1, 2005, at 12:56 PM, Bob Bishop wrote: At 18:42 01/04/2005, Roland Smith wrote: On my amd64 box I also get the mode flipping, but I don't get resets. Hmm. I am getting resets on my amd64. On my dual opteron, I get flipping perhaps a handful of times per day (5.4-PRE/amd64 from march 22).