Re: system clock loops

2005-07-27 Thread Ariel Biener
On Wednesday 27 July 2005 00:39, Amos Shapira wrote: Why not? As long as its owner doesn't care? There is no law that requires it, and the NTP server operator can do whatever he/she deems right. However, the way it was designed to work is below... From the original NTP RFC1059: The

Re: system clock loops

2005-07-26 Thread Amos Shapira
On 7/26/05, Amit Aronovitch [EMAIL PROTECTED] wrote: Geoffrey had suggested strat-1 ntp (or GPS) as a measure for avoiding the system-clock bug discussed here, I think. I missed this part of the discussion but as far as I can imagine this would have nothing to do with system-clock bugs. Please

Re: system clock loops

2005-07-26 Thread Ariel Biener
On Monday 25 July 2005 21:40, Yedidyah Bar-David wrote: And the netvision server. All seem to sync from that startum 1 server at HUJI. No, timeserver.iix.net.il has its own gps. Hello, Among the public NTP servers available, none is stratum 1, as stratum 1 should never be made public,

Re: system clock loops

2005-07-26 Thread Ariel Biener
On Tuesday 26 July 2005 01:03, Amos Shapira wrote: A reverse lookup confirms it's good old relay.huji.ac.il. I wonder a reverse of what confirms the obviously wrong fact you stated above. ntp.ac.il (aka ntp.ilan.net.il) is 128.139.6.20, while good old relay.huji.ac.il is 128.139.6.1. --Ariel

Re: system clock loops

2005-07-26 Thread Amos Shapira
On 7/27/05, Ariel Biener [EMAIL PROTECTED] wrote: On Monday 25 July 2005 21:40, Yedidyah Bar-David wrote: And the netvision server. All seem to sync from that startum 1 server at HUJI. No, timeserver.iix.net.il has its own gps. Hello, Among the public NTP servers available,

Re: system clock loops

2005-07-25 Thread Ehud Karni
On Mon, 25 Jul 2005 00:36:42 +0300, Amit Aronovitch wrote: Geoffrey S. Mendelson wrote: I am a Nevtvision customer, they use a GPS unit to give them a stratum one server. I would avoid the overloaded server at HUJI if at all possible. Netvision here too - but I see them as stratum 2. I

Re: system clock loops

2005-07-25 Thread Tzafrir Cohen
On Mon, Jul 25, 2005 at 06:19:02PM +0300, Ehud Karni wrote: On Mon, 25 Jul 2005 00:36:42 +0300, Amit Aronovitch wrote: Geoffrey S. Mendelson wrote: I am a Nevtvision customer, they use a GPS unit to give them a stratum one server. I would avoid the overloaded server at HUJI if at all

Re: system clock loops

2005-07-25 Thread Yedidyah Bar-David
On Mon, Jul 25, 2005 at 09:06:42PM +0300, Tzafrir Cohen wrote: On Mon, Jul 25, 2005 at 06:19:02PM +0300, Ehud Karni wrote: On Mon, 25 Jul 2005 00:36:42 +0300, Amit Aronovitch wrote: Geoffrey S. Mendelson wrote: I am a Nevtvision customer, they use a GPS unit to give them a stratum

Re: system clock loops

2005-07-25 Thread Amos Shapira
On 7/26/05, Tzafrir Cohen [EMAIL PROTECTED] wrote: On Mon, Jul 25, 2005 at 06:19:02PM +0300, Ehud Karni wrote: On Mon, 25 Jul 2005 00:36:42 +0300, Amit Aronovitch wrote: Geoffrey S. Mendelson wrote: I am a Nevtvision customer, they use a GPS unit to give them a stratum one

Re: system clock loops

2005-07-25 Thread Amit Aronovitch
Ehud Karni wrote: You can use ntp.ilan.net.il (aka ntp.net.il) - startum 1 (using lab atomic clocks - not GPS - I think it is more accurate). Stratum 2 Israeli ntp servers: timeserver.iix.net.il , openu.ilan.net.il . BTW. Why do you need startum 1 (which telescope do you operate ?). I'm

Re: system clock loops

2005-07-24 Thread Amit Aronovitch
Geoffrey S. Mendelson wrote: I am a Nevtvision customer, they use a GPS unit to give them a stratum one server. I would avoid the overloaded server at HUJI if at all possible. Netvision here too - but I see them as stratum 2. I sync to ntp.netvision.net.il (+ 2/3 times europe.pool.ntp.org for

Re: system clock loops

2005-07-20 Thread Tzafrir Cohen
Long ago, On Mon, Feb 21, 2005 at 12:48:01PM +0200, Tzafrir Cohen wrote: Hi I have a strange problem here: the system clock of my server keeps changing. The following is from the output of 'date' run from the same shell about 1 second apart: 12:13:37 13:25:08 12:13:34 As

Re: system clock loops

2005-07-20 Thread Geoffrey S. Mendelson
On Wed, Jul 20, 2005 at 11:58:36AM +0300, Tzafrir Cohen wrote: The following is from the output of 'date' run from the same shell about 1 second apart: 12:13:37 13:25:08 12:13:34 Check your crontabs carefully. Dead Rat included some obscure program to update your clock

Re: system clock loops (summary)

2005-02-22 Thread Tzafrir Cohen
I have not had time to reply earlier, partially due to network problems here. So here goes... On Mon, Feb 21, 2005 at 03:02:49PM +0200, Tzafrir Cohen wrote: On Mon, Feb 21, 2005 at 02:07:18PM +0200, Nadav Har'El wrote: On Mon, Feb 21, 2005, Tzafrir Cohen wrote about system clock loops

Re: system clock loops

2005-02-22 Thread Tzafrir Cohen
On Mon, Feb 21, 2005 at 03:27:09PM +0200, Gilad Ben-Yossef wrote: Tzafrir Cohen wrote: Hi I have a strange problem here: the system clock of my server keeps changing. The following is from the output of 'date' run from the same shell about 1 second apart: 12:13:37 13:25:08

system clock loops

2005-02-21 Thread Tzafrir Cohen
Hi I have a strange problem here: the system clock of my server keeps changing. The following is from the output of 'date' run from the same shell about 1 second apart: 12:13:37 13:25:08 12:13:34 As you can see, the clock occasionally loops back (it keeps in the range 12:13:34-38) and

Re: system clock loops

2005-02-21 Thread Yedidyah Bar-David
On Mon, Feb 21, 2005 at 12:48:01PM +0200, Tzafrir Cohen wrote: Hi I have a strange problem here: the system clock of my server keeps changing. The following is from the output of 'date' run from the same shell about 1 second apart: 12:13:37 13:25:08 12:13:34 As you can see,

Re: system clock loops

2005-02-21 Thread Tzafrir Cohen
On Mon, Feb 21, 2005 at 01:17:38PM +0200, Yedidyah Bar-David wrote: On Mon, Feb 21, 2005 at 12:48:01PM +0200, Tzafrir Cohen wrote: Hi I have a strange problem here: the system clock of my server keeps changing. The following is from the output of 'date' run from the same shell

Re: system clock loops

2005-02-21 Thread Nadav Har'El
On Mon, Feb 21, 2005, Tzafrir Cohen wrote about system clock loops: The following is from the output of 'date' run from the same shell about 1 second apart: 12:13:37 13:25:08 12:13:34 ... Obviously anything that assumes a steady system clock misbehaves. Any idea what else may

Re: system clock loops

2005-02-21 Thread Tzafrir Cohen
On Mon, Feb 21, 2005 at 02:07:18PM +0200, Nadav Har'El wrote: On Mon, Feb 21, 2005, Tzafrir Cohen wrote about system clock loops: The following is from the output of 'date' run from the same shell about 1 second apart: 12:13:37 13:25:08 12:13:34 ... Obviously anything

Re: system clock loops

2005-02-21 Thread Gilad Ben-Yossef
Tzafrir Cohen wrote: Hi I have a strange problem here: the system clock of my server keeps changing. The following is from the output of 'date' run from the same shell about 1 second apart: 12:13:37 13:25:08 12:13:34 As you can see, the clock occasionally loops back (it keeps in the range

Re: system clock loops

2005-02-21 Thread Danny Lieberman
Tzafrir, Gilad It sounds to me like a case of a very sick realtime clock - maybe the motherboard is sensitive to voltage fluctuations - i think the clock might be a vco Are you using ntpd? If not - I would try running ntpd and see if the problem goes away Danny Gilad Ben-Yossef wrote:

Re: system clock loops

2005-02-21 Thread Oron Peled
On Monday 21 February 2005 15:51, Danny Lieberman wrote: It sounds to me like a case of a very sick realtime clock - maybe the motherboard is sensitive to voltage fluctuations - i think the clock might be a vco The RTC has nothing to do with kernel time after boot. It is only used to

Re: system clock loops

2005-02-21 Thread Danny Lieberman
Oron Thanks - i just learned something. :-) This is Debian right? Would have thought it would be a widely reported issue. It smells like a combination of hardware and kernel related to APIC The P5 has a local APIC and an I/O APIC for interrupts on SMP - so I assume there is a kernel patch to

RE: system clock loops

2005-02-21 Thread Tzahi Fadida
:[EMAIL PROTECTED] On Behalf Of Oron Peled Sent: Monday, February 21, 2005 4:43 PM To: Danny Lieberman Cc: Gilad Ben-Yossef; Tzafrir Cohen; Linux-Israel list Subject: Re: system clock loops On Monday 21 February 2005 15:51, Danny Lieberman wrote: It sounds to me like a case of a very sick

Re: system clock loops

2005-02-21 Thread guy keren
On Mon, 21 Feb 2005, Tzafrir Cohen wrote: After many tinkerrings I rebotted the computer to see if it could make the problem go away. It has. For about an hour or so. please check that all your fans are working properly and there's no over-heating. it smells to me like a hardware problem