[ntp:questions] ntpd server on Linux/Debian with SPARC Sun Blade 100

Olivier Bornet Olivier.Bornet at puck.ch
Thu Oct 19 10:12:18 UTC 2006


Hello all,

I'm back to my ntp server setup problem...

I have found a link to a problem with the Sun Blade 100 and it's clock:

   http://people.spacelabs.nl/~admar/usb100faq/76.html

Of course, this is talking about Solaris, and I use Linux... But maybe
the cause of the problem is the same: a problem with the Sun Blade 100
clock. In the log of ntp, I see many "time reset" (about every 15
minutes), like:

   Oct 19 06:40:19 puck ntpd[2779]: time reset +1.018025 s
   Oct 19 06:56:20 puck ntpd[2779]: time reset +0.873713 s
   Oct 19 07:12:29 puck ntpd[2779]: time reset +0.609030 s
   Oct 19 07:34:00 puck ntpd[2779]: time reset +1.072741 s
   Oct 19 07:50:06 puck ntpd[2779]: time reset +0.777131 s
   Oct 19 08:09:30 puck ntpd[2779]: time reset +0.877752 s
   Oct 19 08:27:47 puck ntpd[2779]: time reset +1.226723 s
   Oct 19 08:43:52 puck ntpd[2779]: time reset +0.692576 s
   Oct 19 08:58:50 puck ntpd[2779]: time reset +0.563637 s
   Oct 19 09:13:57 puck ntpd[2779]: time reset +0.733451 s
   Oct 19 09:31:08 puck ntpd[2779]: time reset +0.865823 s
   Oct 19 10:07:50 puck ntpd[17152]: time reset +1.950348 s
   Oct 19 10:26:08 puck ntpd[17152]: time reset +0.755067 s
   Oct 19 10:41:42 puck ntpd[17152]: time reset +0.827267 s
   Oct 19 10:52:18 puck ntpd[27745]: time reset +0.713711 s
   Oct 19 11:06:49 puck ntpd[27745]: time reset +0.704562 s
   Oct 19 11:22:07 puck ntpd[27745]: time reset +0.733117 s
   Oct 19 11:42:08 puck ntpd[27745]: time reset +0.992933 s

The ntpd server is staying in stratum 16.

Is there something I can do to have this Linux Sun Blade 100 running as
a ntp server correctly ? I already have try to compile and install the
last ntp stable version (4.2.2p4), and the problem stay the same.
Current kernel is stock 2.6.17.11 with linux vserver patch.

Thanks in advance for any help, and have a nice day.

        Olivier

PS: Just for reference, as my previous email is a little bit old...:
On Fri, Sep 01, 2006 at 05:26:16PM +0200,  wrote:
> I'm trying to setup a server on a Linux/Debian system. The hardware is a
> Sun Blade 100. It's running the stable distribution of Debian, but with
> a 2.6.16 kernel (and some few libs from testing).
> 
> The goal is to offer it in the pool.ntp.org as ntpd server.
> 
> So, I have choose 5 Swiss server to synchronize with (stratum 2). Here
> is the ntpq -p output:
> 
>        remote           refid      st t when poll reach   delay   offset  jitter
>   ==============================================================================
>   *audon.favey.ch  213.144.132.141  2 u    8   64  377   10.709  666.749 117.620
>   +cctld.tix.ch    130.149.17.21    2 u    8   64  377    5.283  662.468 111.763
>   -ns1.toponline.c 129.132.2.21     3 u   11   64  377   12.718  739.712 171.543
>   -tick.meteonews. 131.188.3.222    2 u   13   64  377    9.637  539.017 167.573
>   +sake.ifi.unizh. 131.188.3.220    2 u   16   64  377    5.463  659.900 111.388
> 
> The ntpdc -c peers give me:
> 
>        remote           local      st poll reach  delay   offset    disp
>   =======================================================================
>   =sake.ifi.unizh. 153.109.180.3    2   64  377 0.00546  0.659900 0.05933
>   =ns1.toponline.c 153.109.180.3    3   64  377 0.01271  0.739712 0.05917
>   *audon.favey.ch  153.109.180.3    2   64  377 0.01070  0.666749 0.05872
>   =tick.meteonews. 153.109.180.3    2   64  377 0.00926  0.852017 0.03731
>   =cctld.tix.ch    153.109.180.3    2   64  377 0.00528  0.662468 0.05414
> 
> What is strange is the the offset seems to me a little bit too high. I
> have compared this to my own Debian/x86 system. In this case, the offset
> is more close to 0.001 (almost 100 times smaller).
> 
> Has someone an idea why this is so bad ? Is the Debian/SPARC64 a problem ?
> Is the Blade 100 hardware the problem ? I don't really know where to
> search. I already have upgraded the kernel from a 2.4 to a 2.6.
> 
> ntp sersion is ntp-server 1:4.2.0a+stable-2sarge1 from Debian stable.

-- 
Olivier Bornet
Olivier.Bornet at puck.ch
Swiss Ice Hockey Results : http://puck.ch/
Get my PGP-key at http://puck.ch/pgp or at http://pgp.mit.edu/
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