[ntp:questions] Re: uk pool problem

M.C. van den Bovenkamp marco at linuxgoeroe.dhs.org
Mon Aug 28 20:19:49 UTC 2006


Eugen COCA wrote:

> http://www.pool.ntp.org/scores/84.92.75.21
> 
> We see that the server is good. If a server have a score lower than 5
> it will be removed from the pool.
> 
> There must be another problem - that server is a good one.

It wasn't about an hour ago. At least not when you threw ntpdate at it:

thor:~$ ntpdate -q blackhole.arlott.org.uk
server 84.92.75.21, stratum 15, offset -210105193.104270, delay 0.18675
28 Aug 20:33:12 ntpdate[11281]: step time server 84.92.75.21 offset 
-210105193.1

Doesn't exactly look good, does it?

At the moment it is a) again synced to its DCF clock (it was not at the 
time of that ntpdate, although it *was* synced to one of the remote 
servers):

thor:~$ ntpq -p blackhole.arlott.org.uk
      remote           refid      st t when poll reach   delay   offset 
  jitter
==============================================================================
*SHM(0)          .DCFa.           0 l   68   64  372    0.000   -2.845 
  0.550
  SHM(1)          .MSFa.           0 l  969   64    0    0.000    0.000 
4000.00
xntp0.nl.uu.net  .GPS.            1 u   22 1024  377  189.785   61.654 
54.753
-ntp1.nl.uu.net  .GPS.            1 u 1024 1024  375   60.115   -6.040 
  0.766
-tik.cesnet.cz   .GPS.            1 u   43 1024  377   75.240    0.739 
  1.891
-ntp1.sp.se      .PPS.            1 u   45 1024  377   79.036   -4.804 
  2.510
+ntp2.sp.se      .PPS.            1 u   11 1024  377   87.011   -2.588 
  4.270
-MSC-101.it.nuig .GPS.            1 u   16 1024  377   85.030    1.546 
11.791
+ntps1-0.cs.tu-b .PPS.            1 u 1016 1024  377   76.176   -3.653 
26.861
  batman.npl.co.u 139.143.49.13    2 u  926 1024  377   54.174   -3.554 
   8.751
  ntp2.npl.co.uk  78.84.80.0       2 u  888 1024  377   62.029    9.998 
   2.568


and b) it does it again:

thor:~$ ntpdate -q blackhole.arlott.org.uk
server 84.92.75.21, stratum 15, offset -210111428.429590, delay 0.09758
28 Aug 22:17:10 ntpdate[11984]: step time server 84.92.75.21 offset 
-210111428.429590 sec 


And 'thor' is my own stratum 1 NTP server (Motorola Oncore M12).

The boz is *not* OK.


		Regards,

			Marco.







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