[ntp:questions] Apple Mac mini instabiliy

Dmitry Ivanov dimss at telecentrs.lv
Mon Jan 29 10:34:11 UTC 2007


OK, right after reporting this problem, I've started to collect  
loopstats on Mac mini. See graph attached.
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It takes ~36 hours to achieve relatively stable frequency value after  
reboot. I have seen values as low as 6.xx before started logging. My  
servers stablize much faster than Mac mini. Is this Mac hardware  
issue? I don't have other Intel Mac mini available and can't check it.

Now I see perfect polling interval of 1024 sec:

frukt:~ dimss$ ntpq -p -c rv
      remote           refid      st t when poll reach   delay    
offset  jitter
======================================================================== 
======
+twister.noc. 192.36.143.150   2 u   20 1024  377    7.590    0.073    
0.332
*thunder.noc. 192.36.143.151   2 u  996 1024  377    5.595   -1.172    
0.302
+www.solutions.l 193.190.230.65   2 u  994 1024  377   10.097    
-0.495   0.153
status=0664 leap_none, sync_ntp, 6 events, event_peer/strat_chg,
version="ntpd 4.2.0 at 1.1161-r Fri Jan 13 11:36:23 PST 2006 (1)",
processor="i386", system="Darwin/8.8.1", leap=00, stratum=3,
precision=-20, rootdelay=37.959, rootdispersion=70.441, peer=28293,
refid=10.100.10.111,
reftime=c96845a0.8e640cfd  Mon, Jan 29 2007 12:06:24.556, poll=10,
clock=c9684984.98d47b08  Mon, Jan 29 2007 12:23:00.596, state=4,
offset=-0.680, frequency=11.181, jitter=1.283, stability=0.049
frukt:~ dimss$


"Network Time" is Apple name for ntpd :)



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