[ntp:questions] Re: Help needed with excessive drift

mlawdawg at yahoo.com mlawdawg at yahoo.com
Tue May 3 21:17:17 UTC 2005


Thanks for the replies. However, a different mips platform (mips cpu
but a different motherboard design) and my pentium pc hw both
eventually end up with a drift of -500.

Any hints on steps to take to analyze and correct the drift?

Here's ntpq output for the mips hw with -500 drift:

ntpq> pe
     remote           refid      st t when poll reach   delay   offset
jitter
==============================================================================
*17.254.0.27     17.72.133.54     2 u   98  256  377    7.813  -38.923
 8.322
+192.83.249.28   207.126.98.204   2 u  155  256  377    7.813  -30.373
 7.813
-216.52.237.151  209.81.9.7       2 u  168  256  377   79.947  -58.742
28.459
+69.13.233.192   204.123.2.5      2 u  163  256  377   19.930  -28.644
 7.813
+63.247.194.250  129.6.15.29      2 u  161  256  377   39.982  -36.006
 7.813
+192.168.x.yyy   131.216.1.101    3 u  157  256  377    7.813  -39.704
 7.813
ntpq> as
ind assID status  conf reach auth condition  last_event cnt
===========================================================
  1 30308  b634   yes   yes  none  sys.peer   reachable  3
  2 30309  b434   yes   yes  none  candidat   reachable  3
  3 30310  b334   yes   yes  none   outlyer   reachable  3
  4 30311  b434   yes   yes  none  candidat   reachable  3
  5 30312  b434   yes   yes  none  candidat   reachable  3
  6 30313  b434   yes   yes  none  candidat   reachable  3
ntpq> rv 30308
status=b634 reach, conf, sel_sys.peer, 3 events, event_reach,
srcadr=17.254.0.27, srcport=123, dstadr=192.168.x.yyy, dstport=123,
leap=00, stratum=2, precision=-18, rootdelay=163.986,
rootdispersion=63.812, refid=17.72.133.54, reach=377, unreach=0,
hmode=3, pmode=4, hpoll=8, ppoll=9, flash=00 ok, keyid=0, ttl=0,
offset=-38.923, delay=7.813, dispersion=15.301, jitter=8.322,
reftime=c6226715.b08b4395  Tue, May  3 2005 21:09:41.689,
org=c6226774.4192c8c5  Tue, May  3 2005 21:11:16.256,
rec=c6226774.4b8825f5  Tue, May  3 2005 21:11:16.295,
xmt=c6226774.4b8825f5  Tue, May  3 2005 21:11:16.295,
filtdelay=     7.81    7.81    7.81    7.81    7.81    7.81    7.81
7.81,
filtoffset=  -38.92  -33.16  -30.93  -28.41  -25.89  -23.55  -21.65
-21.57,
filtdisp=      9.74   17.45   21.30   25.17   29.01   32.88   34.80
36.74
ntpq> rv
status=06f4 leap_none, sync_ntp, 15 events, event_peer/strat_chg,
version="4.2.0", processor="mips", system="i686-pc-cygwin", leap=00,
stratum=3, precision=-7, rootdelay=171.799, rootdispersion=153.488,
peer=30308, refid=17.254.0.27,
reftime=c6226774.4b8825f5  Tue, May  3 2005 21:11:16.295, poll=8,
clock=c62267de.e521bda2  Tue, May  3 2005 21:13:02.895, state=4,
offset=-38.923, frequency=-500.000, jitter=26.241, stability=68.860




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