#7 IXP425: ntpdate corrects the time in the wrong direction

[Thomas Beckmann]

I'm using SnapGear-3.0.0 on IXDP425. For time-
synchronisation i use the ntpdate. The ntpdate shows a
strange behavior. If the time-difference gets about 0,5
sec every new call to the ntpdate doubles the time-
difference. I think the problem is, that the ntpdate
corrects the time-difference in the wrong direction. At
the point of 0,5 sec difference it should add -0,5 sec to
correct the time, but ntpdate subtracts 0,5 sec and we
get a time-difference of 1 sec. Does anybody get the
same problem? How can I fix it?
Thanks in advance.
Thomas

# ntpdate 192.168.105.104
15 Jan 06:17:56 ntpdate[44]: adjust time server
192.168.105.104 offset -0.22161c
# ntpdate 192.168.105.104
15 Jan 06:18:17 ntpdate[55]: adjust time server
192.168.105.104 offset -0.42484c
# ntpdate 192.168.105.104
15 Jan 06:18:26 ntpdate[59]: step time server
192.168.105.104 offset -0.505343 c
# ntpdate 192.168.105.104
15 Jan 06:18:29 ntpdate[60]: step time server
192.168.105.104 offset -1.030344 c
# ntpdate 192.168.105.104
15 Jan 06:18:32 ntpdate[61]: step time server
192.168.105.104 offset -2.070850 c
# ntpdate 192.168.105.104
15 Jan 06:18:37 ntpdate[62]: step time server
192.168.105.104 offset -4.149966 c
# ntpdate 192.168.105.104
15 Jan 06:18:46 ntpdate[63]: step time server
192.168.105.104 offset -8.308094 c
# ntpdate 192.168.105.104
15 Jan 06:19:04 ntpdate[64]: step time server
192.168.105.104 offset -16.624154c
# ntpdate 192.168.105.104
15 Jan 06:19:38 ntpdate[65]: step time server
192.168.105.104 offset -33.256166c