splnet() and time slowing

[Gleb Smirnoff]

   I have a relatively loaded router with permanent
load of ~ 200Kb/s. Its system time is a bit slowed down:

Jan  6 10:45:30 <ntp.notice> gw-f ntpd[274]: time reset 4.212716 s
Jan  6 11:00:52 <ntp.notice> gw-f ntpd[274]: time reset 3.682535 s
Jan  6 11:15:50 <ntp.notice> gw-f ntpd[274]: time reset 2.881445 s
Jan  6 11:32:42 <ntp.notice> gw-f ntpd[274]: time reset 3.130731 s
Jan  6 11:49:26 <ntp.notice> gw-f ntpd[274]: time reset 2.999978 s

It has some netgraph nodes with permanent traffic flow thru them.
When I insert another node (which is considered to cause even more
CPU load ), time I slowed down even more:

Jan  6 12:04:39 <ntp.notice> gw-f ntpd[274]: time reset 16.165271 s
Jan  6 12:20:20 <ntp.notice> gw-f ntpd[274]: time reset 27.880482 s
Jan  6 12:37:30 <ntp.notice> gw-f ntpd[274]: time reset 30.759668 s
Jan  6 12:53:19 <ntp.notice> gw-f ntpd[274]: time reset 27.591937 s

Does this mean that spending much time at splnet() causes 
system clock to slow? Or may be the problem hides somwhere else?

-- 
Totus tuus, Glebius.
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