nagios on solaris chewing CPU

[Barton, Murray M.]

Hi,
I am running Nagios v2.7 on Solaris 10 (installed from Blastwave) and it
is causing a lot of kernel activity such that the machine has few cycles
left for anything else. I know it is Nagios because if I stop Nagios
then the kernel activity reduces to normal.  Sample output from top is
below and attached is our main nagios config file. I don't know if this
is a bug or a configuration error or just a natural consequence of
monitoring ~ 300 hosts.  Any clues or suggestions would be appreciated.

Cheers
Murray

load averages:  6.61,  4.20,  3.86
11:12:18
119 processes: 88 sleeping, 10 running, 20 zombie, 1 on cpu
CPU states:  3.1% idle, 20.7% user, 76.2% kernel,  0.0% iowait,  0.0%
swap
Memory: 8192M real, 7175M free, 199M swap in use, 8367M swap free

   PID USERNAME THR PRI NICE  SIZE   RES STATE    TIME    CPU COMMAND
  7659 sarge      1  53    2   16M   15M sleep    0:11  8.98% perl
  2736 nagios     3  53    0   12M 7352K run      0:05  0.67% nagios
  8821 sarge      1  49    2 5320K 4008K run      0:00  0.52% ssh
  8594 root       1  59    0 1872K 1520K cpu/0    0:00  0.16% top:2.8
   118 daemon     6  59    0 5104K 3192K sleep  203:23  0.12% kcfd
     1 root       1  59    0 2392K 1392K run    172:23  0.09% init
 26137 root      27  59    0 9384K 8040K sleep    2:07  0.06% nscd
  8838 nagios     1  53    0   12M 3936K run      0:00  0.05% nagios
  8820 sarge      1  53    2 1264K 1128K sleep    0:00  0.04% sh
  8841 nagios     1  53    0 5000K 2336K sleep    0:00  0.03% check_ping
  8836 nagios     1  55    0 5000K 2336K sleep    0:00  0.03% check_ping
  8818 nagios     1  59    0 5008K 2344K sleep    0:00  0.03% check_ping
  8774 nagios     1  59    0 5008K 2344K sleep    0:00  0.03% check_ping
  8830 nagios     1  59    0 5000K 2336K sleep    0:00  0.03% check_ping
  8825 nagios     1  59    0 5000K 2336K run      0:00  0.02% check_ping
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