srv:/etc/nagios# nagios -s nagios.cfg 

Nagios Core 3.2.1
Copyright (c) 2009-2010 Nagios Core Development Team and Community Contributors
Copyright (c) 1999-2009 Ethan Galstad
Last Modified: 03-09-2010
License: GPL

Website: http://www.nagios.org
Timing information on object configuration processing is listed
below.  You can use this information to see if precaching your
object configuration would be useful.

Object Config Source: Config files (uncached)

OBJECT CONFIG PROCESSING TIMES      (* = Potential for precache savings with -u option)
----------------------------------
Read:                 0.012247 sec
Resolve:              0.000209 sec  *
Recomb Contactgroups: 0.000048 sec  *
Recomb Hostgroups:    0.000195 sec  *
Dup Services:         0.002123 sec  *
Recomb Servicegroups: 0.000491 sec  *
Duplicate:            0.000470 sec  *
Inherit:              0.000350 sec  *
Recomb Contacts:      0.000001 sec  *
Sort:                 0.000000 sec  *
Register:             0.003395 sec
Free:                 0.000506 sec
                      ============
TOTAL:                0.020401 sec  * = 0.004253 sec (20.85%) estimated savings


RETENTION DATA TIMES
----------------------------------
Read and Process:     0.044998 sec
                      ============
TOTAL:                0.044998 sec


Timing information on configuration verification is listed below.

CONFIG VERIFICATION TIMES          (* = Potential for speedup with -x option)
----------------------------------
Object Relationships: 0.003004 sec
Circular Paths:       0.000016 sec  *
Misc:                 0.000510 sec
                      ============
TOTAL:                0.003530 sec  * = 0.000016 sec (0.5%) estimated savings


EVENT SCHEDULING TIMES
-------------------------------------
Get service info:        0.003135 sec
Get host info info:      0.000034 sec
Get service params:      0.000010 sec
Schedule service times:  0.003659 sec
Schedule service events: 0.000714 sec
Get host params:         0.000001 sec
Schedule host times:     0.000679 sec
Schedule host events:    0.000486 sec
                         ============
TOTAL:                   0.008718 sec


Projected scheduling information for host and service checks
is listed below.  This information assumes that you are going
to start running Nagios with your current config files.

HOST SCHEDULING INFORMATION
---------------------------
Total hosts:                     118
Total scheduled hosts:           117
Host inter-check delay method:   SMART
Average host check interval:     300.00 sec
Host inter-check delay:          2.56 sec
Max host check spread:           30 min
First scheduled check:           Fri Mar 12 16:21:38 2010
Last scheduled check:            Fri Mar 12 16:23:02 2010


SERVICE SCHEDULING INFORMATION
-------------------------------
Total services:                     483
Total scheduled services:           483
Service inter-check delay method:   SMART
Average service check interval:     421.12 sec
Inter-check delay:                  0.87 sec
Interleave factor method:           SMART
Average services per host:          4.09
Service interleave factor:          5
Max service check spread:           30 min
First scheduled check:              Fri Mar 12 16:23:02 2010
Last scheduled check:               Fri Mar 12 16:29:06 2010


CHECK PROCESSING INFORMATION
----------------------------
Check result reaper interval:       10 sec
Max concurrent service checks:      Unlimited


PERFORMANCE SUGGESTIONS
-----------------------
I have no suggestions - things look okay.