Slow scheduled service checks

[Tedman Eng]

Please let us know your performance metrics

Check execution times and check lantency (table in the top right).
Would also be helpful to see active check completion rate (table in the top
left)

These should help pinpoint where the slowdown is.


Also to optimize, if you have some checks that are long-intervalled (run
only once every day, etc), you should consider hand calculating the
inter-check-delay rather than using the 's' method.  Use the formula from
the documentation, but toss out any long-interval checks, since they'll
adversely skew the calculations.


-----Original Message-----
From: Jeff Engstrom [mailto:jeff.engstrom at fortix.net]
Sent: Monday, September 20, 2004 10:41 AM
To: nagios-users at lists.sourceforge.net
Subject: [Nagios-users] Slow scheduled service checks


Hello all,

I have a server monitoring some 1500 points and it seems for the most
part to run quite well. However, for one reason or another the "Last
Check" times are off when a service is down. That is not the only
problem actually... it appears that it can take some 15mins after the
service is restored for the update to reach the interface.

The main cfg is detailed below...

check_external_commands=1
command_check_interval=-1
log_rotation_method=d
use_syslog=1
log_notifications=1
log_service_retries=1
log_host_retries=1
log_event_handlers=1
log_initial_states=1
log_external_commands=1
log_passive_service_checks=1
inter_check_delay_method=s
service_interleave_factor=s
max_concurrent_checks=18
service_reaper_frequency=3
sleep_time=1
service_check_timeout=60
host_check_timeout=60
event_handler_timeout=30
notification_timeout=30
ocsp_timeout=5
perfdata_timeout=5
retain_state_information=1
retention_update_interval=60
use_retained_program_state=0
interval_length=60
use_agressive_host_checking=0
execute_service_checks=1
accept_passive_service_checks=1
enable_notifications=1
enable_event_handlers=1
process_performance_data=0
obsess_over_services=1
ocsp_command=submit_check_result
check_for_orphaned_services=1
check_service_freshness=1
freshness_check_interval=60
aggregate_status_updates=1
status_update_interval=15
enable_flap_detection=1
low_service_flap_threshold=5.0
high_service_flap_threshold=20.0
low_host_flap_threshold=5.0
high_host_flap_threshold=20.0

Thanks for any help on this!


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-------------------------------------------------------
This SF.Net email is sponsored by: YOU BE THE JUDGE. Be one of 170
Project Admins to receive an Apple iPod Mini FREE for your judgement on
who ports your project to Linux PPC the best. Sponsored by IBM.
Deadline: Sept. 24. Go here: http://sf.net/ppc_contest.php
_______________________________________________
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Nagios-users at lists.sourceforge.net
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::: Please include Nagios version, plugin version (-v) and OS when reporting any issue. 
::: Messages without supporting info will risk being sent to /dev/null