Slow scheduled service checks

[Jeff Engstrom]

Here is the servers performance metrics...

Time Frame		Checks Completed 
<= 1 minute:		35 (5.3%)
<= 5 minutes:		249 (37.5%)
<= 15 minutes:		664 (100.0%)
<= 1 hour:		664 (100.0%)
Since program start:	664 (100.0%)

Metric			Min.		Max.		Average
Check Execution Time:	< 1 sec		5 sec		0.396 sec 
Check Latency:		359 sec		476 sec		415.349 sec 
Percent State Change:	0.00%		17.04%		0.03%

I don't have any excessively long check intervals as you might notice
from the data above.  The check latency seems high to me but I don't
have a complete understanding of what the value represents.

Thanks again!
Jeff


On Mon, 2004-09-20 at 13:24, Tedman Eng wrote:
> 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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