Hello,
For testing purposes, we are monitoring 1750 services on 580 hosts. We
would like to check each service every 300 second, unfortunatly, nagios
report a service check latency of 150 to 250 seconds !
I noticed nagios launch roughly 200 checks and then idle for roughly a
minute. I checked that using a lame script :
while true; do ps -u nagios | wc -l; sleep 1; done;
Our inter_check_delay_method and inter_leave_factor_method are set to
smart :
SERVICE SCHEDULING INFORMATION
-------------------------------
Total services: 1750
Total scheduled services: 1750
Service inter-check delay method: SMART
Average service check interval: 300.00 sec
^^^
This is our aim -----------------------///
Inter-check delay: 0.17 sec
Interleave factor method: SMART
Average services per host: 3.01
Service interleave factor: 4
Max service check spread: 5 min
First scheduled check: Fri Oct 10 17:00:15 2008
Last scheduled check: Fri Oct 10 17:05:15 2008
The maximum concurrent service checks is set to 200 :
CHECK PROCESSING INFORMATION
----------------------------
Check result reaper interval: 10 sec
Max concurrent service checks: 200
And here is an overview of nagiostat output (we do not use passive
checks nor flapping detection).
Total Services: 1750
Services Checked: 1750
Services Scheduled: 1750
Services Actively Checked: 1750
Total Service State Change: 0.000 / 55.720 / 0.530 %
Active Service Latency: 146.819 / 214.765 / 177.500 sec
Active Service Execution Time: 0.083 / 12.984 / 1.074 sec
Active Service State Change: 0.000 / 55.720 / 0.530 %
Active Services Last 1/5/15/60 min: 92 / 1098 / 1750 / 1750
Services Ok/Warn/Unk/Crit: 1671 / 60 / 7 / 12
Active Service Checks Last 1/5/15 min: 176 / 1159 / 3432
Scheduled: 176 / 1159 / 3432
On-demand: 0 / 0 / 0
Cached: 0 / 0 / 0
I have not found how to make nagios to launch service checks more often
than every minutes. Does anyone have any idea ? :)
--
Antoine MUSSO
DISIT/PROD/QFO/OUT
mailto:[EMAIL PROTECTED]
tél. 02 40 12 73 62
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