identifying the slow check

[Josh Yost]

Michael W. Lucas wrote:
> Hi,
> 
> I've followed the advice for optimizing Nagios from the FAQ, and get
> the following performance stats.
> 
> Check Execution Time:  	0.01 sec	10.01 sec	0.248 sec
> Check Latency:		0.00 sec	2.31 sec	0.144 sec
> Percent State Change:	0.00%		6.25%		0.08%
> 
> Overall, the times are pretty good, but my maximum check time is
> pretty consistently about 10 seconds.
> 
> I'd like to identify which check(s) that is.  I'm sure it can either
> be optimized away or performed in some other manner.  Any suggestions?
> 

Hi,
	Is that host or service?  I'm guessing it's host and that you have the
host check set to 1 ping and the max_check_attempts set to 10 (I'm only
guessing because my host performance #s are almost exactly the same as
yours).

If so, there's nothing you can do about it (because it will happen
whenever a host is down), and I don't think of it as a problem, since
your avg. execution time and latency are well under 1 sec.

I would be more worried about the avg. service execution time & latency
(again, the execution time max will probably be whatever your Nagios
service_check_timeout value is set to, unless you have no problems on
your network).

Here's my current host check stats:

Check Execution Time:  	0.01 sec	10.02 sec	0.463 sec
Check Latency:	        0.00 sec	2.16 sec	0.011 sec
Percent State Change:	0.00%	        9.34%	        0.13%

current service stats:

Check Execution Time:  	0.02 sec	60.01 sec       0.214 sec
Check Latency:     	0.00 sec	0.37 sec        0.136 sec
Percent State Change:	0.00%	        38.29%	        0.14%

cheers,
 - Josh

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