Ways and tweaks to make nagios more efficient. load average on monitoring host edging up.

[Marc Powell]

On Jan 27, 2009, at 5:20 PM, Rahul Nabar wrote:

> I set up my nagios system to monitor 256 odd nodes each with about 6  
> services (direct and NRPE). It is working fine but my load averages  
> have started edging upwards. Not critical yet but I wanted some tips  
> to make things more efficient and see if there are things I might  
> have done ineffeciently.

Just out of curiosity, what is the magnitude of the 'edging upwards'  
that you are seeing? Just about any hardware released in the past 5  
years or so should have no problems with that number of checks at all  
if they're 'normal' (base nagios-plugins) and run at a normal interval  
(5 min). Even older hardware could probably do it. What are they types  
of checks you are performing? How often? Are they perl checks and do  
you have the embedded perl interpreter (ePN) enabled? That last is a  
double-edged sword. While you can see improvements in the speed of  
perl plugin execution, if the plugins aren't written for the ePN, they  
can cause problems. There are also might be leaks with the ePN but I'm  
not sure if they're not related to the plugins themselves.

--
Marc


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